How To [BETTER] Download Firefox Developer Edition
Fritzi Schlicker
The new fonts panel in Firefox DevTools gives developers quick access to all of the information they need about the fonts being used in an element. It also includes valuable information such as the font source, weight, style and more.
One of the biggest pain points for developers is having to use numerous siloed development environments in order to create engaging content or for targeting different app stores. For these reasons, developers often end up having to bounce between different platforms and browsers, which decreases productivity and causes frustration.
Most features will make it into standard Firefox, but many aspects of the developer edition, like the new theme, are disabled by default unless #ifdef MOZ_DEV_EDITION during build. E.g., hg.mozilla.org/mozilla-central/diff/1ed7cff1a04a/browser/app/profile/firefox.js#l1.30
I guess Mozilla feels the dev tools are mature enough in, what was, Aurora; and they want to get developers using the new tools sooner. Which, really, will lead to more tool feedback, which will lead to better tools.
I want to develop a specific feature for the web browsers including chrome and firefox. I am new to this area, but have some good ideas as to what features should be available on a standard browser,
Could you please suggest me how to achieve it, I dont know web programmaing, Would really appreciate your help.
Thanks
Great work. I have been using developer version since it came out. I like the new flat theme and that you gave users a choice of light or dark theme. quite spiffy. I find the network tab very helpful.
The main issue for me (that is ultimately making the decision to consider actively using it very hard) is performance. Getting a lot of cpu spikes pushing over 100%. Mostly when using the developer tools, or viewing a website using any kind of CSS animation.
I have been using the program for a couple of days and so far it sounds great.
The dark theme is fantastic, and you have a lot of information and tools for any task at hand!
Just a single suggestion at a glance: using the element picker tool, it would be nice if the Web developer tools window came back on top after clicking with the mouse on the object to be examined.
Anyway, a great job. Thank you!
I had FF beta channel installed side-by-side with the developer edition on a Mac, and last week it seemed like the beta channel install had flushed my profile data. But I went to open developer edition just now, ran into the issue mentioned above, and discovered that the beta channel had just switched to opening the developer edition profile by default somehow.
Did you get Firefox from an apt repo? if not, it might not have the right permissions (or at least, right enough for us).
If that is the case, please locate your Firefox's installation folder (e.g. /.local/apps/firefox ) , then cd into it and run:
sudo chown -R root:root /.local/apps/firefox && sudo chmod 755 /.local/apps/firefox/firefox-bin
So I ran into this same problem on Linux (and was confused up until seeing this post since this works fine on Windows and Mac). I'm not entirely happy with this solution, since I don't want the superuser owning a directory in my own home directory. Is there a reason why 1password wants firefox to be in a specific directory and owned by root? Is there any way it can be configured to allow being owned by the person who owns the running process? I can see how this could be used as an attack vector (run some copy of firefox some other user installed and you can't trust it), but I don't see the harm in running a copy of firefox which I installed myself in my own directory and owned by my user.
Actually, I realized one issue with this fix/workaround - by making the directory owned by root, Firefox Developer Edition actually can't update itself unless I'm running it as root. So now I'm a little confused about what the change is trying to achieve here - before changing permissions, it always thinks Firefox has an update, but after changing permissions, it no longer thinks that, it just can't actually install the update. I guess this is less of an issue if you install Firefox from system repos or a PPA and can update via package manager, but I don't think Developer Edition is available from a PPA (though beta is: mozillateam/+archive/ubuntu/firefox-next). At least at some point Developer Edition had slightly different developer tools than the regular Beta but I don't know if that's still the case...
I get a "Software is Preventing Firefox Developer Edition From Safely Connecting to This Site" (DigiCert Global Root CA) (MOZILLA_PKIX_ERROR_MITM_DETECTED) error and there is no way to add an exception.
It works again when I downgrade firefox but doing that I cannot use my normal firefox profile anymore, cause the "firefox version I am trying to use is too old, please create a new profile" which I don't want to do.
ecurity.enterprise_roots.enabled is not set to true. Did mozilla change anything with firefox with the last update so that would be necessary? As I said, the downgraded firefox version works as usual. I would try it but I am not exactly sure what the implications are exactly.
This is constant problem since firefox 70.0-1 update couple of days ago. Duckduckgo doesn't work at all, reddit works on and off, I have run into several other sites that don't work or work every n-th load... Please fix this guys.
I'm having the exact same problem.
"DigiCert Global Root CA" is tripping firefox. Several websites stop working. If I reconnect and restart firefox, it seems to work fine. But it will inevitably break again.
Update: couple of updates of firefox-developer-edition later it now happens on both regular firefox and in developer edition. What is the proper way to raise this to maintainers attention, it makes any flavor of firefox pretty impossible to use? Is it possible to be localized problem so maintainers don't see it?
Formerly known as Firefox Quantum, Firefox Developer Edition is a specialized web browser built especially for web developers. Some of these tools and features eventually do make their way into the main Mozilla Firefox web browser.Stepping aside from the main development branch of Firefox, Firefox Developer offers a number of features that are currently not present in Firefox, namely beta features and tools for web development.The look and feel of Firefox Developer Edition is slightly different from the main release, but it's nothing to get too excited about; it's mainly just the color scheme.In terms of tools, Developer Edition provides a WebIDE, Browser Console, Responsive Design Mode, Eyedropper, Scratchpad (for JavaScript debugging) and Service Workers. These tools can be handle for testing web applications.Like the main branch of Firefox, this version also includes the main development tools like the Inspector, Console, Debugger, Style Editor, Performance tab, Memory, Network, Storage and Accessibility.Features of Firefox Developer Edition
- Accessibility Inspector: Evaluate web pages for accessibility issues.
- CSS Grid Layout: Create powerful and adaptive layouts with the enhanced Grid Inspector.
- DOM Inspector: Examine web page structure and layout.
- Developer Toolbar: Quickly access Firefox Developer Tools.
- JavaScript Debugger: Debug JavaScript code line-by-line.
- Memory Tool: Track and analyze memory usage in web pages.
- Network Monitor: Monitor web requests and responses to detect performance issues.
- Performance Tools: Analyze and optimize the performance of web content.
- Responsive Design: Quickly build, test and preview responsive websites.
- Scratchpad: Test JavaScript code in an interactive environment.
- Source Editor: Edit and debug HTML, CSS and JavaScript.
- Style Editor: Create and edit CSS rules.
- Validation: Validate HTML, CSS and other web technologies.
- Web Console: View and debug messages logged by the browser.
- WebIDE: Develop, deploy and debug Firefox OS apps.
At the end of the article, they have this very cool link called DevTools Challenger and you can use this to test the new possibilities of the developer tools. Also, this DevTools Challenger should be utilized with Firefox Developer Edition browser.
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