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Questions tagged [firefox-developer-edition]

Mozilla Firefox Developer Edition is a free and open source Gecko-based web browser. It is the first browser created specifically for developers.

firefox-developer-edition

Firefox Developer Edition

In celebration of the 10th anniversary of Firefox, Mozilla unveiled the Firefox Developer Edition, the first browser created specifically for developers.

Release cycle

Informative Q/A about Firefox Developer Edition

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What is the difference between Mozilla Firefox and Mozilla Firefox Developer Edition?

Mozilla recently launched a new web browser named Mozilla Firefox Developer Edition, ostensibly designed for web developers. So I installed it, but I can't find much of a difference between regular Firefox and the developer edition. Every tool which…
Saurabh Palatkar
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Why does Firefox developer edition use chrome:// urls to load scripts?

I just downloaded a copy of the new Firefox Developer Edition browser and started to fiddle around with the dev tools. I noticed that some of the links and scripts were loaded over chrome:// urls, which I thought were registered for Google…
Dan Prince
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What is the difference between Mozilla Firefox Beta and Firefox Developer Edition?

Currently, the Mozilla Firefox Beta channel and the Developer Edition channel both offer the same version of Firefox. What is the difference between the Beta version and the Developer Edition? Related, but different: What is the difference between…
RockPaperLz- Mask it or Casket
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Firefox Developer Tools failed to inspect variables on hover over

I have FireFox Quantum 57.0.2 (64 bits) and Windows 8.1. It was working fine till now, but suddenly I can't get pop up value on hover over variables. This and other issues come up in all pages regardless of the code. I have tried the…
derloopkat
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Force Firefox to search for URL instead of opening

I am using Firefox Developer Edition 57 and have search bar integrated with address bar like Chrome has. I like this feature, but have problems when I want to search for something that is or looks like URL; for example today I wanted to search for…
Robert Kusznier
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Pages appearing in black on Firefox Developer Edition

I just installed the latest Firefox Developer's Edition (40.0a2) on one of my VMs, and most web pages are showing up on it (images included) as one big black page of nothing. (It works fine on my host system.) How do I fix this so that I can use the…
RobH
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In Windows 7, how can one right click an icon, and "open with" firefox Developer Edition

When I right click a .php file in Windows explorer, and hover over "Open with", it displays my regular Firefox, but not Firefox Developer Edition as an option. If I select "Choose default program...", click "Browse...", navigate to "Program Files…
nHaskins
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Is it possible to edit the stylesheet of FireFox Developer Tools?

Is it possible to edit the visual layout of FireFox's developer tools? I'm talking about the tools themselves, not the webpage that the tools are inspecting. I want to narrow the large gap between the CSS property name and value: I've read that…
Ian Dunn
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How to run Firefox extension using Firefox Developer Edition and jpm?

I'm having some inconvenient with current release Firefox version and want to switch to Dev edition to developing my extension. I've tried the tutorial in this link but doesn't work. The example is for nightly build, which I guess is the folder…
Hp93
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Can I use e10s (multiprocess) in Firefox Dev Edition?

I am using Firefox Developer Edition because I need the browser toolbox features for my work creating add-ons. However, I really like speed boost from the new experimental multi-process feature (electrolysis/e10s). I've seen lots of articles…
Robbie Wxyz
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How to narrow down the list of CSS properties in autocomplete of Firefox Developer Tools or Firebug?

We write CSS properties a lot. That's why autocomplete comes in handy. But it's a little frustrating when I press v hoping for vertical-align and it comes out vector-effect or d hoping for display and it comes out direction etc. I would like to…
Mariusz Ignatowicz
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How to find unsaved passwords in Firefox (if possible)

I created an account for a website, but forgot to copy and save the password I used. I don't remember it because it's a bunch of random characters. I am now logged into the site, but I won't be able to log out and in again until I know my password…
GPWR
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Firefox Developer cannot update automatically

I have Firefox Developer Edition 96.0b3 installed on my Debian Bullseye Stable system. Each time I open up Firefox, I am prompted to download the updated version of Firefox, because it "could not update automatically." It tells me that extracting…
GPWR
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Inspecting elements on localhost doesn't display element dimensions

I'm using both "Regular" Firefox as well as the Developer edition. At the moment I'm developing a website locally (using node.js/gulp) and am experiencing a weird... maybe a bug? Whenever I inspect elements in the Developer Edition through the…
Kablam
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How do I stop Windows 10 from resetting my default browser?

Windows 10 keeps resetting my default browser to Microsoft Edge. I am trying to run Firefox Developer Edition as my default browser. The reset happens randomly, maybe once every week or two, but it is rather annoying. I talked to Microsoft support…
rossng
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