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SEO Score92/100
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 Visibility71/100
AI visibility score reflects brand reach in AI
Your site scored 92/100, comfortably above the 75 average for top sites. We found 3 issues to fix, and they're the gap between you and the very top. And an AI Visibility Score of 71/100 means ChatGPT, Gemini and Perplexity mention your brand some of the time, with clear room to push further.
3 Failed
3 Warnings
57 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.
DetailsLOW
Consider reducing the HTML size to improve loading times and retain visitors.
DetailsLOW
Using more than 20 HTTP requests on a webpage can negatively impact the loading time.
DetailsAI Insights
Score:0
Failed:0
Warnings:0
Passed:5
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
AI-powered online vocal remover and stem separation tool for songs and audio files.
Industry Niche
AI Audio Stem Separation
Target Audience
Musicians, DJs, karaoke users, producers, and content creators who need instrumentals or isolated stems.
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.
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
This webpage is clear, conversion-focused, and well structured around a single core product. It explains the tool, use cases, FAQs, and pricing/value proposition effectively, but it relies heavily on marketing claims with limited independent evidence or depth.
Content Strengths
- Clear Value Proposition
- Strong Use-Case Coverage
- Helpful FAQ Section
Content Weaknesses
- Limited Evidence Depth
- Sparse Credibility Signals
- Marketing-Heavy Copy
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.
69%
Topical Relevance96%
Subject Expertise72%
Credibility58%
This webpage appears moderately trustworthy because it is tightly focused on a single product and includes clear pricing, legal pages, and contact/about links. Trust is weakened by the lack of visible author attribution, testimonials, third-party validation, or cited methodology for the performance claims.
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.
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
78%
The page feels current and actively maintained, with 2026 references in the FAQ and footer copyright. It presents the product as an up-to-date service rather than archived or outdated content, though freshness is inferred mostly from contextual copy and boilerplate rather than explicit publish dates.
Positive Signals
- 2026 product references
- Current-year copyright
- Active usage stats
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.
The page already covers the core product well, but it has room to expand into more authoritative, decision-supporting content. The biggest opportunities are deeper proof, more practical guidance, and richer comparison content that helps users choose and use the tool confidently.
Quick Wins
- •Add a small comparison table near the FAQ contrasting this tool with subscription-based alternatives.
- •Insert one or two before-and-after audio examples on the page to demonstrate output quality.
- •Expand the FAQ with a privacy and copyright question about uploaded songs and URL processing.
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:95
Failed:0
Warnings:1
Passed:18
Meta Title Test
100% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a title tag with a length of 63 characters. While there's no target number of characters, titles should be descriptive and concise. We recommend using a title with a length between 20 - 60 characters in order to fit Google Search results that have a 600-pixel limit.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a meta description tag.
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.
Desktop version
https://stemsplit.io/vocal-remover
Mobile version
https://stemsplit.io/vocal-remover
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.
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.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
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.
accelerated
accuracy
artifact
audio
automatically
available
average
based
best
card
cases
choose
clean
content
create
credit
credits
developers
directly
does
download
drums
expire
extract
file
files
flac
format
formats
free
frequency
handle
instrumental
instrumentals
instruments
integration
isolate
just
karaoke
lalal
loss
minutes
music
need
neural
online
original
output
paste
perfect
powered
practice
pricing
process
processed
processes
processing
producers
production
professional
quality
ready
remixes
removal
remove
remover
removers
removing
required
resources
results
sample
seconds
separate
sign
song
songs
soundcloud
splitter
start
stem
stems
stemsplit
studio
subscription
supported
technology
tool
tools
track
tracks
trained
upload
urls
uses
video
vocal
vocals
webm
youtube
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.
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.
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.
Robots.txt Test
99% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website is using a robots.txt file.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website has a sitemap file.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage doesn't use "img" tags.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
All images in this webpage are properly sized for different users' viewports.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
Google Analytics Test
72% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using Google Analytics.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This website appears to have a favicon.
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.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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:3
Warnings:1
Passed:16
HTML Page Size Test
23% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The size of this webpage's HTML is 77.19 Kb, and is greater than the average size of 33 Kb! This can lead to slower loading times, lost visitors, and decreased revenue. Good steps to reduce HTML size include: using HTML compression, CSS layouts, external style sheets, and moving javascript to external files.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Document Object Model (DOM) of this webpage has 442 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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is successfully compressed using zstd compression on your code. The HTML code is compressed from 348.9 Kb to 77.19 Kb (78% 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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The loading time of this webpage (measured from N. Virginia, US) is around 1.22 seconds and this is under the average loading speed which is 5 seconds.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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
javascript
64.0 %
568.79 Kb
other
15.5 %
138.10 Kb
html
8.2 %
73.28 Kb
font
7.9 %
69.79 Kb
css
4.4 %
38.71 Kb
image
0.0 %
0 B
TOTAL
100%
888.68 Kb
Requests by content type
Content type
Percent
Requests
javascript
81.0 %
47
other
10.3 %
6
css
3.4 %
2
font
3.4 %
2
html
1.7 %
1
image
0.0 %
0
TOTAL
100%
58
Content size by domain
Domain
Percent
Size
stemsplit.io
79.7 %
708.30 Kb
googletagmanager.com
19.1 %
169.64 Kb
static.cloudflareinsights.com
1.2 %
10.74 Kb
TOTAL
100%
888.68 Kb
Requests by domain
Domain
Percent
Requests
stemsplit.io
96.6 %
56
static.cloudflareinsights.com
1.7 %
1
googletagmanager.com
1.7 %
1
TOTAL
100%
58
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is not using image resources!
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is not using uncached images from same domain.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Time To First Byte value of this webpage is 0.077 seconds. To provide a good user experience, Google recommends that sites should strive to have a TTFB of 0.8 seconds or less.
0.077 s
0.8 s
1.8 s
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The First Contentful Paint value of this webpage is 2.356 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.
2.356 s
1.8 s
3 s
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
The Largest Contentful Paint duration of this webpage is 2.36 seconds. To provide a good user experience, Google recommends that sites should strive to have Largest Contentful Paint of 2.5 seconds or less.
2.36 s
2.5 s
4 s
Largest Contentful Paint element within the viewport:
Text: Remove Vocals from Any Song
Html: <h1 class="mx-auto max-w-4xl text-center font-display text-3x..." style="letter-spacing:-0.02em">
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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
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
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
https://stemsplit.io/vocal-remover and https://www.stemsplit.io/vocal-remover 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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 "stemsplit.io" 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
stemsplit.io
Subject Alternative Names
stemsplit.io, *.stemsplit.io
Not Valid Before
Sun, April 26, 2026 at 11:19:59 PM UTC
Not Valid After
Sun, July 26, 2026 at 12:14:36 AM UTC
Signature Algorithm
ecdsaWithSha256
Issuer
WE1
Root 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
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using the Strict-Transport-Security header.
strict-transport-security:max-age=31536000; includesubdomains
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This webpage is using a viewport meta tag.
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5, viewport-fit=cover, user-scalable=yes" />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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
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:98
Failed:0
Warnings:1
Passed:8
Structured Data Test
66% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
Meta Refresh Test
98% of top 100 sites passed
This value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
This DNS server is using an SPF record.
v=spf1 include:mxroute.com -all
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 value indicates the percent of top 100 most visited websites in the US that pass this test (in the past 12 months). Failing a test that a high percentage of top websites are passing may indicate an industry best practice that you should be fixing.
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.
