YouTube Gap Analyzer Now Available in the Semrush App Center
Semrush has introduced YouTube Gap Analyzer to its App Center, expanding the range of tools available to marketers and creators working with video.
April 22, 2026
According to the latest Google data, as webpage load time goes from one to ten seconds, the probability of a mobile site visitor bouncing increases 123%. Sounds challenging, doesn’t it?
The good news is there is still plenty of time to get ready for the upcoming Google Speed Update, which officially makes page speed a ranking factor for mobile searches.
To help you ensure your website delivers the fastest experience, we’ve developed the Performance Report within the Site Audit tool. A few weeks ago we presented the webpage resources checks that help you identify issues causing low page speed. Let’s see now what the complete Performance Report gives you in detail!
The good news is there is still plenty of time to get ready for the upcoming Google Speed Update, which officially makes page speed a ranking factor for mobile searches.
To help you ensure your website delivers the fastest experience, we’ve developed the Performance Report within the Site Audit tool. A few weeks ago we presented the webpage resources checks that help you identify issues causing low page speed. Let’s see now what the complete Performance Report gives you in detail!
Performance Report
To access the report, all you have to do is to head to your project for which you’ve set up Site Audit and click the ‘View Details’ button under the report’s name.
Now you have all the information you need in one page!
We recommend that you re-run Site Audit to get the freshest data.
Performance Graphs
To allow you to see a broader picture and visualize the data on your website performance, we’ve implemented the following graphs into the report.
Page (HTML) Load Speed shows how long a webpage’s HTML code takes to load, where load times for images, JavaScript and CSS files are not factored in. Click on the circle to find out a particular page’s load time.
Avg. Page (HTML) Load Speed shows the trend of an average page load speed during different recrawls and allows you to see your optimization results in progress.
Number of JavaScript and CSS shows your pages breakdown based on the number of JS & CSS files they have and allows you to find pages with too many webpage resources. Click on a column to check a particular page’s number of JS & CSS files.
JavaScript and CSS Size shows your pages’ breakdown based on their JS & CSS size and allows you to find pages with sizeable webpage resources. Click on a column to find out the JS & CSS file sizes for a particular page.
Page (HTML) Load Speed shows how long a webpage’s HTML code takes to load, where load times for images, JavaScript and CSS files are not factored in. Click on the circle to find out a particular page’s load time.
Avg. Page (HTML) Load Speed shows the trend of an average page load speed during different recrawls and allows you to see your optimization results in progress.
Number of JavaScript and CSS shows your pages breakdown based on the number of JS & CSS files they have and allows you to find pages with too many webpage resources. Click on a column to check a particular page’s number of JS & CSS files.
JavaScript and CSS Size shows your pages’ breakdown based on their JS & CSS size and allows you to find pages with sizeable webpage resources. Click on a column to find out the JS & CSS file sizes for a particular page.
Performance Issues
The essential part of this report is the following list of issues that may slow down your website and thus lead to a drop in rankings. Click on the ‘Why and how to fix it’ section next to each check to find more information on the issue and get actionable recommendations on how to solve it.
The Large HTML page size issue is triggered if the size of the HTML code contained on a page exceeds 2 MB.
The Redirect chains and loops issue is triggered if the redirects on your website are done incorrectly and lead both crawler and user to nowhere.
The Slow page load speed issue is triggered if the loading of a webpage’s HTML code is too slow, where load times for images, JS & CSS are not factored in.
The Uncompressed pages issue is triggered if you don’t enable compression on your webpages, and, more precisely, the Content-Encoding entity is not present in the response header.
The Uncompressed Javascript and CSS files issue is triggered if you don’t use compression for your JS & CSS files, and, more precisely, the compression is not enabled in the HTTP response.
The Uncached Javascript and CSS files issue is triggered if you don’t enable browser caching for your JS & CSS files, and, more precisely, the browser caching is not specified in the response header.
The Too large JavaScript and CSS total size issue is triggered if the total transfer size of the CSS & JS files used on your page exceeds 2 MB.
The Too many JavaScript and CSS files issue is triggered if a webpage uses more than a hundred CSS & JS files.
The Unminified JavaScript and CSS files issue is triggered if you haven’t minified your JS & CSS files. Minification is the process of removing unnecessary lines, white space and comments from the source code.
The Slow avg. document interactive time issue is triggered if your page takes more than 1 second to become interactive.
The Large HTML page size issue is triggered if the size of the HTML code contained on a page exceeds 2 MB.
The Redirect chains and loops issue is triggered if the redirects on your website are done incorrectly and lead both crawler and user to nowhere.
The Slow page load speed issue is triggered if the loading of a webpage’s HTML code is too slow, where load times for images, JS & CSS are not factored in.
The Uncompressed pages issue is triggered if you don’t enable compression on your webpages, and, more precisely, the Content-Encoding entity is not present in the response header.
The Uncompressed Javascript and CSS files issue is triggered if you don’t use compression for your JS & CSS files, and, more precisely, the compression is not enabled in the HTTP response.
The Uncached Javascript and CSS files issue is triggered if you don’t enable browser caching for your JS & CSS files, and, more precisely, the browser caching is not specified in the response header.
The Too large JavaScript and CSS total size issue is triggered if the total transfer size of the CSS & JS files used on your page exceeds 2 MB.
The Too many JavaScript and CSS files issue is triggered if a webpage uses more than a hundred CSS & JS files.
The Unminified JavaScript and CSS files issue is triggered if you haven’t minified your JS & CSS files. Minification is the process of removing unnecessary lines, white space and comments from the source code.
The Slow avg. document interactive time issue is triggered if your page takes more than 1 second to become interactive.
What do you think about these major enhancements? Please share your feedback and thoughts with us at site-audit-feedback@semrush.com, and stay tuned, as more updates are on the way!
About Semrush
Semrush is a leading online visibility management SaaS platform that enables businesses globally to run search engine optimization, pay-per-click, content, social media and competitive research campaigns and get measurable results from online marketing. Semrush offers insights and solutions for companies to build, manage, and measure campaigns across various marketing channels. Semrush, with over 91,000 paying customers, is headquartered in Boston and has offices in Philadelphia, Trevose, Austin, Dallas, Amsterdam, Barcelona, Belgrade, Berlin, Limassol, Prague, Warsaw, and Yerevan.
