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SEO Report for https://hello88n.net/vu-ba-ngoc

Your general SEO Checkup Score

SEO Score76/100
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)

Your site scored 76/100, just above the 75 average for top sites. We found 12 issues to fix, and they're what's holding you back from the top spots.

12 Failed
4 Warnings
42 Passed

Want to fix these issues and track your progress?

Issues to fix

HIGH
H1 and H2 tags ensure better search engine visibility and ranking by providing structure and hierarchy to the content, improving readability, and providing opportunities for keyword optimization.
Details
HIGH
Add a meta description tag to provide a brief and informative summary of the page's content for search engines.
Details
HIGH
To ensure that Search Engines can accurately identify the topic of this webpage, it is important to include the most common keywords in the title tag, meta description, and heading tags.
Details
HIGH
To improve the website experience for your visitors, it is recommended to eliminate any render-blocking resources on this webpage.
Details
HIGH
By creating a custom 404 error page with helpful links and information, users are more likely to stay on the site and continue to explore.
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
Keep in mind that the NOINDEX meta tag instructs search engines not to index a webpage. Please verify if this is the intended behavior, as the webpage will not appear in search engine results.
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
Consider adding the Strict-Transport-Security header to your webpage to ensure that web traffic is encrypted over HTTPS, mitigating the risk of man-in-the-middle attacks and other security threats.
Details

Common SEO issues

Score:59
Failed:4
Warnings:1
Passed:14
Meta Title Test
100% of top 100 sites passed
This webpage is using a title tag.
Text: Vũ Bá Ngọc - hello88n.net
Length: 25 characters
Your webpage's meta title is an HTML tag that defines the title of your page. This tag displays your page title in search engine results, at the top of a user's browser, and also when your page is bookmarked in a list of favorites. A concise, descriptive title tag that accurately reflects your page's topic is important for ranking well in search engines.
Meta Description Test
92% of top 100 sites passed
This webpage is not using a meta description tag! You should include this tag in order to provide a brief description of your page which can be used by search engines. Well-written and inviting meta descriptions may also help click-through rates to your site in search engine results.

Meta Description Test

How to pass this test?

In order to pass this test you must include a meta-description tag in your page header (<head> section):

<head>
	<meta name="description" content="type_your_description_here">
</head>

Note that in HTML the <meta> tag has no end tag but in XHTML this tag must be properly closed.

Meta description can have any length but a good practice is to keep this under 160 characters (search engines generally truncate snippets longer than this value).

Your webpage's meta description is an HTML tag that is intended to provide a short and accurate summary of your page. Search engines use meta descriptions to help identify the a page's topic - they may also use meta descriptions by displaying them directly in search engine results. Accurate and inviting meta descriptions can help boost both your search engine rankings and a user's likelihood of clicking through to your page.
Google Search Results Preview Test
Desktop version
https://hello88n.net/vu-ba-ngoc/Vũ Bá Ngọc - hello88n.net
Mobile version
https://hello88n.net/vu-ba-ngoc/Vũ Bá Ngọc - hello88n.net
Check how your page might appear in Google search results. Google search results typically uses your webpage title, url and meta-description in order to display relevant summarized information about your site. If these elements are too long, Google will truncate their content. Webpage title up to 70 characters in length, and webpage descriptions up to 160 characters in length are recommended in order to optimize readability.
Social Media Meta Tags Test
89% of top 100 sites passed
This webpage is using social media meta tags.
Open Graph Meta Tags
og:localevi_VN
og:typearticle
og:titleVũ Bá Ngọc - hello88n.net
og:urlhttps://hello88n.net/vu-ba-ngoc/
og:site_namehello88n.net
Twitter Card Meta Tags
twitter:cardsummary_large_image
twitter:titleVũ Bá Ngọc - hello88n.net
twitter:label1Thời gian để đọc
twitter:data1Chưa đến một phút
This test will check if the analyzed webpage is using social media meta tags. While this type of meta tags don't affect what people see when they visit the webpage, they exist to provide information about it to search engines and social media platforms. Also, when a link is shared, both Facebook and Twitter will scrape the associated webpage and read its meta tags to display the appropriate information. Thus, social media meta tags will help to amplify your webpage's content, will improve brand visibility and will help to generate website traffic.
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.
2trang
2liên
2điều
2đăng
2tiền
Check the most common keywords in your page and their usage (number of times used). This can help give a quick overview of the keywords and topics that crawlers may associate with your web page.
Keywords Usage Test
48% of top 100 sites passed
The most common keywords of this webpage are not distributed across the important HTML tags! Primary keywords should appear in title tag, meta description and heading tags to help Search Engines to properly identify the topic of this webpage.
Keyword
Title tag
Meta description
Headings
trang
liên
điều
đăng
tiền
This will check if your most common keywords are used in the webpage's title and description
Keywords Cloud Test
chính
chơi
chất
copyright
dung
email
giải
hashtags
hiệu
https
hàng
hướng
khoản
kiện
liên
lượng
mang
miễn
nghiệm
ngành
người
nhanh
nhiệm
nhập
những
quyền
riêng
sách
thoại
thương
tiền
toàn
trang
trong
trách
trải
trực
tuyến
tuyệt
website
điều
điện
đăng
The Keyword Cloud is a visual representation of keywords used on your website. This will show you which words are frequently used in the content of your webpage. Keywords having higher density are presented in larger fonts and displayed in alphabetic order.
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 does not contain H1 headings! H1 headings help indicate the important topics of your page to search engines. While less important than good meta-titles and descriptions, H1 headings may still help define the topic of your page to search engines.

Heading Tags Test

How to pass this test?

In order to pass this test you must identify the most important topics from your page and insert those topics between <h1>...</h1> tags.

Example:

<h1>Important topic goes here</h1>
...
<h1>Another topic</h1>
Check if your webpage is using any H1 and H2 HTML header tags. Header tags are not visible to users, but help clarify and support the overall theme or purpose of your page to search engines. The H1 tag represents the most important heading, e.g., the title of the page or blog post. The H2 tag represents the second most important headings on the webpages, e.g., the subheadings.
Robots.txt Test
99% of top 100 sites passed
This website is using a robots.txt file.
https://hello88n.net/robots.txt
Check if your website is using a robots.txt file. When search engine robots crawl a website, they typically first access a site's robots.txt file. Robots.txt tells Googlebot and other crawlers what is and is not allowed to be crawled on your site.
Sitemap Test
83% of top 100 sites passed
This website has a sitemap file.
https://hello88n.net/sitemap_index.xml
Check if the website has a sitemap. A sitemap is important as it lists all the web pages of the site and let search engine crawlers to crawl the website more intelligently. A sitemap also provides valuable metadata for each webpage.
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?

In order to pass this test you must add an alt attribute to every <img> tag used into your webpage.

An image with an alternate text specified is inserted using the following HTML line:

<img src="image.png" alt="text_to_describe_your_image">

Remember that the point of alt text is to provide the same functional information that a visual user would see. Search engines, users who disabled images in their browsers and other agents who are unable to see the images on your webpage can read the alt attributes assigned to the image since they cannot view it.

Learn more about optimizing images for SEO.

Check if images on your webpage are using alt attributes. If an image cannot be displayed (e.g., due to broken image source, slow internet connection, etc), the alt attribute provides alternative information. Using relevant keywords and text in the alt attribute can help both users and search engines better interpret the subject of an image.
Responsive Image Test
29% of top 100 sites passed
All images in this webpage are properly sized for different users' viewports.
This test will check if all of your page's images are appropriately sized for your user's viewport. Ideally, your page should not serve images that are larger than the version that's rendered on the user's screen. Serving an image larger than the user's viewport results in scaling down the image, use of unnecessary bandwidth, and slower page load time.
Image Aspect Ratio Test
75% of top 100 sites passed
All image display dimensions match the natural aspect ratio.
This test will check if all images are displayed with a correct aspect ratio. If a rendered image has an aspect ratio that's significantly different from the aspect ratio in its source file (the natural aspect ratio), the rendered image may look distorted, possibly creating an unpleasant user experience.
Deprecated HTML Tags Test
94% of top 100 sites passed
This webpage does not use HTML deprecated tags.
Check if your webpage is using old, deprecated HTML tags. These tags will eventually lose browser support and your web pages may render incorrectly as browsers drop support for these tags.
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?

In order to pass this test you must create an account on Google Analytics site and insert into your page a small javascript tracking code.

Example:

<!-- Google Analytics -->
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');

ga('create', 'UA-XXXX-Y', 'auto');
ga('send', 'pageview');

</script>
<!-- End Google Analytics -->

Note that you have to change the 'UA-XXXX-Y' with the proper id which you'll find in your analytics account.

Check if your website is connected with Google Analytics. Google Analytics is a popular, free website analysis tool that helps provide insights about your site's traffic and demographics.
Favicon Test
100% of top 100 sites passed
favicon
This website appears to have a favicon.
Check if your site is using and correctly implementing a favicon. Favicons are small icons that appear in your browser's URL navigation bar. They are also saved next to your URL's title when your page is bookmarked. This helps brand your site and make it easy for users to navigate to your site among a list of bookmarks.
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.
Check your page for JavaScript errors. These errors may prevent users from properly viewing your pages and impact their user experience. Sites with poor user experience tend to rank worse in search engine results.
Console Errors Test
27% of top 100 sites passed
This webpage doesn't have any warnings or errors caught by the Chrome DevTools Console.
This will check the Chrome DevTools Console for warnings and errors. These errors may prevent users from properly viewing your pages and impact their user experience. Sites with poor user experience tend to rank worse in search engine results.
Charset Declaration Test
96% of top 100 sites passed
This webpage has a character encoding declaration.
Content-Type: text/html; charset=UTF-8
This test will check if the webpage has a character encoding declaration ("charset"). If the server doesn't specify a character encoding format when it sends an HTML file, the browser may display some characters incorrectly to users. Google recommends using the Unicode/UTF-8 character set when possible.

Speed optimizations

Score:86
Failed:2
Warnings:3
Passed:15
HTML Page Size Test
23% of top 100 sites passed
The size of this webpage's HTML is 12.9 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.
Check your page's HTML size. HTML size is the size of all the HTML code on your web page - this size does not include images, external JavaScript or CSS files.
DOM Size Test
56% of top 100 sites passed
The Document Object Model (DOM) of this webpage has 143 nodes which is less than the recommended value of 1,500 nodes.
This test will check the size of the DOM tree. When a web page is loaded, the browser creates a Document Object Model (DOM) of the page. All the tags in the HTML document are called nodes and the sum of them is translated as the DOM size. A large DOM tree will likely increase memory usage, cause longer style calculations, and may produce slower layout rendering.
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 52.19 Kb to 12.9 Kb (75% size savings). This helps ensure a faster loading webpage and improved user experience.
Check if your website is using HTML compression. HTML compression plays an important role in improving website speed by finding similar strings within a text file and replacing them temporarily to reduce overall file size.
Site Loading Speed Test
71% of top 100 sites passed
The loading time of this webpage (measured from N. Virginia, US) is around 4.05 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.

Check your website's loading speed. Page speed is an important factor in search engine rankings and overall site success. Pages that take longer than 5 seconds to load can lose up to 50% of users. Faster webpages result in higher traffic, better conversions, and increased sales over slower loading pages.
JS Execution Time Test
53% of top 100 sites passed
The JavaScript code used by this webpage is executed in less than 2 seconds.
This test will check the total execution time of the JavaScript code. Reducing the JavaScript execution time, in general, refers to decreasing the amount of time spent to parse, compile and execute the JavaScript code. Improving JavaScript execution time will result in faster page load times, and improved user experience (which Google uses as a factor in its ranking algorithms).
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
font
43.8 %
150.40 Kb
javascript
31.8 %
109.23 Kb
css
10.8 %
36.90 Kb
image
9.5 %
32.51 Kb
html
4.1 %
14.09 Kb
other
0.0 %
0 B
TOTAL
100%
343.12 Kb
Requests by content type
Content type
Percent
Requests
javascript
59.1 %
13
font
18.2 %
4
css
13.6 %
3
html
4.5 %
1
image
4.5 %
1
other
0.0 %
0
TOTAL
100%
22
Content size by domain
Domain
Percent
Size
hello88n.net
100.0 %
343.12 Kb
TOTAL
100%
343.12 Kb
Requests by domain
Domain
Percent
Requests
hello88n.net
100.0 %
22
TOTAL
100%
22
Check if all the objects requested by this webpage can be retrieved. If they are not retrievable, your page may display incorrectly, leading to a bad user experience and lower search engine rankings.
CDN Usage Test
95% of top 100 sites passed
This webpage is serving all images, javascript and css resources from CDNs.
Check if your webpage's resources (images, javascript and css files) are served via CDNs.
Modern Image Format Test
43% of top 100 sites passed
This webpage is using images in a modern format.
This test will check if the webpage is serving images in modern formats. Image formats like JPEG 2000, JPEG XR, and WebP often provide better compression than PNG or JPEG, which means faster downloads and less data consumption for users.
Image Metadata Test
72% of top 100 sites passed
This webpage is not using images with large metadata.
This test will check if the images used in a webpage have large metadata (more than 16% of the image size). Image Metadata refers to additional information (thumbnails, comments, date-times, copyright, camera model and settings, geo location, etc) which is stored along with the image. Most of this information is useless to site visitors and isn't required by browsers to render images.
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.
Checks if your page is using an image expires tag, which specifies a future expiration date for your images. Browsers will see this tag and cache the image until the specified date (it doesn't re-fetch the unchanged image from your server). This speeds up your site the next time returning visitors arrive at your site and require the same image.
JavaScript Caching Test
96% of top 100 sites passed
This webpage is using cache headers for all JavaScript resources.
Checks if your page is using caching headers for all JavaScript resources. Users browsers will check for these headers and, if any, will cache the JavaScript resources until the specified date (so that it does not keep re-fetching the unchanged file from your server). This speeds up your site the next time returning visitors arrive at your site and require the same JavaScript resource.
CSS Caching Test
98% of top 100 sites passed
This webpage is using cache headers for all CSS resources.
Checks if your page is using caching headers for all CSS resources. Users browsers will check for these headers and, if any, will cache the CSS resources until the specified date (so that it does not keep re-fetching the unchanged file from your server). This speeds up your site the next time returning visitors arrive at your site and require the same CSS resource.
JavaScript Minification Test
98% of top 100 sites passed
All JavaScript files used by this webpage are minified.
Checks if any external javascript files used in your page is minified. Minified files reduce page size and overall load time.
CSS Minification Test
100% of top 100 sites passed
All CSS resources used by this webpage are minified.
Checks if any CSS files used in your page is minified. Minified files reduce page size and overall load time.
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?

In order to pass this test, you have to reduce the impact of render-blocking resources.

First, you have to identify what's critical and what's not. You can use the Chrome DevTools (Coverage tab) to identify non-critical CSS and JS.

Once you've identified critical code, you can try the below methods to eliminate render-blocking resources:

  • inline critical JS within a script tag in your HTML document
  • inline critical CSS required for the first paint inside a style block in the head of the HTML document
  • move the script and link tags at the end of the HTML document
  • add async or defer attributes to non-critical script or link tags
  • split CSS styles into different files, organized by media query
  • compress and minify your text-based resources
This test will check if any of the webpage's JavaScript or CSS resources is blocking the render process. When the browser encounters a render blocking resource, it stops downloading the rest of the resources until these critical files are processed. In the meantime, the entire rendering process is put on hold. Aim to reduce the impact of these render-blocking URLs by inlining critical resources, deferring non-critical resources, and removing anything unused. This can greatly improve page load times and the user experience (factors which Google uses in its ranking algorithms).
URL Redirects Test
97% of top 100 sites passed
This URL performed 1 redirects! While redirects are typically not advisable (as they can affect search engine indexing issues and adversely affect site loading time), one redirect may be acceptable, particularly if the URL is redirecting from a non-www version to its www version, or vice-versa.
https://hello88n.net/vu-ba-ngochttps://hello88n.net/vu-ba-ngoc/
Check how many redirects your URL will perform to resolve to the final destination URL. Redirects often cause search engine indexing issues and can also lead to some minor loading delays. Google recommends removing or keeping redirects to a minimum.
Time To First Byte Test
99% of top 100 sites passed
The Time To First Byte value of this webpage is 0.277 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.
0.277 s
0.8 s
1.8 s
This test will check the Time To First Byte (TTFB) score of the analyzed webpage. TTFB is a metric that measures the time between the request for a resource and when the first byte of a response begins to arrive. To provide a good user experience, Google recommends that sites should strive to have Time To First Byte of 0.8 seconds or less.
First Contentful Paint Test
90% of top 100 sites passed
The First Contentful Paint value of this webpage is 2.886 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.
2.886 s
1.8 s
3 s

First Contentful Paint Test

How to pass this test?

First Contentful Paint (FCP) is a measurement of the amount of time it takes a browser to load the first text or image on the page. Simply put, this is the delay between the start of the loading process to when the page begins to display content. This is important because, even if the page takes a while to load everything or become fully interactive, as long as a visitor can see some sort of progress, they may be more likely to give a few extra seconds to finish. If, instead, all they see is a blank screen, they'll probably just leave completely.

To provide a good user experience, Google recommends sites should strive to have a First Contentful Paint value of 1.8 seconds or less. The 1.8 to 3 seconds range is pretty average, especially for dynamic content and anything beyond 3 seconds usually points to an issue.

To reduce the FCP value and enhance overall website performance, consider these strategies:

  1. Optimize Images and Media Files:
    • Compress and resize images appropriately without sacrificing quality.
    • Use modern image formats like WebP.
    • Implement lazy loading for images and videos, loading them only when they come into the viewport.
  2. Minimize Render-Blocking Resources:
    • Reduce the number of external stylesheets and scripts.
    • Inline critical CSS to render essential styles faster.
    • Defer non-essential JavaScript to load after the initial page render.
  3. Prioritize Above-the-Fold Content:
    • Load critical content and styles first.
    • Utilize asynchronous loading for non-essential elements below the fold.
  4. Leverage Browser Caching:
    • Set appropriate cache headers to store static assets on the user's device.
    • Specify cache durations to avoid redundant downloads on subsequent visits.
  5. Utilize Content Delivery Networks (CDNs):
    • Distribute assets across global CDN servers to reduce latency.
    • Serve content from servers geographically closer to the user's location.
  6. Minimize Server Response Time:
    • Optimize server performance by reducing processing time for requests.
    • Use server-side caching mechanisms to store frequently accessed data.
  7. Reduce Third-Party Scripts:
    • Limit the use of third-party scripts and only include essential ones.
    • Delay loading of non-essential third-party scripts.
  8. Enable Browser Resource Hints:
    • Implement DNS prefetch, preconnect, and preload to speed up resource fetching.
  9. Optimize Fonts:
    • Use web-safe fonts or load only necessary font weights and styles.
    • Employ font-display to control font loading behavior.
  10. Minimize Redirects:
    • Reduce unnecessary redirects as they increase page load time.
    • Ensure that redirects are essential for the user experience.

By implementing these strategies, you can significantly reduce the FCP value of your website, resulting in faster load times, improved user experience, and better SEO performance. Remember that FCP optimization is an ongoing process, and continuous monitoring and refinement are key to maintaining a fast-loading website.

This test will check the First Contentful Paint (FCP) score of the analyzed webpage. FCP is a metric that measures the time from when the page starts loading to when any part of the page's content is rendered on the screen. To provide a good user experience, Google recommends that sites should strive to have a First Contentful Paint of 1.8 seconds or less.
Largest Contentful Paint Test
77% of top 100 sites passed
The Largest Contentful Paint duration of this webpage is 2.89 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
2.89 s
2.5 s
4 s
Largest Contentful Paint element within the viewport:
Text: Hello88 tự hào hợp tác với những đối tác uy tín hàng đầu trong ngành giải trí tr...
Html:

Hello88 tự hào hợp tác với những đối tác uy tín hàng đầu trong ngành giải trí trực tuyến, mang đến trải nghiệm chất lượng và an toàn tuyệt đối c

Largest Contentful Paint Test

How to pass this test?

The reason Google chose LCP as a relevant SEO metric is that it directly influences user experience. The loading of the biggest element on a page determines how quickly the user will be able to view its contents and interact with it. For most websites, you can improve the Largest Contentful Paint by sticking to a few guiding principles:

  • Try to reduce the server response time.
  • Eliminate as many render-blocking resources (CSS and JavaScript) as possible.
  • Optimize the loading times for resources on the webpage.
This test will check the Largest Contentful Paint (LCP) score of the analyzed webpage. LCP is a Core Web Vitals metric that measures when the largest element (image or text block) of a given web page becomes visible within the viewport, relative to when the page first started loading. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
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
DOM element which contributes the most to CLS score:
Score: 0.0000
This test will check the Cumulative Layout Shift (CLS) score of the analyzed webpage. CLS is a Core Web Vitals metric calculated by summing all layout shifts that aren't caused by user interaction. Basically, whenever a page loads, certain page elements unexpectedly shift, affecting the way users interact with the webpage. A website with a low CLS has a stable page display, which does not shift elements around and ensures a steady, predictable loading of all website content. To provide a good user experience, Google recommends that sites should strive to have a CLS score of 0.1 or less.

Server and security

Score:95
Failed:1
Warnings:0
Passed:6
URL Canonicalization Test
93% of top 100 sites passed
https://hello88n.net/vu-ba-ngoc/ and https://www.hello88n.net/vu-ba-ngoc/ resolve to the same URL.
Test your site for potential URL canonicalization issues. Canonicalization describes how a site can use slightly different URLs for the same page (e.g., if http://www.example.com and http://example.com displays the same page but do not resolve to the same URL). If this happens, search engines may be unsure about which URL is the correct one to index. Learn more about canonicalization issues.
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 "hello88n.net" 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
hello88n.net
Subject Alternative Names
hello88n.net, *.hello88n.net
Not Valid Before
Wed, May 14, 2025 at 5:59:38 AM UTC
Not Valid After
Tue, August 12, 2025 at 6:56:56 AM UTC
Signature Algorithm
ecdsaWithSha256
Issuer
WE1
Intermediate certificate
Common Name
WE1
Organization
Google Trust Services
Location
US
Not Valid Before
Wed, December 13, 2023 at 9:00:00 AM UTC
Not Valid After
Tue, February 20, 2029 at 2:00:00 PM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
GTS Root R4
Root certificate
Common Name
GTS Root R4
Organization
Google Trust Services LLC
Location
US
Not Valid Before
Wed, June 22, 2016 at 12:00:00 AM UTC
Not Valid After
Sun, June 22, 2036 at 12:00:00 AM UTC
Signature Algorithm
ecdsaWithSha384
Issuer
GTS Root R4
Check if your website is using HTTPS, a secure protocol for sending/receiving data over the Internet. Using HTTPS indicates that an additional encryption/authentication layer was added between client and server. HTTPS should be used by any site that collects sensitive customer data such as credit card information. Even for sites that do not collect such data, switching to https helps users by improving privacy and overall security. Google is increasingly using https as a positive ranking factor.
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.
This will check if all resources are loaded over a secure HTTPS connection. Mixed content occurs when initial HTML is loaded over a secure HTTPS connection, but other resources (such as images, videos, stylesheets, scripts) are loaded over an insecure HTTP connection. This is called mixed content because both HTTP and HTTPS content are being loaded to display the same page, and the initial request was secure over HTTPS. Browsers may block mixed content, so fixing this issue helps ensure your content loads as intended.
HTTP2 Test
99% of top 100 sites passed
This webpage is using the HTTP/2 protocol.
Checks if the webpage and all resources are served over HTTP/2. As the first major HTTP protocol update since 1997, HTTP/2 offers several key improvements such as increased speed and security.
HSTS Test
84% of top 100 sites passed
This webpage is not using the Strict-Transport-Security header! This is a security header that was created as a way to force the browser to use secure connections when a site is running over HTTPS.

HSTS Test

How to pass this test?

HSTS stands for HTTP Strict Transport Security and it's a security header that was created as a way to force the browser to use secure connections when a site is running over HTTPS.

When a user connects to a site using HTTPS, the website then encrypts the session with a secure sockets layer (SSL) certificate. One of the flaws associated with HTTPS is that it isn't entirely hack-proof: it leaves your site open to SSL stripping. This often occurs with 301 redirects if a website relies on 301 redirects for switching from HTTP to HTTPS. While this doesn't seem like a big deal, it's those few milliseconds in between you really need to worry about because it leaves the site vulnerable to hackers who try to strip down your SSL certificate. The solution for this issue is to add a Strict Transport Security response header.

An HSTS enabled server can include the following header in an HTTPS reply:

Strict-Transport-Security: max-age=16070400; includeSubDomains
This test will check if your webpage is using the Strict-Transport-Security header.
Plaintext Emails Test
97% of top 100 sites passed
This webpage does not include email addresses in plaintext.
Check your webpage for plaintext email addresses. Any e-mail address posted in public is likely to be automatically collected by computer software used by bulk emailers (a process known as e-mail address harvesting). A spam harvester can read through the pages in your site and extract plaintext email addresses which are then added to bulk marketing databases (resulting in more inbox spam). There are several methods for email obfuscation.
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.
This test will check if all links to external pages that have the target="_blank" attribute also have the rel="noopener" or rel="noreferrer" attribute.
When you link to an external site using the target="_blank" attribute, security and performance issues arise:
The external pages you link to may run on the same process as your page. If the other page is running a lot of JavaScript, your page's performance may suffer.
The other page can access your window object with the window.opener property. This may allow the other page to redirect your page to a malicious URL.
Adding rel="noopener" or rel="noreferrer" to your target="_blank" links avoids these issues.

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" />
This will check if the webpage is using a viewport meta tag, which is necessary for responsive web design. Without a viewport meta tag, mobile devices render pages at typical desktop screen widths and then scale the pages down, making them difficult to read. Setting the viewport meta tag lets you control the width and scaling of the viewport so that it's sized correctly on all devices.
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.
Check if your page implements responsive design functionalities using the media query technique. The '@media' rule allows different style rules for screen sizes. Media query techniques allow different presentation and content to be served depending on the output device, helping ensure that your website renders optimally on all devices and platforms.
Mobile Snapshot Test
Mobile view
Check how your website renders on a mobile device.

Advanced SEO

Score:46
Failed:5
Warnings:0
Passed:4
Structured Data Test
66% of top 100 sites passed
This webpage is using structured data.
Check if your webpage is using structured data markup. Search engines use structured data to better understand the content of your webpage and to create rich snippets in search results (which helps increase click-through rate to your site).
Custom 404 Error Page Test
80% of top 100 sites passed
This website is not using a custom 404 error page! Default 404 error pages result in a poor experience - it can mislead users into thinking an entire site is down or broken, greatly increases the chance they leave the website entirely, and looks unprofessional. 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.

Custom 404 Error Page Test

How to pass this test?

Creating a custom 404 error page can be relatively simple or more complicated, depending on what technologies were used to build your website (your web server, framework used, etc). Learn more about the basics of creating a custom 404 error page.

On your custom error page, you should provide relevant information to keep the user's attention so they remain on your website. Some steps to achieve this goal include:

  • Adding links to your most important pages (your best articles articles/content, latest posts, etc.)
  • If you have an e-commerce business, you can display special offers, product recommendations, discounts, etc.
  • Include a search box or a sitemap link to help users find the information they wanted.
  • Use simple language (non-technical) to explain what went wrong.
  • Add a contact form or provide an email address to allow users to get in touch with you for further help.

You can also use your custom 404 error page to track the source of broken links in your site.

This SEO test will check if your website is using a custom 404 error page. By creating a custom 404 error page, you can improve your website's user experience by letting users know that only a specific page is missing/broken (and not your entire site), providing them helpful links, the opportunity to report bugs, and potentially track the source of broken links in your site.
Noindex Tag Test
99% of top 100 sites passed
This webpage is using the noindex meta tag! This means that it will be read but not indexed by search engines.

Noindex Tag Test

How to pass this test?

If you want that your webpage to be indexed by search engines, you have to remove the noindex meta tag from your HTML code.
Check if your webpage is using the robots meta tag or the X-Robots-Tag HTTP header to instruct search engines not to show your site in search results pages.
Canonical Tag Test
93% of top 100 sites passed
This webpage does not use the canonical link tag.
Check if your webpage is using the canonical link tag. The canonical link tag is used to nominate a primary page when you have several pages with duplicate or very similar content.
Nofollow Tag Test
This webpage is using the nofollow meta tag! We recommend to use this tag carefully since search engines will not crawl all links from this webpage.

Nofollow Tag Test

How to pass this test?

If you want search engines to crawl all the outgoing links on your webpage you must remove the nofollow meta tag.
Check if your webpage is using the robots meta tag or the X-Robots-Tag HTTP header to instruct search engines not to follow the links on your page. Outgoing links marked with this tag will tell search engines not to follow or crawl that particular link. Google recommends that nofollow tags are used for paid advertisements on your site and links to pages that have not been vetted as trusted sites (e.g., links posted by users of your site).
Disallow Directive Test
Your robots.txt file includes a disallow command which instructs search engines to avoid certain parts of your website! You are advised to confirm if access to these resources or pages are intended to be blocked (e.g., if they contain internal-only content or sensitive information).
Check if your robots.txt file is instructing search engine crawlers to avoid parts of your website. The disallow directive is used in robots.txt to tell search engines not to crawl and index a file, page, or directory.
Meta Refresh Test
98% of top 100 sites passed
This webpage is not using a meta refresh tag.
This test will check if your webpage is using a refresh meta tag. This tag causes a web page to refresh automatically after a specified amount of time. Users generally don't expect automatic refreshes, so they can be disorienting. Refreshing also moves focus to the top of the page, which may frustrate or confuse users, particularly those who rely on screen readers or other assistive technologies.
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?

An SPF record is a type of Domain Name Service (DNS) record that allows email systems to check if the sender of a message comes from a legitimate source and refuse an email if the source is not legitimate. Adding an SPF record is as easy as adding CNAME, MX or A records in your DNS zone. You can find more information here.

Before creating the SPF record for your domain, it is important to have access at your domain's DNS zone and to know what mail servers your domain is likely to use and plan how you want any non-authorized email to be handled.

Example:

Let's say that you are planning to send emails using Google Apps and you also want to ensure that no other mail servers are authorized. You can use an SPF record like this:

v=spf1 include:_spf.google.com -all

"v=spf1" - This sets the SPF version

"include:_spf.google.com" - This includes Google mail servers in your list of authorized sending servers

"-all" - This means that any server not previously listed is not authorized

If you are using your own VPS to send email and not any other service like Mandrill, Google Apps, etc. then you can create an SPF record like this:

v=spf1 mx -all

Note:

Setting an SPF record for your domain can help in reducing the chances of a spammer using your domain name in unsolicited emails. Research carefully what mail servers your domain is likely to use and plan how you want any non-authorised email to be handled.

Check if your DNS records contains an SPF record. SPF (Sender Policy Framework) records allow email systems to verify if a given mail server has been authorized to send mail on behalf of your domain. Creating an SPF record increases email delivery rates by reducing the likelihood of your email being marked as spam.
Ads.txt Validation Test
67% of top 100 sites passed
The access to the ads.txt file is restricted! Our request for this resource has returned a {status_code} HTTP status code. In order for this resource to be easily accessed by the DSPs and advertisers, its status code should be 200 OK.

Ads.txt Validation Test

How to pass this test?

In order to pass this test, the ads.txt file should be publicly available in the website's root domain and its content should be properly formatted.

The advertising systems will read the content of the ads.txt file only if the request will return a 200 OK HTTP status code. The content of this file should be encoded as a formatted plain text and the HTTP Content-Type header should be text/plain (all other Content-Types are treated as an error and the content will be ignored).

As outlined in the IAB Tech Lab specifications for ads.txt file, the format logically consists of three types of records: comments, data records and variables:

  1. Comments
    Lines starting with # symbol are considered comments and are ignored.
  2. Data records
    For each Exchange or Supply-Side Platform (SSP) that is authorized to sell your inventory you must add a data record. Each of these lines should contain 3 or 4 comma separated fields:
    <FIELD #1>, <FIELD #2>, <FIELD #3>, <FIELD #4>
    • #1 - The canonical domain name of the system where bidders connect (e.g. google.com, appnexus.com, etc)
    • #2 - The publisher account ID
    • #3 - The type of account or relationship (e.g. DIRECT or RESELLER)
    • #4 - (Optional) An ID that uniquely identifies the advertising system within a certification authority
  3. Variables

    Any line containing a pattern of <VARIABLE>=<VALUE> should be interpreted as a variable declaration. The <VARIABLE> is a string identifier without internal whitespace. The only supported separator is the equals sign ‘=’. The <VALUE> is an open string that may contain arbitrary data.

    For human readability it is recommended that variables be declared at the end of the file, but this is not a strict requirement.

    Only the following variables are supported: CONTACT, SUBDOMAIN and INVENTORYPARTNERDOMAIN.

This test will check if your website's ads.txt file has a valid format.

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