Firefox Devtools Articles

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1/10/2026 • EN

Firefox DevTools hides unreferenced CSS variables (#note)

Firefox DevTools now hides unused CSS variables to reduce clutter and improve debugging workflow for developers.

CSS Debugging css variables Firefox Devtools frontend development Web Development

Stefan Judis

9/10/2023 • EN

Cool Tools

A developer shares a curated list of essential tools and libraries for modern web development, including bundlers, performance testers, and VS Code extensions.

css Firefox Devtools parcel svg webpagetest

Michelle Barker

6/5/2015 • EN

Browsers and Bugs 22/2015

A weekly roundup of browser updates, bug fixes, performance tools, and web development resources from June 2015.

Chrome debugging Firefox Devtools JavaScript performance

Michael Scharnagl

3/13/2015 • EN

Browsers and Bugs 10/2015

A roundup of browser updates, bug fixes, and developer tools news for March 2015, focusing on Chrome, Firefox, and Opera.

Browser Compatibility Chrome Devtools debugging Firefox Devtools JavaScript