Outils

Show me a 10ft paywall, I’ll show you a 12ft ladder.

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

An image dithering tool.

Une boîte à outils pour les freelances, dev en agence... et toutes les personnes qui veulent créer des sites de qualité.

Find the true size of an npm package

A quick and easy way to bundle, minify, and compress (gzip and brotli) your ts, js, jsx and npm projects all online, with the bundle file size.

An extensible text editor framework that does things differently

How to identify fonts in websites · in PDFs · in mobile apps · in images

Check that dns-prefetch, preconnect, preload, and prefetch browser resource hints are working correctly on your website.

Lint for your HTTP resources

Cartes open source pour voyageurs, touristes, cyclistes et randonneurs.

See how different network speeds affect site speed metrics. This tool is based on the simulated throttling feature in Lighthouse.

Identify any font with our font finder tool. Upload an image, and we’ll search our collection of over 133,000 fonts for the best match.

Using the CLI is the quickest way to get familiar with Unlighthouse and is recommended for new users.

System font stack CSS organized by typeface classification for every modern OS. The fastest fonts available. No downloading, no layout shifts, no flashes — just instant renders.

Learn how to resizing images from the command-line using ImageMagick’s convert and mogrify commands.

Microsoft Teams PWA is now available for Linux users!

View EXIF data of your images online. Find when and where the picture was taken. Remove metadata and location from the photo to protect your privacy.

A visual & interactive SVG reference. Quickly look up how to define SVG shapes, transforms, masks, patterns, gradients, text and more.

A self-updating list of the most current useragents across operating systems and browsers

The open-source solution for design and prototyping

Command line tool to optimize your webfont loading. Aggressive subsetting based on your font use, self-hosting of Google fonts and preloading - Munter/subfont: Command line tool to optimize your we...