Free online tools and resources for web designers
Easily convert any GIF, JPG, PNG or WebP image to AVIF format.
Optimize and compress MP4, WEBM or GIF videos directly from your browser.
Check online if a website supports the HTTP/2 protocol.
Compress JPG and PNG images. You can also save the image in WebP format.
Free online tool to compress and reduce the size of your CSS code. Easy to use.
Online tool to generate a CSS sprite combining several background images.
Test the performance of the DNS servers of a domain name from all over the world.
Check if a website is using GZIP compression.
A lightweight JS lazyLoader which lazy loads images (including picture/srcset), iframes and scripts.
Online image optimizer, using different algorithms, settings and image formats (WebP, AVIF…).
Quickly and easily optimize the size of the image you upload, be it JPG, PNG or WebP.