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SEO Report for https://qq79.li

Your general SEO Checkup Score

SEO Score84/100
Average SEO score of top 100 sites: 75%This value indicates the average SEO score of the top 100 most visited websites in the US (in the past 12 months)
AI Visibility55/100
AI visibility score reflects brand reach in AI

Your site scored 84/100, comfortably above the 75 average for top sites. We found 6 issues to fix, and they're the gap between you and the very top. And an AI Visibility Score of 55/100 means ChatGPT, Gemini and Perplexity mention your brand only occasionally, which is ground your competitors are leaving open.

6 Failed
6 Warnings
51 Passed

Want to fix these issues and track your progress?

Issues to fix

HIGH
To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.
Details
MEDIUM
Serve properly sized images to reduce page loading times and to improve user's experience.
Details
MEDIUM
Add a Google Analytics script to this website to help in diagnosing potential SEO issues by monitoring site visitors and traffic sources.
Details
LOW
Without an SPF record, spammers can easily spoof emails from this domain, potentially leading to compromised email security and deliverability issues.
Details
LOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
Details
LOW
This website either lacks a favicon or it has not been referenced properly.
Details

AI Insights

Score:0
Failed:0
Warnings:0
Passed:5
Domain Business Context
Understanding the business context of a domain can help you create content that is more relevant to your target audience and differentiate your website from competitors.

What is this domain about

Online casino and betting information hub with game categories, promotions, and deposit/withdrawal guides

Industry Niche

Online Gambling Affiliate

Target Audience

Adult users interested in online gambling, bonuses, and account/payment instructions

This test will check the business context of the domain associated with the analyzed webpage. The business context includes the domain's description, target audience and industry niche (if applicable). Understanding the business context of a domain can help you create content that is more relevant to your target audience and differentiate your website from competitors.
LLM Visibility Checker
LLM Visibility Checker

Track your brand across ChatGPT, Gemini and Claude

Get an AI Presence Score, see which of your pages get cited, and follow how you compare with competitors over time.

How visible your brand is to AI engines
Content Strengths and Weaknesses

This webpage is highly structured and information-dense, covering game categories, promotions, onboarding steps, payments, support, and FAQs in a clear flow. Its main weakness is that much of the content is promotional and self-reported, with limited independent verification or licensing evidence.

Content Strengths

  • Clear Topic Coverage
  • Strong Section Structure
  • Actionable User Guidance

Content Weaknesses

  • Limited Independent Proof
  • Missing Licensing Details
  • Promotional Bias Dominates
This test will analyze the content of the webpage to identify its strengths and weaknesses. The analysis includes factors such as keyword usage, readability, originality, and relevance to the target audience. By understanding the strengths and weaknesses of your content, you can make informed decisions about how to improve it and better meet the needs of your audience.
Content Trust
43%
Topical Relevance92%
Subject Expertise58%
Credibility22%

This webpage is moderately relevant to its stated topic because most of the content focuses on the casino platform, promotions, payments, and support. Trust is weakened by the absence of visible licensing, limited third-party validation, and reliance on self-reported claims, even though the page does include policy links, an author page, contact/support references, and responsible-gambling notices.

This test will evaluate the trustworthiness of the content on the webpage. It assesses factors such as the credibility of sources, accuracy of information, and overall reliability. A high level of content trust can enhance your website's reputation and improve its ranking in search engine results.
Visual SEO Analysis
Visual SEO Analysis

Find out if your page design converts the visitors you earn

We score six things that decide whether a visitor stays and acts, from the first screen to the path to action, and rank every fix by effort and impact.

How your page's design and UX affect conversions
Content Freshness
91%

The page appears current, with explicit 2026 timestamps, an October 2026 update note, and a footer copyright for 2026. The content also references active promotions, current app availability, and time-sensitive event schedules, which strongly suggest recent maintenance.

Positive Signals

  • Explicit 2026 page timestamp
  • Updated 10/2026 notice
  • Current monthly event schedule
This test will check the freshness of the content on the webpage. It evaluates how recently the content was created or updated, and whether it remains relevant to current trends and user interests. Fresh content can attract more visitors and improve your website's ranking in search engine results.
Content Opportunities

The page already covers the basics of access, promotions, payments, and support, but it leaves several trust and depth gaps. The biggest opportunities are to add verifiable credibility signals, expand practical guidance, and turn promotional sections into more useful decision-support content.

Quick Wins

  • •Add a short license-and-regulation box near the top of the page with the issuing authority and license number if available.
  • •Turn the FAQ into a more detailed bonus-terms section with wagering examples and expiry dates for each promotion.
  • •Add a contact footer block with a support email, phone number, and physical address if the business has one.
This test will identify potential content opportunities for the webpage. It analyzes the current content landscape, identifies gaps in coverage, and suggests topics or keywords that could be targeted to attract more visitors and improve search engine rankings.

Common SEO issues

Score:74
Failed:3
Warnings:3
Passed:13
Meta Title Test
100% of top 100 sites passed
This webpage is using a title tag.
Text: QQ79 – Link Vào Nhà Cái QQ79 Chính Thức 2026
Length: 44 characters
The meta title is an HTML element that defines a page's title, displayed in search engine results, browser tabs, and bookmark lists. A concise, keyword-relevant title is a strong on-page ranking signal and a major driver of organic click-through rate. AI answer engines and LLM-driven search experiences also rely on the title to identify, summarize, and cite the page in generative results.
Meta Description Test
92% of top 100 sites passed
This webpage is using a meta description tag with a length of 147 characters. We recommend using well-written and inviting meta descriptions with a length between 150 and 220 characters (spaces included).
Text: QQ79: link vào chính thức 2026, 7 sảnh nổ hũ, bắn cá, casino, thể thao; cách đăng ký, nạp rút qua 7 kênh, tải app và khuyến mãi mới. Thông tin 18+.
Length: 147 characters
The meta description is an HTML tag that provides a short summary of a page's content, often shown beneath the title in search results. While not a direct ranking factor, an accurate and inviting description significantly improves click-through rate from organic listings. AI answer engines and social platforms also use it as a trusted summary when generating previews, citations and shareable snippets.
Google Search Results Preview Test
Desktop version
https://qq79.li/QQ79 – Link Vào Nhà Cái QQ79 Chính Thức 2026QQ79: link vào chính thức 2026, 7 sảnh nổ hũ, bắn cá, casino, thể thao; cách đăng ký, nạp rút qua 7 kênh, tải app và khuyến mãi mới. Thông tin 18+.
Mobile version
https://qq79.li/QQ79 – Link Vào Nhà Cái QQ79 Chính Thức 2026QQ79: link vào chính thức 2026, 7 sảnh nổ hũ, bắn cá, casino, thể thao; cách đăng ký, nạp rút qua 7 kênh, tải app và khuyến mãi mới. Thông tin 18+.
A simulated preview of how the page may appear in Google search results, combining the title, URL, and meta description as Google typically renders them. Useful for spotting truncated text, weak phrasing, or missing elements before publishing, since the snippet directly influences whether searchers click through.
Social Media Meta Tags Test
89% of top 100 sites passed
This webpage is using social media meta tags.
Open Graph Meta Tags
og:titleQQ79 – Link Vào Nhà Cái QQ79 Chính Thức 2026
og:descriptionQQ79: link vào chính thức 2026, 7 sảnh nổ hũ, bắn cá, casino, thể thao; cách đăng ký, nạp rút qua 7 kênh, tải app và khuyến mãi mới. Thông tin 18+.
og:typewebsite
og:urlhttps://qq79.li
og:imagehttps://qq79.li/uploads/2026/10/qq79-social-cover.jpg
Twitter Card Meta Tags
twitter:cardsummary_large_image
twitter:titleQQ79 – Link Vào Nhà Cái QQ79 Chính Thức 2026
twitter:descriptionQQ79: link vào chính thức 2026, 7 sảnh nổ hũ, bắn cá, casino, thể thao; cách đăng ký, nạp rút qua 7 kênh, tải app và khuyến mãi mới. Thông tin 18+.
twitter:imagehttps://qq79.li/uploads/2026/10/qq79-social-cover.jpg
Open Graph and Twitter Card meta tags tell social platforms and link unfurlers how to display a page when its URL is shared. Well-formed tags produce richer previews with the intended title, description, and image, which improves click-through on social channels. They also serve as a structured signal that AI crawlers and answer engines can use when summarizing the page.
Most Common Keywords Test
There is likely no optimal keyword density (search engine algorithms have evolved beyond keyword density metrics as a significant ranking factor). It can be useful, however, to note which keywords appear most often on your page and if they reflect the intended topic of your page. More importantly, the keywords on your page should appear within natural sounding and grammatically correct copy.
28trang
25chính
24sảnh
21đăng
21khoản
A frequency analysis of the most repeated words and phrases in the page's visible content. Useful for getting a quick sense of which topics search engines are likely to associate with the page, and for spotting cases where the actual content drifts from the intended subject.
Keywords Usage Test
48% of top 100 sites passed
The most common keywords of this webpage are distributed well across the important HTML tags. This helps search engines to properly identify the topic of this webpage.
Keyword
Title tag
Meta description
Headings
trang
chính
sảnh
đăng
khoản
Cross-checks whether the most frequently used keywords on the page also appear in the title and meta description. Alignment between body content and metadata helps search engines confirm the page's topic and reinforces relevance for those terms.
Keywords Cloud Test
android
bước
casino
châu
chính
chơi
chương
cung
cách
công
cược
cảnh
danh
dung
dành
dùng
dưới
dụng
game
gaming
gian
giải
giấy
giới
hiển
hoặc
hàng
hướng
jili
khoản
khoảng
khuyến
khác
không
khẩu
kiện
kênh
link
liên
lệnh
lịch
miền
miễn
momo
nguồn
ngày
ngân
người
nhiều
nhiệm
nhận
nhập
pháp
phép
phút
sinh
sách
sảnh
sống
telegram
thanh
thao
theo
thiểu
thiệu
tháng
thông
thường
thưởng
thấy
thật
thời
thức
tiếng
tiếp
tiết
tiền
toán
trang
trong
truy
trách
trên
trình
trước
trực
tuyến
tuổi
tặng
tổng
usdt
viên
việt
vòng
website
điều
điện
đúng
đăng
được
A visual word cloud of the page's content, with more frequent terms shown in larger text. Provides a quick at-a-glance view of which words dominate the page, helping confirm that the visible content reflects the intended topic.
Related Keywords Test
Related Keywords

See which keywords rank your URL in Google’s top 20

Get key keyword metrics like average position, search volume, CPC, and more.

A list of search queries for which the page already appears in the top organic results. Highlights the topical territory the page is winning in search and can surface unexpected terms that present new content or optimization opportunities.
Competitor Domains Test
Competitor Domains

Understand your competitors' SEO and backlink profile

Get related competitors and their domain authority score in relation to your domain.

Identifies up to ten domains that compete for similar organic search results, ranked by overall domain authority based on the volume and quality of their backlink profiles. Useful for benchmarking the competitive landscape and prioritizing which sites to study for content and link-building strategy.
Heading Tags Test
62% of top 100 sites passed
This webpage contains too many H2 tags! H2 tags should re-inforce the related content of your page to search engines - too many tags may make the topic less clear, or look like spam tactics. Consider using less than 10 H2 tags.
H1 tags
QQ79 – Link truy cập nhà cái QQ79 chính thức 2026
H2 tags
Banner khuyến mãi
Giao dịch
Lịch sự kiện
QQ79 là gì?
Sảnh trò chơi tại QQ79
Trò chơi nổi bật tại QQ79
Khuyến mãi QQ79 nổi bật
Bắt đầu với QQ79 trong 5 bước
Cách đăng ký và đăng nhập QQ79
Nạp rút tiền QQ79: 7 kênh thanh toán
Link QQ79
Link dự phòng
Tải app QQ79
Cài app QQ79 trên Android và iOS
Hỗ trợ khách hàng QQ79
Nhà cung cấp game tại QQ79
Câu hỏi thường gặp về QQ79
Tổng kết: có nên chơi tại QQ79?
Nội dung
Sảnh
Phương thức thanh toán
Không khả dụng
Inspects the page for H1 and H2 heading tags and reports their structure. Headings give both users and search engines a clear outline of the page's topics, with the H1 acting as the primary subject and H2s framing major sections. A clean heading hierarchy also helps AI answer engines segment the content into discrete passages they can quote or summarize.
Robots.txt Test
99% of top 100 sites passed
This website is using a robots.txt file.
https://qq79.li/robots.txt
Verifies whether the site exposes a robots.txt file at the root domain. This file is the first resource most crawlers request, telling search engines and other bots which paths they may or may not access. It is also the standard mechanism for allowing or blocking modern AI crawlers used by training pipelines and answer engines.
Sitemap Test
83% of top 100 sites passed
This website has a sitemap file.
https://qq79.li/sitemap.xml
Looks for an XML sitemap on the site and reports whether one is published. Sitemaps give search engines an explicit, machine-readable list of the URLs you want crawled, along with metadata such as last-modified dates, which speeds up discovery of new and updated pages. They are especially useful for large sites or those with weak internal linking.
Image Alt Test
78% of top 100 sites passed
This webpage is using "img" tags with empty or missing "alt" attribute!

Image Alt Test

How to pass this test?

Alt attributes provide a text alternative for images, used by screen readers when a user cannot see the image and by search engines and multimodal AI models to understand what the image depicts. Fixing this issue means writing concise, descriptive alt text for every meaningful image on the page, and using empty alt for purely decorative images so assistive technology can skip them. The same alt text helps multimodal LLMs and image search tools surface and cite your visuals.

Example

<img src="/images/marathon-shoes.jpg"
     alt="Side view of a lightweight neon-green marathon running shoe">

<img src="/images/divider.svg" alt="">

Where to make the change

  • Raw HTML: add the alt attribute to every <img> tag. For decorative images, use alt="" so screen readers skip them.
  • WordPress: the media library has an Alt text field on every uploaded image. Fill it once and the value is reused everywhere the image is inserted.
  • Shopify: in the product or page editor, click an image and use the Edit alt text option. Theme code that renders product images should pull image.alt.
  • Wix or Squarespace: click the image in the editor and use the Alt text or Image description field in the side panel.
  • Headless or framework sites: require an alt prop on every image component and lint for missing values during build.

Common causes and how to resolve them

  • Attribute missing: add alt="" at minimum so the page validates. Replace with descriptive text on any image that conveys information.
  • Alt text is the filename: "IMG_4837.jpg" tells the user nothing. Replace with a description of what is in the image.
  • Alt text duplicates the visible caption: screen readers will read both, doubling the user's listening time. Differentiate the alt from the caption or empty the alt.
  • Decorative images get descriptive alt text: background patterns and dividers should use alt="", otherwise screen readers narrate noise.
  • Bulk imports left alt blank: a one-off audit of the media library or a CMS-side script can fill missing alt values from product names, captions, or asset descriptions.

Best practices

  • Describe the function, not just the appearance: for a chart, describe what the chart shows. For a button image, describe what the button does.
  • Keep it concise: aim for under 125 characters. Screen readers do not pause mid-sentence, so long alt text is exhausting to listen to.
  • Skip "image of" or "picture of": the screen reader already announces it as an image.
  • Include the focus keyword when natural: alt text is a minor on-page signal, but stuffing keywords in unnatural alt text harms both accessibility and ranking.
Inspects whether images on the page include descriptive alt attributes. Alt text provides accessibility for screen readers, a fallback when images fail to load, and a textual signal that helps search engines understand image content. It also improves how AI crawlers and image search tools interpret and surface the visuals.
Responsive Image Test
29% of top 100 sites passed
Not all images in this webpage are properly sized! This webpage is serving images that are larger than needed for the size of the user's viewport.

Responsive Image Test

How to pass this test?

This test fails when one or more images on the page are served at dimensions significantly larger than the size at which the browser actually renders them. Fixing this issue means resizing the source files (or serving responsive variants) so the bytes downloaded match the pixels actually displayed. The result is faster page loads, lower data usage, and better Core Web Vitals scores.

Example

<img
  src="/images/hero-800.jpg"
  srcset="/images/hero-400.jpg 400w,
          /images/hero-800.jpg 800w,
          /images/hero-1600.jpg 1600w"
  sizes="(max-width: 640px) 100vw, 800px"
  alt="Marathon runners at sunrise"
  width="800" height="450">

Where to make the change

  • Raw HTML: use srcset and sizes to let the browser pick the right variant for the user's viewport. Always include intrinsic width and height attributes.
  • WordPress: WordPress generates multiple image sizes automatically. Use the the_post_thumbnail() helper or the block editor's image block, both of which emit responsive srcset markup.
  • Shopify: use the image_url Liquid filter with size parameters (for example {{ image | image_url: width: 800 }}) and pair with image_tag to emit a responsive image.
  • Wix or Squarespace: both platforms generate responsive variants automatically; this issue is typically caused by uploading a deliberately oversized image.
  • Headless or framework sites: use the framework's image component (for example next/image or astro:assets), which generates responsive variants and lazy-loads off-screen images.

Common causes and how to resolve them

  • Original camera or stock-photo file uploaded as-is: a 6000-pixel-wide JPEG rendered in a 400-pixel column wastes most of the bytes. Resize the source or generate responsive variants.
  • No srcset: the browser has no choice but to use the single source. Add multiple variants so mobile users get smaller files.
  • Hero images sized for ultra-wide displays: if your largest layout is 1600 pixels, do not ship a 4000-pixel original.
  • Background images set in CSS without responsive sources: use the image-set() CSS function or media queries to swap in different image files at different breakpoints.

Best practices

  • Generate variants at common widths: 400, 800, 1200, and 1600 pixels covers most viewports cleanly.
  • Always set width and height: intrinsic dimensions let the browser reserve space and avoid layout shift, helping CLS.
  • Lazy-load off-screen images: add loading="lazy" to images below the fold so the browser only downloads them when needed.
  • Pair with modern formats: resizing alone is good; resizing and serving WebP or AVIF compounds the savings.
Compares the natural dimensions of each image to the size at which it is actually rendered in the user's viewport. Serving images significantly larger than needed wastes bandwidth, slows page load, and forces the browser to scale assets unnecessarily, all of which hurt performance and user experience.
Image Aspect Ratio Test
75% of top 100 sites passed
All image display dimensions match the natural aspect ratio.
Compares each image's natural aspect ratio against the ratio at which it is displayed on the page. Significant mismatches result in stretched or squashed visuals that look unprofessional and degrade the user experience.
Deprecated HTML Tags Test
94% of top 100 sites passed
This webpage does not use HTML deprecated tags.
Scans the markup for HTML elements that are no longer part of the modern HTML specification. Deprecated tags may still render today, but browsers can drop support at any time, leading to broken layouts and rendering inconsistencies. Replacing them with current standards keeps the page resilient and easier to maintain.
Google Analytics Test
72% of top 100 sites passed
A Google Analytics script is not detected on this page. While there are several tools available to monitor your site's visitors and traffic sources, Google Analytics is a free, commonly recommended program to help diagnose potential SEO issues.

Google Analytics Test

How to pass this test?

Google Analytics 4 is a free measurement platform that records visitor behavior, traffic sources, and conversion data. Installing it does not directly affect rankings, but the data it produces is essential for measuring SEO performance, identifying high-value pages, and prioritizing future optimization work. Fixing this issue means installing the GA4 tag site-wide and confirming events appear in your reports.

Example

<!-- Place inside <head> on every page -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-XXXXXXXXXX"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  gtag('config', 'G-XXXXXXXXXX');
</script>

Where to make the change

  • Raw HTML: paste the GA4 snippet into the <head> of every page. A shared layout file is the cleanest place.
  • WordPress: use a site-kit or analytics plugin, or paste the snippet into your theme's header file. Avoid duplicating the tag across multiple plugins.
  • Shopify: add the GA4 measurement ID under Online Store, Preferences, Google Analytics, or install the official Google channel app.
  • Wix or Squarespace: both platforms offer a GA4 measurement ID field in their analytics settings panel.
  • Headless or framework sites: install via Google Tag Manager or use the framework's analytics integration so the tag fires on every route change.

Common causes and how to resolve them

  • Tag not installed at all: install GA4 using the snippet above or the platform-specific path.
  • Universal Analytics tag still in place: Universal Analytics stopped processing data on July 1, 2024. Replace any UA tag (UA-...) with a GA4 measurement ID (G-...).
  • Tag fires only on the homepage: ensure the snippet is in a shared template loaded by every page, not pasted into one post.
  • Cookie banner blocks the tag before consent: integrate Consent Mode v2 so GA4 receives anonymized signals before consent and full data after.
  • Tag duplicated: two snippets on the same page double-count sessions. Audit with the Tag Assistant browser extension and remove duplicates.

Best practices

  • Verify with real-time reports: after installing, open GA4's Realtime view and load the site to confirm events arrive.
  • Use Google Tag Manager: for any site beyond the simplest, GTM gives you a single place to manage analytics, conversion tags, and third-party scripts without code changes.
  • Configure key events: mark conversions (purchase, lead, signup) as key events so reports highlight what matters for SEO ROI.
  • Link to Search Console: connecting GA4 to Search Console surfaces organic queries alongside on-site behavior in the same reports.
Detects whether the page is instrumented with Google Analytics tracking code. Analytics is not an SEO ranking factor, but having reliable traffic and behavior data is essential for measuring the impact of SEO work and identifying opportunities for improvement.
Favicon Test
100% of top 100 sites passed
This website either doesn't have a favicon or this has not been referenced correctly!

Favicon Test

How to pass this test?

A favicon is the small icon associated with the site, shown in browser tabs, bookmarks, history listings, and increasingly in search engine results. Fixing this issue means publishing a favicon at the conventional location and declaring it in the page <head> so browsers and search engines can find and display it.

Example

<head>
  <link rel="icon" href="/favicon.ico" sizes="any">
  <link rel="icon" href="/favicon.svg" type="image/svg+xml">
  <link rel="apple-touch-icon" href="/apple-touch-icon.png">
</head>

Where to make the change

  • Raw HTML: upload favicon.ico to the site root and add the <link rel="icon"> tags in the <head>.
  • WordPress: upload the icon under Appearance, Customize, Site Identity, Site Icon. WordPress will emit the correct link tags.
  • Shopify: upload the icon under Online Store, Themes, Customize, Theme settings, Favicon.
  • Wix or Squarespace: both expose a favicon upload field in the site or design settings.
  • Headless or framework sites: place the favicon files in the public or static directory so they ship at the root paths.

Common causes and how to resolve them

  • No favicon at the root: add at least /favicon.ico. Most browsers fall back to fetching this path even when no link tag is present.
  • Wrong MIME type: if the favicon is served as text/html instead of image/x-icon or image/svg+xml, browsers will not render it. Check the response in the network tab.
  • Cached old icon after replacement: browsers cache favicons aggressively. Append a query string (?v=2) to bust the cache.
  • Missing high-resolution variants: modern devices need 180 x 180 (Apple), 192 x 192 (Android), and 512 x 512 (PWA) sizes for crisp rendering.

Best practices

  • Provide an SVG version: SVG favicons scale crisply at any size and support light or dark scheme variants.
  • Include an Apple touch icon: a 180 x 180 PNG named apple-touch-icon.png at the root makes the site look correct when added to an iOS home screen.
  • Use a consistent visual identity: the favicon should match the brand mark so users recognize the site at a glance in tabs and bookmarks.
  • Test in both light and dark mode: some browsers render the tab background differently. Make sure the icon stays legible in both.
Verifies whether the site declares a favicon and that it loads correctly. Favicons appear in browser tabs, bookmarks, and increasingly in search engine result pages, where they reinforce brand recognition and make a listing easier to spot at a glance.
Backlinks Test
Backlinks

Get a full and detailed list of your backlinks

See every website linking to yours, along with detailed backlink data.

Surfaces the external pages that link to the analyzed URL. Backlinks from authoritative, topically relevant sites remain one of the strongest off-page ranking signals, while a profile dominated by low-quality or spammy links can attract algorithmic penalties. Reviewing the inbound link mix helps identify both link-building wins and toxic links worth disavowing.
JS Error Test
83% of top 100 sites passed
There are no severe JavaScript errors on this webpage.
Inspects the page for JavaScript runtime errors that occur as it loads. Unhandled errors can break interactive features, leave content unrendered, and signal poor code quality, all of which hurt the user experience that search engines factor into rankings.
Console Errors Test
27% of top 100 sites passed
This webpage doesn't have any warnings or errors caught by the Chrome DevTools Console.
Reviews the browser console for warnings and errors emitted while the page loads. Console messages often expose underlying issues such as failed network requests, deprecated APIs, or security warnings that can quietly degrade the experience even when the page appears to work.
Charset Declaration Test
96% of top 100 sites passed
This webpage has a character encoding declaration.
Content-Type: text/html; charset=utf-8
Checks whether the page declares a character encoding such as UTF-8. Without an explicit charset declaration, browsers must guess the encoding, which can lead to garbled symbols, broken accented characters, and inconsistent rendering across devices. UTF-8 is the modern standard recommended by Google.

Speed optimizations

Score:85
Failed:2
Warnings:2
Passed:16
HTML Page Size Test
23% of top 100 sites passed
The size of this webpage's HTML is 15.16 Kb and is under the average webpage's HTML size of 33 Kb. Faster loading websites result in a better user experience, higher conversion rates, and generally better search engine rankings.
Measures the size of the raw HTML document, excluding images and external CSS or JavaScript. Bloated HTML increases time to first byte and parsing time, slowing down rendering on mobile networks and lower-powered devices. Trimming inline styles, redundant markup, and oversized inline data keeps initial load fast.
DOM Size Test
56% of top 100 sites passed
The Document Object Model (DOM) of this webpage has 715 nodes which is less than the recommended value of 1,500 nodes.
Measures the size and depth of the page's Document Object Model, the tree of nodes the browser builds from the HTML. Very large DOMs increase memory usage, lengthen style and layout calculations, and slow down rendering, particularly on mobile devices. Keeping the DOM lean improves both load time and runtime responsiveness.
HTML Compression/GZIP Test
99% of top 100 sites passed
This webpage is successfully compressed using zstd compression on your code. The HTML code is compressed from 78.75 Kb to 15.16 Kb (81% size savings). This helps ensure a faster loading webpage and improved user experience.
Verifies whether the server delivers the HTML using a compression algorithm such as Gzip or Brotli. Compressed responses dramatically reduce transfer size with negligible decompression cost, translating directly into faster page loads, especially on slower connections.
Site Loading Speed Test
71% of top 100 sites passed
The loading time of this webpage (measured from N. Virginia, US) is around 1.93 seconds and this is under the average loading speed which is 5 seconds.
Related Keywords

Accurate historical loading speed monitor and reports

Get detailed and accurate loading speed reports for your websites and see how your pages are being loaded over time.

Measures the overall time required to load the page in the browser. Page speed is a confirmed Google ranking factor and a strong driver of bounce rate, with slower pages losing a meaningful share of users before they even see the content. Faster pages also tend to convert better, making this a key metric for both SEO and revenue.
JS Execution Time Test
53% of top 100 sites passed
The JavaScript code used by this webpage is executed in less than 2 seconds.
Reports the total time the browser spends parsing, compiling, and executing JavaScript while the page loads. Heavy JavaScript work blocks the main thread and is the primary cause of poor Interaction to Next Paint, the Core Web Vital that replaced First Input Delay in 2024 and that Google uses as part of its ranking algorithms. Reducing bundle size and deferring non-critical scripts directly improves perceived performance.
Page Objects Test
7% of top 100 sites passed
This webpage is using more than 20 http requests, which can slow down page loading and negatively impact user experience!
Content size by content type
Content type
Percent
Size
image
94.5 %
1.19 Mb
css
2.5 %
32.54 Kb
javascript
1.6 %
20.67 Kb
html
1.3 %
16.91 Kb
other
0.0 %
431 B
font
0.0 %
0 B
TOTAL
100%
1.26 Mb
Requests by content type
Content type
Percent
Requests
image
64.1 %
25
css
20.5 %
8
javascript
10.3 %
4
html
2.6 %
1
other
2.6 %
1
font
0.0 %
0
TOTAL
100%
39
Content size by domain
Domain
Percent
Size
qq79.li
99.2 %
1.25 Mb
static.cloudflareinsights.com
0.8 %
10.23 Kb
TOTAL
100%
1.26 Mb
Requests by domain
Domain
Percent
Requests
qq79.li
97.4 %
38
static.cloudflareinsights.com
2.6 %
1
TOTAL
100%
39
Verifies that every resource the page requests, including images, scripts, stylesheets, and fonts, can be successfully retrieved. Broken or unreachable assets can leave the page rendered incorrectly, trigger console errors, and damage both user experience and how search engines perceive page quality.
CDN Usage Test
95% of top 100 sites passed
This webpage is serving all images, javascript and css resources from CDNs.
Detects whether static assets such as images, JavaScript, and CSS are delivered through a Content Delivery Network. CDNs serve files from edge locations close to the user, reducing latency, improving cache hit rates, and offloading traffic from the origin server. The result is faster, more consistent page performance worldwide.
Modern Image Format Test
43% of top 100 sites passed
This webpage is using images in a modern format.
Identifies images served in legacy formats such as JPEG and PNG instead of modern alternatives like WebP or AVIF. Modern formats compress significantly better at equivalent visual quality, which means smaller transfers, faster page loads, and lower data usage for visitors on metered connections.
Image Metadata Test
72% of top 100 sites passed
This webpage is not using images with large metadata.
Flags images carrying disproportionately large embedded metadata such as EXIF data, thumbnails, color profiles, geolocation, and camera information. This metadata is rarely useful on the web and adds bytes to every request without any rendering benefit, making it an easy win for shrinking image payloads.
Image Caching Test
95% of top 100 sites passed
This website is using cache headers for images and the browsers will display these images from the cache.
Inspects whether image responses include caching headers that allow browsers to store them for repeat visits. With proper caching directives, returning visitors retrieve images from the local cache instead of refetching them, producing noticeably faster subsequent page loads.
JavaScript Caching Test
96% of top 100 sites passed
This webpage is using cache headers for all JavaScript resources.
Inspects whether external JavaScript files are served with caching headers that allow browsers to store and reuse them. Cached scripts skip the network on repeat visits, reducing load time and bandwidth for returning users without sacrificing the ability to push fresh code by versioning file URLs.
CSS Caching Test
98% of top 100 sites passed
This webpage is using cache headers for all CSS resources.
Inspects whether external CSS files are served with caching headers that allow browsers to store and reuse them. Cached stylesheets skip the network on repeat visits, reducing load time for returning users while still allowing updates through versioned filenames.
JavaScript Minification Test
98% of top 100 sites passed
All JavaScript files used by this webpage are minified.
Detects whether external JavaScript files are minified by stripping whitespace, comments, and shortening identifiers. Minified scripts are substantially smaller and faster to download and parse, which lowers page load time and improves Core Web Vitals scores.
CSS Minification Test
100% of top 100 sites passed
All CSS resources used by this webpage are minified.
Detects whether external CSS files are minified by removing whitespace, comments, and unused characters. Minification reduces stylesheet size with no functional change, leading to faster downloads and quicker first render.
Render Blocking Resources Test
15% of top 100 sites passed
This webpage is using render blocking resources! Eliminating render-blocking resources can help this webpage to load significantly faster and will improve the website experience for your visitors.

Render Blocking Resources Test

How to pass this test?

This test fails when JavaScript or CSS resources block the browser from rendering visible content. Each render-blocking file delays the first paint, and on slower networks the cumulative impact can be severe. Fixing this issue means inlining the truly critical CSS, deferring or asynchronously loading non-essential scripts, and removing unused code.

Example

<head>
  <!-- Inline only above-the-fold critical CSS -->
  <style>/* critical styles here */</style>

  <!-- Load full stylesheet asynchronously -->
  <link rel="preload" href="/styles/main.css" as="style"
        onload="this.onload=null;this.rel='stylesheet'">

  <!-- Defer non-critical scripts -->
  <script src="/scripts/app.js" defer></script>
</head>

Where to make the change

  • Application code or templates: identify the CSS and JavaScript needed for the initial render and load only those synchronously. Defer the rest.
  • Build pipeline: use a critical CSS extractor (such as critical or penthouse) to generate the above-the-fold styles automatically.
  • WordPress: performance plugins offer "delay JS execution" and "load CSS asynchronously" options that handle most of this without code changes.
  • Headless or framework sites: use the framework's preload and code-splitting hints to control what blocks rendering.

Common causes and how to resolve them

  • Single large stylesheet blocking render: inline critical CSS for the first viewport, load the full stylesheet asynchronously.
  • Synchronous third-party scripts in the head: add defer or async, or move them to the end of the body.
  • Web fonts blocking text rendering: add font-display: swap in @font-face rules so the fallback font shows immediately.
  • Render-blocking @import in CSS: replace with separate <link rel="stylesheet"> tags so the browser can fetch them in parallel.

Best practices

  • Use defer for scripts that need the DOM: they execute after parsing but before DOMContentLoaded.
  • Use async for fully independent scripts: they execute as soon as they download, in any order.
  • Preload the critical request chain: tell the browser early about fonts and key assets with <link rel="preload">.
  • Audit with Lighthouse: the Render-blocking resources audit lists every offending file with the estimated time saved by deferring it.
Identifies JavaScript and CSS resources that the browser must download and process before it can render visible content. Each render-blocking file delays the first paint, and on slower networks the cumulative impact can be severe. Inlining critical styles, deferring non-essential scripts, and removing unused code all help unblock the rendering path.
URL Redirects Test
97% of top 100 sites passed
This URL doesn't have any redirects (which could potentially cause site indexation issues and site loading delays).
Counts the number of HTTP redirects required for the URL to resolve to its final destination. Each hop adds latency and can dilute link equity, while long redirect chains sometimes confuse crawlers and indexing pipelines. Keeping redirects short and direct is a Google recommendation for both performance and SEO.
Time To First Byte Test
99% of top 100 sites passed
The Time To First Byte value of this webpage is 0.911 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.
0.911 s
0.8 s
1.8 s

Time To First Byte Test

How to pass this test?

Time to First Byte (TTFB) measures the delay between the browser requesting the page and the first byte of the response arriving. TTFB reflects backend, network, and CDN performance and effectively sets the floor for every other loading metric, since rendering cannot begin until bytes start flowing. Fixing this issue usually means improving server response time, adding edge caching, or reducing redirect chains.

Where to make the change

  • Server and hosting: upgrade to a faster host plan, move to a region closer to your users, and enable HTTP/2 or HTTP/3.
  • CDN: putting the site behind a CDN dramatically reduces TTFB for users far from the origin server. Cache HTML responses at the edge whenever possible.
  • Application code: profile slow endpoints, cache expensive database queries and external API calls, and use streaming or partial responses.

Common causes and how to resolve them

  • Slow server processing: profile the slowest controllers or routes. Database queries, N+1 loops, and synchronous third-party API calls are typical culprits.
  • No edge caching: caching HTML at the CDN reduces TTFB to a single edge round trip. Use rules to bypass cache for logged-in users.
  • Long redirect chains: each hop adds latency before bytes flow. Collapse chains so the URL the user requests resolves to its final destination in one step.
  • Origin in a distant region: a US-only origin makes Asian users wait. Add edge regions or move the origin closer to the audience.
  • HTTP/1.1 or no keep-alive: upgrading to HTTP/2 or HTTP/3 reduces connection setup overhead.

Best practices

  • Target sub-800 millisecond TTFB at the 75th percentile: Google's recommended threshold for a "good" experience.
  • Cache aggressively: the cheapest server work is the work you never do. Static and semi-static pages should be served from cache.
  • Use HTTP/3 where supported: it eliminates head-of-line blocking and reduces handshake latency, especially on mobile networks.
  • Stream the response when possible: sending the head before the rest of the body lets the browser start fetching subresources earlier.
Measures Time to First Byte, the delay between the browser requesting the page and the first byte of the response arriving. TTFB reflects backend, network, and CDN performance and effectively sets the floor for every other loading metric, since rendering cannot begin until bytes start flowing. Sustained high TTFB usually points to slow server processing, missing edge caching, or inefficient redirects.
First Contentful Paint Test
90% of top 100 sites passed
The First Contentful Paint value of this webpage is 2.452 seconds. To provide a good user experience, Google recommends that sites should strive to have a First Contentful Paint value of 1.8 seconds or less.
2.452 s
1.8 s
3 s

First Contentful Paint Test

How to pass this test?

First Contentful Paint (FCP) measures the time from when the page starts loading to when any part of its content is rendered on the screen. FCP is the user's first visual confirmation that the page is loading, and faster values are strongly correlated with lower bounce rates and better Core Web Vitals scores. Fixing this issue means reducing time to first byte, eliminating render-blocking resources, and serving above-the-fold content without delay.

Where to make the change

  • Server and CDN: reduce TTFB so the browser receives bytes sooner. Edge caching for HTML produces dramatic FCP wins.
  • Application code or templates: inline the critical CSS for above-the-fold content and defer everything not needed for the first paint.
  • Build pipeline: ensure JavaScript bundles are split so the initial load only includes what is needed for first render.

Common causes and how to resolve them

  • Slow TTFB: address the underlying server, redirect, or hosting issue (see Time to First Byte fix).
  • Render-blocking CSS: inline the critical CSS for the first viewport, load the full stylesheet asynchronously.
  • Render-blocking JavaScript in the head: add defer or move scripts to the end of the body.
  • Web fonts delaying text rendering: add font-display: swap so a fallback font is shown immediately while the custom font loads.
  • Heavy hero image without prioritization: add fetchpriority="high" to the hero image and <link rel="preload"> for it in the head.

Best practices

  • Target sub-1.8 second FCP at the 75th percentile: Google's recommended threshold for a "good" experience.
  • Inline critical CSS: the styles needed for the first viewport should not require an extra network round trip.
  • Preload key resources: hero image, key fonts, and critical scripts benefit from explicit preload hints.
  • Defer non-critical work: analytics, chat widgets, and below-the-fold content can wait until after first paint.
Measures First Contentful Paint, the moment when the browser renders the first piece of visible content from the DOM, such as text, an image, or an SVG. FCP is the first signal to the user that the page is actually loading, and faster values are strongly correlated with lower bounce rates and better Core Web Vitals scores.
Largest Contentful Paint Test
77% of top 100 sites passed
The Largest Contentful Paint duration of this webpage is 2.45 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
2.45 s
2.5 s
4 s
Largest Contentful Paint element within the viewport:
<img class="g33-media__img" src="/uploads/2026/10/qq79-banner-tai-app-50k.webp" alt="Tải app QQ79, đăng ký tài khoản tặng ngay 50K" width="1640" height="530">
Measures Largest Contentful Paint, the time at which the largest visible element in the viewport, such as a hero image or main heading, finishes rendering. LCP is one of Google's Core Web Vitals and a direct ranking factor, used as a proxy for when the user perceives the page as effectively loaded.
Cumulative Layout Shift Test
91% of top 100 sites passed
The CLS score of this webpage is 0.0000. To provide a good user experience, Google recommends that sites should strive to have a CLS score of 0.1 or less.
0
0.1
0.25
Measures Cumulative Layout Shift, the total amount that visible elements move around unexpectedly while the page loads. Layout shifts cause users to misclick and feel the page is unstable, and CLS is one of Google's Core Web Vitals and a direct ranking factor. Common causes include images without explicit dimensions, late-loading fonts, and aggressively injected overlays such as cookie consent banners.

Server and security

Score:100
Failed:0
Warnings:0
Passed:7
URL Canonicalization Test
93% of top 100 sites passed
https://qq79.li/ and https://www.qq79.li/ resolve to the same URL.
Detects whether different URL variants of the site, such as the apex domain and the www subdomain or HTTP and HTTPS, all resolve consistently to a single canonical version. When the same content is reachable at multiple URLs without proper redirects, search engines may split ranking signals across the variants and become unsure which one to index.
SSL Checker and HTTPS Test
100% of top 100 sites passed
This website is successfully using HTTPS, a secure communication protocol over the Internet.
The certificate is not used before the activation date.
The certificate has not expired.
The hostname "qq79.li" is correctly listed in the certificate.
The certificate should be trusted by all major web browsers.
The certificate was not revoked.
The certificate was signed with a secure hash.
Certificate Chain:
Server certificate
Common Name
qq79.li
Subject Alternative Names
*.qq79.li, qq79.li
Not Valid Before
Sat, October 24, 2026 at 9:08:45 AM UTC
Not Valid After
Fri, January 22, 2027 at 9:08:44 AM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
YE1
Intermediate certificate
Common Name
YE1
Organization
Let's Encrypt
Location
US
Not Valid Before
Wed, September 3, 2025 at 12:00:00 AM UTC
Not Valid After
Sat, September 2, 2028 at 11:59:59 PM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
Root YE
Intermediate certificate
Common Name
Root YE
Organization
ISRG
Location
US
Not Valid Before
Wed, May 13, 2026 at 12:00:00 AM UTC
Not Valid After
Thu, September 2, 2032 at 11:59:59 PM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
ISRG Root X2
Root certificate
Common Name
ISRG Root X2
Organization
Internet Security Research Group
Location
US
Not Valid Before
Fri, September 4, 2020 at 12:00:00 AM UTC
Not Valid After
Mon, September 17, 2040 at 4:00:00 PM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
ISRG Root X2
Verifies whether the site is served over HTTPS with a valid TLS certificate. HTTPS encrypts the connection between visitor and server, protecting credentials and other sensitive data in transit, and Google has used it as a positive ranking signal since 2014. Modern browsers also flag non-HTTPS pages as Not Secure, which damages user trust.
Mixed Content Test (HTTP over HTTPS)
100% of top 100 sites passed
This webpage does not use mixed content - both the initial HTML and all other resources are loaded over HTTPS.
Detects whether a page served over HTTPS is loading any sub-resources such as images, scripts, or stylesheets over insecure HTTP. Mixed content weakens the security guarantees of HTTPS, and modern browsers either block the resources outright or warn the user, often breaking the page in the process.
HTTP2 Test
99% of top 100 sites passed
This webpage is using the HTTP/2 protocol.
Verifies whether the page and its resources are delivered over HTTP/2 or newer, rather than the legacy HTTP/1.1 protocol. HTTP/2 introduces multiplexing, header compression, and prioritization, which together reduce latency and allow the browser to load many resources from the same origin far more efficiently.
HSTS Test
84% of top 100 sites passed
This webpage is using the Strict-Transport-Security header.
strict-transport-security:max-age=31536000
Checks whether the server sends a Strict-Transport-Security header instructing browsers to only access the site over HTTPS. HSTS protects users from protocol downgrade attacks and accidental exposure to insecure connections, and is a baseline requirement for any site handling sensitive data.
Plaintext Emails Test
97% of top 100 sites passed
This webpage does not include email addresses in plaintext.
Scans the page for email addresses written in plain text. Spambots harvest such addresses to add them to bulk mailing lists, so obfuscating contact emails or replacing them with contact forms helps reduce inbox spam without hiding the address from legitimate visitors.
Unsafe Cross-Origin Links Test
45% of top 100 sites passed
This webpage is not using target="_blank" links without rel="noopener" or rel="noreferrer" attribute.
Inspects external links opened in a new tab to confirm they include the noopener or noreferrer relationship attributes. Modern browsers now apply noopener implicitly to such links, so this is largely a defense for older browsers and a way to keep the destination page from running in the same process as the original tab. Including the attributes explicitly remains a security and performance best practice.

Mobile usability

Score:100
Failed:0
Warnings:0
Passed:3
Meta Viewport Test
92% of top 100 sites passed
This webpage is using a viewport meta tag.
<meta name="viewport" content="width=device-width, initial-scale=1" />
Checks whether the page declares a viewport meta tag that controls how the layout scales on mobile devices. Without it, mobile browsers render the page at a default desktop width and shrink it to fit, producing unreadable text and unusable touch targets. A correct viewport declaration is the foundation of responsive design.
Media Query Responsive Test
98% of top 100 sites passed
This webpage is using CSS media queries, which is the base for responsive design functionalities.
Detects whether the page's stylesheets use CSS media queries to adapt the layout to different screen sizes. Media queries are the primary mechanism for responsive design, allowing typography, spacing, and component arrangement to adjust gracefully from phones to large desktops. Because Google now indexes the web mobile-first, the responsive mobile layout is effectively the version search engines crawl, evaluate, and rank.
Mobile Snapshot Test
Mobile view
A rendered screenshot of how the page appears on a mobile device. Useful for visually confirming that responsive layouts work as intended and for spotting issues such as overflowing content, illegible text, or broken images that automated checks alone may miss.

Advanced SEO

Score:88
Failed:1
Warnings:1
Passed:7
Structured Data Test
66% of top 100 sites passed
This webpage is using structured data.
Inspects the page for structured data markup such as JSON-LD or Microdata that follows schema.org vocabularies. Structured data helps search engines understand entities and relationships on the page, often unlocking rich result features in SERPs such as star ratings, FAQs, recipes, and product cards. It is also a primary signal AI answer engines use to extract precise facts when generating responses.
Custom 404 Error Page Test
80% of top 100 sites passed
This website is using a custom 404 error page. We recommend to have a custom 404 error page in order to improve the website's user experience by letting users know that only a specific page is missing/broken (and not the entire site), providing them helpful links, the opportunity to report bugs, and potentially track the source of broken links.
Detects whether the site serves a branded, helpful page when a requested URL is not found, instead of the browser's generic error screen. A custom 404 keeps users on the site by offering navigation, search, or suggested links, which reduces frustration and protects engagement metrics that influence both UX perception and indirect SEO outcomes.
Noindex Tag Test
99% of top 100 sites passed
This webpage does not use the noindex meta tag. This means that it can be indexed by search engines.
Detects whether the page is being excluded from search engine indexes via a noindex directive in the robots meta tag or X-Robots-Tag HTTP header. A noindex on the wrong page is one of the most common ways important content silently disappears from search results, so verifying its absence on pages meant to rank is critical.
Canonical Tag Test
93% of top 100 sites passed
This webpage is using the canonical link tag. This tag specifies that the URL: https://qq79.li/ is preferred to be used in search results. Please ensure that this specification is correct, as canonical tags are often hard-coded and may not always reflect the latest changes in a site's URL structure.
<link href="https://qq79.li" rel="canonical"/>
Detects whether the page declares a canonical link tag indicating its preferred URL. Canonical tags consolidate ranking signals across duplicate or near-duplicate URLs onto a single authoritative version, which prevents search engines from splitting authority across variants caused by query parameters, session IDs, or alternate paths. They also help AI crawlers identify the source of truth when citing the page.
Nofollow Tag Test
This webpage does not use the nofollow meta tag. This means that search engines will crawl all links from this webpage.
Detects whether the page applies a nofollow directive, either through a robots meta tag, an X-Robots-Tag header, or per-link rel attributes, that tells search engines not to follow outbound links. Google recommends nofollow for sponsored links and for user-generated content where the linked sites are not vetted, so its presence or absence has real consequences for how link equity flows.
Disallow Directive Test
The robots.txt file does not use the disallow directive. This means that the whole website can be crawled by search engines.
Surfaces the disallow rules declared in the site's robots.txt file. Disallow directives tell search engine crawlers not to access specific files, paths, or directories, which is useful for keeping admin sections and duplicate content out of indexes but dangerous when applied too broadly, since over-blocking can hide important pages from search.
Meta Refresh Test
98% of top 100 sites passed
This webpage is not using a meta refresh tag.
Detects whether the page uses a meta refresh tag to automatically reload or redirect after a delay. Meta refresh is largely obsolete, hurts accessibility by jumping focus and disorienting screen reader users, and is a weaker signal to search engines than a proper server-side 301 redirect. Its presence usually indicates outdated implementation worth updating.
SPF Records Test
94% of top 100 sites passed
This DNS server is not using an SPF record! SPF (Sender Policy Framework) allows administrators to specify which hosts are allowed to send mail from a given domain by creating a specific SPF record or TXT record in the Domain Name System (DNS). You can find more information about SPF records here.

SPF Records Test

How to pass this test?

The Sender Policy Framework (SPF) DNS record lists the mail servers authorized to send email on behalf of your domain. Receiving servers use it to verify that messages claiming to come from your domain are legitimate, which significantly reduces the chance of email being marked as spam. Fixing this issue means publishing an SPF record in your DNS that includes every legitimate sender and ends with a strict policy.

Example

example.com.  TXT  "v=spf1 include:_spf.google.com include:mailgun.org ~all"

Where to make the change

  • DNS provider: add a TXT record at the domain root with the SPF policy. Cloudflare, Route 53, Namecheap, GoDaddy, and similar all expose a TXT record editor.
  • Email providers: Google Workspace, Microsoft 365, and most transactional email services publish their required SPF include directives in their setup documentation.

Common causes and how to resolve them

  • No SPF record at all: add one. Even a minimal record (v=spf1 include:_spf.google.com ~all) is better than nothing.
  • Multiple SPF records: SPF only allows one TXT record per domain. Merge multiple records into a single one with all required include: directives.
  • Policy too permissive: ending with +all authorizes anyone to send as your domain. Use ~all (soft fail) or -all (hard fail) instead.
  • Missing legitimate senders: add an include: for every transactional email service (SendGrid, Mailgun, Postmark) and every marketing platform you use.
  • Too many DNS lookups: SPF caps include lookups at ten. Flatten or consolidate include: chains if you exceed it.

Best practices

  • Pair SPF with DKIM and DMARC: SPF alone is not enough. DKIM signs messages cryptographically; DMARC tells receivers what to do when SPF or DKIM fails.
  • Start with ~all, move to -all: soft fail lets you observe before strict enforcement. Move to hard fail once you are confident no legitimate sender is missing.
  • Test deliverability: tools such as MXToolbox SPF check or Google Postmaster Tools surface SPF problems before users complain.
  • Audit annually: as you add or remove email vendors, the SPF record needs to keep up.
Checks the domain's DNS for a Sender Policy Framework record. SPF lets receiving mail servers verify that messages claiming to come from the domain were actually sent by an authorized mail server, which significantly reduces the chance of legitimate email being marked as spam and protects the domain's sender reputation.
Ads.txt Validation Test
67% of top 100 sites passed
This website doesn't use an ads.txt file! Ads.txt is a text file that contains a list of Authorized Digital Sellers. The purpose of ads.txt files is to give advertisers and advertising networks the ability to verify who is allowed to sell advertising on your website.
Validates the format of the site's ads.txt file, which publishers use to declare which advertising vendors are authorized to sell their inventory programmatically. A correctly formatted ads.txt protects against domain spoofing in the ad supply chain and is required for inclusion in many premium advertising marketplaces.

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