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Questions tagged [firefox]

An open-source web browser developed by Mozilla. If relevant to the question, also include the tag of your operating system.

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Mozilla Firefox, also known as Firefox Browser since version 70, is a free, open-source and cross-platform web browser developed by the Mozilla Foundation, a non-profit organization.

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8665 questions
339
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15 answers

How can I clear a single site from the cache in Firefox?

In Firefox, I occasionally need to clear my cache to fix a website. But clearing the entire cache seems like extreme overkill. Is there any way to just clear the one site from my cache?
Ryan C. Thompson
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326
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11 answers

Determine which tab in Firefox is using CPU resources?

Is there anything in the current Firefox similar to the Task Manager in Google Chrome? (Shift + Esc) There is something that occasionally takes up enough CPU to make Firefox unresponsive - but with multiple windows, each with a dozen or so tabs…
chris
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297
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9 answers

Clear 301-redirect cache in Firefox

Is it possible to clear only 301-redirects from Firefox's cache? CTRL+F5 doesn't do the job since you just reload the target without caching but do not clear the cached redirect. An option to disable caching of those redirects completely would be…
ThiefMaster
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219
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3 answers

How can this website reidentify me even after deleting all of my browser's history and using a VPN?

The website dropmail.me is able to successfully reidentify me (and offer my last used temp mail addresses via. "Restore access") despite doing the following: Delete all my browsers history which includes cache, cookies, website settings, download…
manuel
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202
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19 answers

How to add a custom search engine to Firefox?

Is there a way I can add a custom search URL to the Firefox search bar? e.g. I'd like to provide a URL such as http://blahblah.com?search=%s, where Firefox replaces the %s with the content of the search box. Both IE and Opera can do this, but I…
Andrew Grant
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177
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11 answers

How to download favicon from website?

When you browse a website, the "favicon" icon shows up in the tab or next to the URL (or next to the bookmark). If I want that graphic, is there a way to download it directly from the site? I'd prefer to download it directly from the web, but if all…
Robert Cartaino
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161
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6 answers

All of my Firefox add-ons have been disabled suddenly, how can I re-enable them?

All of my Firefox extensions were spontaneously and simultaneously disabled (converted to Legacy status) a few moments ago. How can I re-enable them? Firefox 66.0.3 (64-bit)
jonsca
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134
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6 answers

Firefox doesn't allow to paste into WhatsApp web anymore?

Since today, with Firefox, I cannot paste text into the text input field of whatsapp.web (the PC version of WhatsApp) anymore. the version is FF 116.0.2 (64-bit) on Windows 10, previous versions of FF worked obviously well... No problem on…
Vickel
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133
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2 answers

How can I override the CSS of a site in Firefox with userContent.css?

In Mozilla Firefox, I want to create userContent.css which overrides the CSS of a site. Where should I create the file (Windows 7)?
Rauf
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129
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11 answers

How to install the real Firefox on Debian?

Debian 6 ("Squeeze") uses a rebranded version of Firefox called Iceweasel. It, however, lacks plugin support, and most of my favorites don't work. So what is best way to install the "real" Firefox on Debian?
kravemir
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128
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2 answers

Why does Firefox use the "chrome://" protocol / schema in URLs?

When I want to configure an addon, for example Ghostery, the tab shows a URL like this one: chrome://ghostery/content/options.html What does it mean? Does it have something to do with the Chrome browser?
ChocoDeveloper
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125
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5 answers

How do these icons work: ✅️?

I can see these characters as colored icons: ✅️ It only works in Firefox for me. If you can't see the characters in color, it looks like this on my system (it's probably font-dependent): I can even see them in firebug and tab titles: And…
Tomáš Zato
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118
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9 answers

How do I make Firefox forget HTTP Basic Auth?

How can I make Firefox "invalidate" it's saved HTTP Basic Auth credentials for a website from the client side? Currently, I have to restart the browser, which is rather cumbersome with multiple tabs open. Is there a way to do this without having to…
MiffTheFox
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118
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16 answers

How do websites block selecting text and how do I unblock that?

There's a website (example) that somehow blocks selecting text. Also it blocks Ctrl+A to select everything, there is also no “Copy” in the popup menu. What I have tried: Some sites use JavaScript to block selection. So I disabled all JavaScript…
user6329530
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112
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1 answer

How to order windows of the same program on taskbar

I'm using Windows 8 and appreciate the ability to reorder my programs at will in the taskbar. However, for different windows of the same program - I have three Firefox windows, for instance - I can't seem to reorder them; what's worse, they seem to…
antialiasis
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