Top "Firefox-developer-tools" questions

For questions relating to the built-in developer tools in Firefox (Web Console, Debugger, Inspector, Style Editor, and other features similar to Firebug).

How to edit or remove cookies in Firefox DevTools?

In Firebug I am able to remove and edit any cookies using the Cookies panel. But in the Firefox DevTools …

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How to make permanent changes to a website's CSS from within the browser?

If I am trying to edit some CSS in a huge project using the built-in developer tools in Firefox (which …

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Firebug is not working with Firefox version 50.0

I am using Firefox 50.0. After auto update of Firefox to version 50.0, Firebug has stopped working and attempting to use it …

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Can I prevent the Firefox developer tools network panel from clearing on page reload?

I would like to observe the contents of a POST request whose successful completion results in a location.reload() - …

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What does "Blocked" really mean in the Firefox developer tools Network monitoring?

The timing section of the Firefox Network Monitor documentation, "Blocked" is explained as: Time spent in a queue waiting for …

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Increase code font size in firefox developer tool

How to increase code fonts in Firefox developer tools? I know that there is a zoom function but I want …

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What unique features does Firebug have that are not built-in to Firefox?

I just cleaned my Firefox addons and wondered: Which features does Firebug have that make it unique? Which features are …

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What are the alternatives to the Firefox Developer Tools?

Since last few updates of Firefox our beloved Firebug is integrated into the Firefox Developer Tools and a lot of …

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How to get DOM element Xpath in Firefox

It might be just me but I can't find any way to get DOM element's XPATH in Firefox. That was …

firefox xpath firefox-developer-tools
How to prevent Firefox DevTools from showing "Source Map not found" errors?

I am using a couple of 3rd party minified Javascript files that have no .map file. When I am debugging …

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