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Firefox PDF reader pdfjs.viewerCssTheme option has no effect

So I wanted to read PDFs trough firefox with a dark theme, looked up how to do so online, and people say to change the "about:config" option "pdfjs.viewerCssTheme" to "2"… (funda kabanzi)

So I wanted to read PDFs trough firefox with a dark theme, looked up how to do so online, and people say to change the "about:config" option "pdfjs.viewerCssTheme" to "2" instead of "0", I did that, tried opening a PDF, nothing happend, it was still black text on white backgrounds. Tried closing firefox, reopened the pdf, nothing happened, still white backgrounds. Tried to check if it might have to do with that specific pdf file's config, created my own PDF file from a word document, tried to open it, still white backgrounds. Tried disabling extensions, (which I use four of, UBlock Origin, SponsporBlock, Return Youtube Dislike and Translate this page), didn't work. Tried enabling the option on my laptop, didn't work. Tried a bunch of other stuff and it still won't work. My Firefox version is 109 and I'm using Windows 10 I also don't want to use the console/file edit thing with grayscale(1) invertcolor(1) or whatever it was since it also reverses the colors of images instead of just the backgrounda nd text color.

Asked by oliveira.frederic1 1 unyaka odlule

Answered by cor-el 1 unyaka odlule

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Websites do not display correctly on Linux

Good morning, I have strange issue. Websites on my Manjaro Linux (GNOME desktop enviroment, using Wayland and Xorg) are not displaying correctly. Sometimes there are whit… (funda kabanzi)

Good morning, I have strange issue. Websites on my Manjaro Linux (GNOME desktop enviroment, using Wayland and Xorg) are not displaying correctly. Sometimes there are white fonts on white background-color, sometimes black fonts on black background. Sometimes where the bg should be white, it is black. I have Firefox Sync between my firefox browser on Windows 11 and Manjaro. Every setting in both browsers are the same. I tried to follow the instructions, like removing history, cache, cookies, turning off hardware acceleration etc. I just have no idea what to do now.

Asked by DerekTDR 1 unyaka odlule

Answered by Mich 1 unyaka odlule

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On playing online videos screen flashes, goes blank until site / video is closed

So, for awhile now when I go to some sites, the screen suddenly starts flashing, then it jitters and turns some light color (like a light green; not blue screen, not blac… (funda kabanzi)

So, for awhile now when I go to some sites, the screen suddenly starts flashing, then it jitters and turns some light color (like a light green; not blue screen, not black). If I guess where the "X" is to shut down the tab that has the video, I can end this. Often, like on youtube, I find the problem is some ad video that was playing. The rest of the site is ok. But not always.

One site I wrote down a few days where it happened: https://www.nbcsports.com/philadelphia/eagles/eagles-face-giants-2022-playoff-opener?cid=sm_npd_rsn_phi_fb_mn&fbclid=IwAR3rGUEa0W8fElrzCWANSIUpti9VKlbn0iHyvcFsviajYExo5tcRSyWBJXA

scroll down to video and everything blinks, becomes unuseable

It happens in lots of places, though. It is not per se a YouTube problem or just a problem at NBCSports. I shell out to MS Edge, and it seems to handle everything fine, so I'm assuming at this point it is a browser issue.

One last point: after this happen the screen display is degraded even after I manage to shut down the offending tab or video. It takes a Log off/log back in or reboot to fix everything. The degradation takes the form of making the screen look a bit like a pointilist painting, although that's an exaggeration.

FF 109.0.1 64 bit Windows 11 NVidia GeFORCE RTX 3060 running studio driver 526.98 (I have switched periodically from / to their gaming driver, which doesn't seem to matter)

Any help, appreciated.

Asked by monsieurms 1 unyaka odlule

Answered by cor-el 1 unyaka odlule

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Can't Block Autoplay

I've blocked Autoplay (Audio & Video) for *all* Web sites via the settings menu, but videos still continue to play automatically (abcnews.go.com, for instance). I we… (funda kabanzi)

I've blocked Autoplay (Audio & Video) for *all* Web sites via the settings menu, but videos still continue to play automatically (abcnews.go.com, for instance).

I went to config:about, and made all the suggested changes I found in Mozilla support. Autoplay seems to be blocked now, but at the expense of Firefox going into an endless loop trying to load and play videos. While in this loop, Firefox is eating up 20% of my CPU sources, which comes to close to making my PC unusable.

I have Firefox 109.0.1, 64-bit.

This has been a chronic problem ever since I've used Firefox. Someone needs to take a MUCH deeper dive into why we can't block autoplay.

Asked by upom123 1 unyaka odlule

Answered by upom123 1 unyaka odlule

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BOOKMARK TOOLBAR NOT SHOWING

WHERE IS MY BOOKMARKS TOOLBAR??? Every time I update Firefox (now 109), I end up with all kinds of problems! NOW, I can't see my bookmark toolbar. All the help articles … (funda kabanzi)

WHERE IS MY BOOKMARKS TOOLBAR??? Every time I update Firefox (now 109), I end up with all kinds of problems! NOW, I can't see my bookmark toolbar. All the help articles tells me how to show it or how to bookmark a page, which I already did multiple times. But this issue is never solved. If I can't get this resolved, I'm going to MS Edge.

Asked by Laura 1 unyaka odlule

Answered by Laura 1 unyaka odlule

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Restore Session odd behavior in Windows 11

I found a really unusual behavior. If I close Firefox using the "x" at the top right of the window, the Windows default for close, it does not restore session no matter… (funda kabanzi)

I found a really unusual behavior.

If I close Firefox using the "x" at the top right of the window, the Windows default for close, it does not restore session no matter what I do. I can manually go to the settings, history, recently closed windows, and restore them from there, of course - but that is a definitive hassle.

Strangely, even if I open up a new tab less than 2 seconds before I hit the X to close, it will not restore the session but does indeed save the new tab to the previous.jsonlz4 file, and makes that available via going through the settings menu.

What is oddly more unusual is that if I close Firefox by way of ctrl-shift-q, it works fine (opening Firefox after ctrl-shift-q restores the session without any extra intervention required).

How do I make Firefox recognize closing via the bog-standard-since-windows-3.11-for-workgroups X in the top right of the window as properly closing/quitting?

Asked by verahsa 1 unyaka odlule

Answered by jscher2000 - Support Volunteer 1 unyaka odlule

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Hiding Extensions from the Toolbar

My extensions take up a lot of space in my toolbar and I'd love to hide all of them. However - every 'solution' to the problem tells me to right click the extension strai… (funda kabanzi)

My extensions take up a lot of space in my toolbar and I'd love to hide all of them. However - every 'solution' to the problem tells me to right click the extension straight from the toolbar and click 'Hide from Toolbar'.

I do remember this option existing, however I couldn't find it since last update and I'm assuming it was removed. Is there any way to use it again?

^ (Small note, It would also be lovely if I could add them to the Extensions add-on in the toolbar, as that would really be a better use for it other than overflow)

Asked by Attack 1 unyaka odlule

Answered by Attack 1 unyaka odlule

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time stamp

on other browsers I was able to go to history and see at what time of day I viewed a certain web site. Is that function on Firefox? This came in very handy so Please add … (funda kabanzi)

on other browsers I was able to go to history and see at what time of day I viewed a certain web site. Is that function on Firefox? This came in very handy so Please add this function! Thanks!

Mike [email removed from public]

Asked by guitarlessonsonline 1 unyaka odlule

Answered by guitarlessonsonline 1 unyaka odlule

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New update has broken overflow menu and bookmarks bar

So this crazy new update has broken my Firefox in these ways: 1. All my bookmarks on my bookmarks bar have been deleted. 2. I can't drag any new links to the bookmarks b… (funda kabanzi)

So this crazy new update has broken my Firefox in these ways:

1. All my bookmarks on my bookmarks bar have been deleted. 2. I can't drag any new links to the bookmarks bar 3. Overflow menu for apps is empty and will only let me drag Firefox defaults to it such as settings. Dragging apps to it is impossible. It "is" possible to pin items by using the Chrome puzzle piece..

Firefox: 109.0 OS: Windows 10 Pro

Using troubleshooting mode has no effect.

Asked by RedXIII 1 unyaka odlule

Answered by RedXIII 1 unyaka odlule

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Deleting separator lines (here I go again)

I asked this a couple of years ago - ! But the problem apparently is BAAAAACCCKKKK..... In my list of bookmarks I have inserted SEPARATOR lines. I cannot find how… (funda kabanzi)

I asked this a couple of years ago - ! But the problem apparently is BAAAAACCCKKKK.....

In my list of bookmarks I have inserted SEPARATOR lines. I cannot find how to delete a separator line. There doesn't seem to be any up to date information online about how to handle this - can someone help?

In the previous fix I would click the three-line icon at top right and to into MANAGING BOOKMARKS, where there was a way to see the list, and I could click on and delete any separator lines I wanted to remove.

Apparently in the newest version of FF this no longer works. Now when I go to Manage Bookmarks, there is a list of my bookmarks, but I don't see any of the separator lines.

I'd be truly grateful for help - thank you in advance.

Asked by timestreasures 1 unyaka odlule

Answered by cor-el 1 unyaka odlule

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Can't setup Dropbox in Firefox

I tried to Connect Dropbox to my desktop, but the page would not load. Chrome has no problem loading the page. Could someone please let me know if they have the same … (funda kabanzi)

I tried to Connect Dropbox to my desktop, but the page would not load.

Chrome has no problem loading the page.

Could someone please let me know if they have the same problem

Asked by noel_envode 1 unyaka odlule

Answered by noel_envode 1 unyaka odlule

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Downloads auto-save when I don't want them to

Every time I come across a file and click the link to either open or save the file, Firefox just downloads the file -- THEN it asks me if I want to open it or save it..? … (funda kabanzi)

Every time I come across a file and click the link to either open or save the file, Firefox just downloads the file -- THEN it asks me if I want to open it or save it..? It's bugged and an obscene security threat if the browser is so easily willing to download files against my intention.

Before I'm asked, I have gone through the settings multiple times to ensure 'Always ask you where to save files' and 'Ask whether to open or save files" are checked. Behavior does not change according to settings.

Example 1. Click link for a PDF with the intention to open, read, and forget 2. Firefox automatically downloads the file to my download folder 3. Firefox prompts me if I want to save the file or open it

If I click 'open', the file stays in the saved location even though I don't want it to exist.

Asked by A name 1 unyaka odlule

Answered by jscher2000 - Support Volunteer 1 unyaka odlule

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My Firefox is broken.

When I open Firefox it's just a black page and anything I click on isn't responsive. I can't go into options or anything. Sometimes Firefox doesn't even load. It worked f… (funda kabanzi)

When I open Firefox it's just a black page and anything I click on isn't responsive. I can't go into options or anything. Sometimes Firefox doesn't even load. It worked fine earlier than all of a sudden It stopped working today. Web pages don't load. Nothing works

I seen a post earlier that had a link to a supposed fix but I couldn't figure it out. So if anybody is able to help me it would be much appreciated. I am not an advanced user when it comes to Firefox

Asked by extraordinarycj 1 unyaka odlule

Answered by extraordinarycj 1 unyaka odlule

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firefox taking up to much memory, did some things that didn't work

so, my computer is getting old, and because of that, it's slowing then. Firefox isn't helping much because it uses too many processes and memory. i tried deleting some ex… (funda kabanzi)

so, my computer is getting old, and because of that, it's slowing then. Firefox isn't helping much because it uses too many processes and memory. i tried deleting some extensions, I tried using task manager to close separate processes but i always end closing the wrong one and closing firefox completely i tried going to dom.ipc.processCount and change the count to 1. I'm so confused, it's slowing down my games i play.

Asked by collinsmarcus69 1 unyaka odlule

Answered by collinsmarcus69 1 unyaka odlule

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Firefox not working correctly with new Wikipedia as of 1/22/23

In the past, going to Wikipedia in Firefox automatically opened a search box to type in a search term. However, with the recently updated Wikipedia interface, Firefox no… (funda kabanzi)

In the past, going to Wikipedia in Firefox automatically opened a search box to type in a search term. However, with the recently updated Wikipedia interface, Firefox no long opens a search box, so the user must: (a) stop typing (b) grab a mouse (c) click on the magnifying glass icon just to enter a search term. To demonstrate this, please go to https://en.wikipedia.org/wiki/Main_Page and you will see there is no search box and you have to manually open the search box.

However, this works perfectly in Chrome. Going to https://en.wikipedia.org/wiki/Main_Page automatically opens a search field to easily type into.

Will Firefox be updated to allow immediate access to search field in Wiki? Please see attached .png file and thank you for listening! CW

Asked by cwrecords 1 unyaka odlule

Answered by cwrecords 1 unyaka odlule

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Installation aborted because the add-on appears to be corrupt.

https://addons.mozilla.org/en-US/firefox/addon/lightorange-on-black/ there seems to be a problem with this theme, cant install, cant upload or anything it says its corrup… (funda kabanzi)

https://addons.mozilla.org/en-US/firefox/addon/lightorange-on-black/ there seems to be a problem with this theme, cant install, cant upload or anything it says its corrupted can someone help? please contact me under my email [email removed from public]

Asked by Farzam Maghouli 1 unyaka odlule

Answered by Farzam Maghouli 1 unyaka odlule

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Certificates - Certificate Authority Managers - Builtin Object Tokens and Software Security Devices - some expired

Hello, There is a very long list of these that are associated with my account. I've imported my Firefox settings from computer to computer for at least twenty years. I… (funda kabanzi)

Hello,

There is a very long list of these that are associated with my account. I've imported my Firefox settings from computer to computer for at least twenty years. I may have made mistakes that caused me to pick up malware, and want to fix this, and some of these certificates have expired.

How do I know what to keep and what to either delete or edit trust regarding?

Is there any way to quickly and easily have all of them assessed at once?

Thanks very much!

Sally

Asked by Miami Sally 1 unyaka odlule

Answered by cor-el 1 unyaka odlule

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OS authentication enable via registry?

Hi, I know how to turn on OS authentication to reveal passwords in about:config (signon.management.page.os-auth.enabled = true) But is there any way to turn this on in r… (funda kabanzi)

Hi,

I know how to turn on OS authentication to reveal passwords in about:config (signon.management.page.os-auth.enabled = true) But is there any way to turn this on in registry?

Asked by jewmo159 1 unyaka odlule

Answered by TyDraniu 1 unyaka odlule

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No Prompts for Microphone permission

Hello, when I'm on a website that could use my microphone or camera, I am not getting the prompt to ask for permission to use them. I have tried manualy giving the websit… (funda kabanzi)

Hello, when I'm on a website that could use my microphone or camera, I am not getting the prompt to ask for permission to use them. I have tried manualy giving the website permission in CTRL-I website settings. But that did not fix it. I have tried the same websites in google chrome, and my mic works then.

Asked by hendleyjon 1 unyaka odlule

Answered by hendleyjon 1 unyaka odlule

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Video does not play audio when I try to watch videos through duck duck go

I have tried watching videos through chrome and other browsers by searching something via duck duck go and watching that video on duck duck go, and it works on other brow… (funda kabanzi)

I have tried watching videos through chrome and other browsers by searching something via duck duck go and watching that video on duck duck go, and it works on other browser so it must be specific to firefox.

Whenever I try to watch a video, in the drop down bar firefox select to mute audio for some reason. I then select 'allow audio and video' and refresh the page but the video is still muted for some reason. This also happens when I try to use other video sites. This has only started to happen recently in the past two days (and yes I am updated to the latest version of firefox).

Asked by bluejumper.2914 1 unyaka odlule

Answered by Terry 1 unyaka odlule