Firefox Developer Edition is a version of Mozilla product created specifically for software developers. It has several new features and unique functionality. This version of the browser can actually operate independently of standard Firefox and family browsers like Safari. It borrows the default colors and interface elements from the developer tool set which makes the interface itself easy to use and navigate if you have any experience in development of products in this line.
Some of the new tools, like the Valence add-on, give you access to Firefox developer tools for other browsers. Other notable features include things like Responsive Design View, which lets users change screen sizes in real-time without adjusting size of their browser window. Then, there's the style editor, a tool that lets you edit CSS page styles, to create your own variations and apply existing CSS style sheets to other pages.
Firefox Developer Edition is an all-in-one toolbox for people into browser development. It has all the basic tools and some of the more advanced features one would expect from a software bundle like this.
v88.0 [Mar 24, 2021]
New:
- PDF forms now support JavaScript embedded in PDF files. Some PDF forms use JavaScript for validation and other interactive features.
- Print updates: Margin units are now localized.
- Smooth pinch-zooming using a touchpad is now supported on Linux
- To protect against cross-site privacy leaks, Firefox now isolates window.name data to the website that created it. Learn more
Fixed:
- Screen readers no longer incorrectly read content that websites have visually hidden, as in the case of articles in the Google Help panel.
- Various security fixes.
Changed
- Firefox will not prompt for access to your microphone or camera if you’ve already granted access to the same device on the same site in the same tab within the past 50 seconds. This new grace period reduces the number of times you’re prompted to grant device access.
- The ‘Take a Screenshot’ feature was removed from the Page Actions menu in the url bar. To take a screenshot, right-click to open the context menu. You can also add a screenshots shortcut directly to your toolbar via the Customize menu. Open the Firefox menu and select Customize…
- FTP support has been disabled, and its full removal is planned for an upcoming release. Addressing this security risk reduces the likelihood of an attack while also removing support for a non-encrypted protocol.
Enterprise:
- Various bug fixes and new policies have been implemented in the latest version of Firefox. You can see more details in the Firefox for Enterprise 88 Release Notes.
Developer:
- Developer Information: Introduced a new toggle button in the Network panel for switching between JSON formatted HTTP response and raw data (as received over the wire).
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Unresolved:
- Some purchased video content may not play correctly due to a recent Widevine plugin update (bug 1705138). This will be addressed in an upcoming bug fix release.
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