Questions tagged [about-config]

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Firefox preference to set default permission for handling various protocols (e.g. "tel:" links)?

I have the tel: protocol's default handler set to Microsoft Your Phone, so I can place calls and send SMS from my computer. When I click a tel hyperlink in Firefox (e.g. tel:(555)555-5555), I get a FF ...
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2 answers
60 views

Disable Firefox sponsored results

To my horror, I just noticed today that Firefox injects sponsored results into any search: I want this gone now. Is it possible to disable?
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2 votes
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224 views

Firefox ESR on Linux Showing Windows 10 user agent and Will Not Change

For some bizarre reason, Firefox ESR 68.0 running on Debian Linux shows Windows 10 as its user agent when inspected in help>troubleshooting information. Mozilla/5.0 (Windows NT 10.0; rv:68.0) Gecko/...
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  • 59
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1 answer
844 views

For Firefox Quantum (v70) where can I find the theme/persona background image?

Is there a way to get the background image for a Firefox theme downloaded from the Mozilla add-on website? Mainly I want the image for this theme: https://addons.mozilla.org/en-CA/firefox/addon/...
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Are firefox about:config entries saved somewhere besides prefs.js?

I played around with the about:config in firefox. I saved the prefs.js file beforehand in case something goes wrong. When I stop firefox now and replace the file with my earlier copy, the prefs in ...
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2 votes
4 answers
2k views

Firefox show download URLs

With Firefox, I can select History Show All History and it has a "Location" column with the URLs. If I select Tools Downloads, it shows the size of each download, but it does not show URLs. It does ...
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4 votes
1 answer
1k views

Minimum tab width in Firefox Quantum

Firefox Quantum changed the minimum width of Tabs, previous versions of Firefox had it set to a greater value. (*minimum tab width - when you have a lot of open tabs they shrink to some predefined ...
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2 votes
2 answers
2k views

How to determine which preference file lock a Firefox config option

On a Windows 7 computer, My Firefox network.proxy.type is locked so I cannot modify it When looking at C:\Program Files (x86)\Mozilla Firefox\default/prefs/localsettings.js there are only 2 lines: ...
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1 answer
99 views

Firefox JSON View - Enable loose parsing?

In the latest versions of Firefox, it has this nifty JSON Viewer built in. Works great, looks awesome, love it. I have some web servers I deal with that send back JSON that is not strictly proper, ...
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7 votes
2 answers
1k views

How to disable drag&drop of links by default?

I would like to disable the default behavior of Firefox which causes links to be drag&drop elements because it prevents selecting part of the text with the mouse in order to copy it. I never drag&...
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5 votes
3 answers
4k views

What exactly does the number listed under "places.history.expiration.transient_current_max_pages" represent in Firefox?

The entry "places.history.expiration.transient_current_max_pages" in the Firefox about:config page is supposed to set the amount of time that Firefox remembers pages in it's history. However, the ...
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3 votes
1 answer
9k views

What is "dom.push.userAgentID" preference?

I have a modified dom.push.userAgentID preference, type is "string" (I won't share the value, may be unique), in about:config. I certainly haven't modified or created this manually, but an extension ...
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1 vote
1 answer
432 views

Media opened in a background tab will not play until the tab is selected

This feature was introduced with Firefox 56: http://mozilla.org/firefox/56.0/releasenotes However I do not like it. Oftentimes I will middle-click a YouTube song link with the intention that it will ...
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33 views

Firefox - Dialogue Box Settings

I erroneously set Firefox to never allow dialogue windows for a certain website. Now I really need to see those dialogues and I can't find an option to reset my choice. Preferably I would prefer to ...
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  • 317
1 vote
1 answer
240 views

Disable mute tab animation

Starting with Firefox 52. If you are on YouTube or similar, and hit play, the mute tab button comes up immediately. However if you then hit pause, it is about a 5 second delay now before the mute tab ...
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2 votes
1 answer
330 views

How to disable annoying auto go to location while typing in the address bar in Firefox 48+?

I've noticed a strange behavior in Firefox since version 48 (maybe it was in the earlier versions too). When I'm starting to type a domain name in the address bar, sometimes Firefox is trying to ...
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0 answers
181 views

Get rid of stubborn browser start page [duplicate]

Recently, my Firefox home page became stuck on trustedweb.com (probably as a result of something my son had installed). No matter what I set the home page to, it always goes to that trustedweb.com ...
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3 votes
1 answer
3k views

Firefox config - What is the font.internaluseonly.changed setting for?

In Firefox config (about:config) I have a value highlighted in bold: font.internaluseonly.changed user set boolean true What is this setting for and what does the value mean? ...
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3 votes
3 answers
4k views

How can I make Mozilla Firefox always show the download manager

This may be a bit pedantic, but I like to see my full download history, and see the progress of my current downloads in a larger format than the tiny arrow on firefox's navigation/search bar. I have ...
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0 votes
1 answer
75 views

How to configure the search bar over the most visited sites on the "new" page in Firefox?

I'd like to use the search bar over the most visited sites tiles on the "new tab" page in Firefox. But currently, my search requests (e.g. "test") get redirected to Yahoo! and a land on the Yahoo! ...
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  • 1,309
11 votes
1 answer
3k views

How do you hide the Extended Validation text in Firefox?

Certain sites have Extended Validation certificates. On top of the normal lock symbol, Firefox also shows the Organization name next to the lock symbol in green text. This gives users a nice, warm, ...
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4 votes
1 answer
539 views

Old settings for Firefox Sync in Firefox 29

Is there a way to configure Firefox 29 to work with an self-hosted fsyncms-Server by editing e.g. some settings in about:config? I can use my server by installing an older version of Firefox and ...
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0 answers
260 views

Preventing redirect to router/proxy (firefox, keyword.url)

I keep getting redirected to my router page (at home) and a squid proxy server here when entering, e.g. "superuser" in the Address Bar. How do I make Firefox conform to its Keyword.URL; which I've ...
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2 votes
1 answer
2k views

Enabling address bar focus on new tab in firefox

A bit of malware recently overwrote a load of about:config settings in firefox. I've managed to reset them all apart from that when I open a new tab the address bar is no longer focused. Does anyone ...
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4 votes
2 answers
2k views

Where is the about:config box in Thunderbird 17?

Where is the about:config box in Thunderbird 17? I have looked under the Tools Menu and it doesn't seem to be there. Is there a way to bring up a URL box in Thunderbird I don't know about?
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10 votes
2 answers
19k views

What are all the about: pages of Mozilla Firefox? [duplicate]

Possible Duplicate: Reference for all “about”/“chrome” address bar strings for Firefox and Chrome I know about:home, about:robots, about:config and some others, but is there somewhere a list of ...
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  • 1,119
0 votes
1 answer
152 views

How do I make firefox's pagedown just go to the next page

I'm running Debian on a 400MHz machine, so everything's quite slow. When I press PgDn, I see two or three flashes of what the page should look like as it's scrolling down to the next page (I assume ...
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1 vote
2 answers
2k views

How to remove a about:config entry on Firefox?

When trying to activate Webgl on Firefox, I misspelled "Webgl" and wrote "Weblg". I tried to remove it from about:config with delete key or seeing right mouse click options on it, but without success....
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  • 5,147
0 votes
1 answer
221 views

Adding newlines in Thunderbird config editor?

How can I add newlines to values in Thunderbird's config editor? I ask because in the latest update, with reply_on_top set to 1, there is no additional line break added before the quoted message, and ...
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  • 3,367
1 vote
1 answer
484 views

16.5 Font Size in Firefox

I'm using Bitstream Vera Sans as the sans-serif font in Firefox 11.0 beta for Windows 7 x64. There is a drastic jump in size from 16(pt?) to 17(pt?), to the point where 16 is barely legible, and 17 ...
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  • 103
2 votes
3 answers
2k views

Scrolling horizontally with a regular mouse on Firefox 8

Sorry for my poor English (I'm learning it). I've searched on Google and on Super User any way to configure Firefox 8 to scroll horizontally with a regular mouse (2 buttons + scroll wheel), but I ...
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4 votes
2 answers
353 views

How to prevent Firefox from closing when app tabs are open?

Is there any way, via about:config or otherwise, to prevent Firefox from closing when app tabs are open? I'm using Firefox 5.0.1 and 8.0a1 nightly.
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  • 371
2 votes
4 answers
1k views

Stop Firefox from opening Add-ons dialog after every update?

Every time I install or update an add-on, Firefox then pops open the add-ons dialog after the next time the browser starts. I have never ever had a use for this, it's just another popup window for me ...
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  • 5,238
3 votes
1 answer
738 views

How to stop firefox from mangling domain names?

When I type in http://example/ firefox rewites the url to http://www.example.com/. Is there any way to fix this behavior without recompiling firefox? I suspect something in about:config will help, ...
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  • 484
1 vote
1 answer
65 views

Is there a website for redirecting to odd protocols from http? [closed]

For instance, if you click a URL with the apt: protocol in Ubuntu, it will install a package from your repository: Install firefox As you can see, this doesn't work on StackExchange, despite the URL ...
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  • 7,245
3 votes
2 answers
9k views

Re-enable animated GIF display in Firefox?

I'm using Firefox 2.0.0.17. I had disabled image looping (GIF animation) so that images only looped once. Now I want to turn the default looping behavior back on, so I reset image.animation_mode back ...
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3 votes
3 answers
7k views

How would I go about modifying Firefox's about:config settings via an external .bat file?

I would like to change the value of a particular about:config property via a script external to Firefox. Have any of you tried this before? I've read that you can modify "prefs.js", but I was ...
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2 votes
3 answers
8k views

Firefox Download limit

I know you can queue up all the downloads in firefox and if you keep adding them, they just keep downloading. I know I can pause a download and let one finish and then start the other one. But is ...
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