We have been working to unify Firefox Developer tools and Firebug for some time. From Firefox 49, we’ll be shipping Firebug.next built-in.
For Firebug users this means many new features with the look and feel that you’re familiar with.
New features for Firebug users:
- Memory Panel – The Memory tool lets you take a snapshot of the current tab’s memory heap.
- Web Audio Editor, Shader Editor and Canvas – Developer Tools for debugging media-rich content on the web.
- Storage Inspector – The Storage Inspector enables you to inspect various types of storage that a web page can use (cache, cookies, local & session storage, indexedDB).
- Responsive Design Mode – Responsive Design Mode makes it easy to see how your website or web app will look on different screen sizes.
- Animation Inspector – The Animation Inspector displays animations in the page synchronized along a timeline, with a draggable widget you can use to move to any point in the timeline and see the page at that point.
- And more…
If you use the built-in Firefox Developer Tools, rather than Firebug, then you may like the DOM Panel and Firebug Theme that we’ve added in this merge.
What about Firebug 2
Firebug 2 doesn’t work in multi-process browsers (i.e. e10s) and converting it is too complex, so it will stop working when e10s is activated in Firefox. You will be able to disable e10s for a while to keep using Firebug 2, but this won’t last forever.
Jan Honza Odvarko (Firebug Working Group)
Joe Walker (Firefox Developer Tools)