This test shows you what steps you can take to optimize the CSS delivery of your web page(s). It checks your web page to find unoptimized methods and CSS scripts and gives you advice on how to optimize this. Learn more about optimizing the CSS delivery here.
By perfecting the CSS delivery you make sure your CSS scripts do not block the rendering of your web pages, especially the above-the-fold content. For instance, using external CSS files blocks your web page from rendering immediately. By replacing your CSS files with inlined CSS scripts you eliminate this problem. This tool can tell you which parts of your website need CSS delivery optimization.
Analyze your CSS to make improvements to the CSS Delivery.
Minimize CSS scripts and files for page speed.
Minify your JS files and scripts to maximize performance.
Check whether your web pages have Gzip compression enabled.
Tests your image delivery so you can improve it.
Reduce your PNG image filesize while keeping quality.
Play with the quality and size of JPEGs to save disk space.
Place multiple images in one image to make fewer requests.
Check how and whether your website files are cached.
Test your web pages for broken links and requests.
How many HTTP requests do your web pages produce?
Encode JPEG and other files into a Base64 string.
Check whether your website has keep-alive settings as enabled.
Remove line breaks from your scripts to save disk space.
Check the HTTP server header of your site.