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As webdeveloper : how can i ask canvas usage before using it ?

Firefox allow to disable access to canvas for lowering fingerprinting, it's cool ! But as web developer : i like to ask this access before try to using it, Something like… (read more)

Firefox allow to disable access to canvas for lowering fingerprinting, it's cool !

But as web developer : i like to ask this access before try to using it,

Something like :

1. Do you alllow canvas ? 2. Show the browser part 3. Wait for user answer 4. It's OK : download PDF done with canvass 5. It's not OK : shown an error to user.

To avoid such situation (see screencast)

Asked by Shnoulle 1 week ago

Answered by Shnoulle 5 days ago

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Blank pdfs

For some reason, whenever I load a pdf from within Firefox, I get a new tab with the regular toolbar displayed on top of pdf files, but the document itself is completely … (read more)

For some reason, whenever I load a pdf from within Firefox, I get a new tab with the regular toolbar displayed on top of pdf files, but the document itself is completely blank (see attached screenshot). This issue just started today and I assume it was a result of an update, since I don't recall making any changes to my settings (I'm using Firefox 101.0.1 on Ubuntu 20.04).

I've tried opening multiple files from a variety of sites with the same result. All of them open fine using my system's pdf viewer, as well as from within Chromium. I've tried disabling my plugins, putting Firefox into safe mode and resetting all the handlers, to no avail. Any help would be much appreciated.

Asked by jesse20 1 week ago

Answered by jesse20 6 days ago

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[LINUX][NON-WINDOWS][ONLY REPRODUCABLE ON LINUX] Sessionstore variables for OS restart don't do anything

browser.sessionstore.resuming_after_OS_restart = false. My browser still restores on os restart. Startup -> Restore previous windows and tabs is unchecked browser.sess… (read more)

browser.sessionstore.resuming_after_OS_restart = false. My browser still restores on os restart. Startup -> Restore previous windows and tabs is unchecked browser.sessionstore.max_resumed_crashes = 0 browser.sessionstore.restore_on_demand = false browser.sessionstore.resume_from_crash = false

I do not and will not manually close my browser session every time I want to shut down my computer in order to get it to do what it's supposed to. Linux sends SIGTERM to all running processes on shutdown. Firefox isn't handling this correctly, obviously, because if it was, then my settings would be getting respected. SIGTERM is the standard signal sent to windows that need to close gracefully and are expected to still be functional.

NOTE: Do not provide windows-specific support to this thread. I am not running firefox on windows, and I do not possess a windows computer or license.

Asked by ctrentsj 4 days ago

Answered by jscher2000 - Support Volunteer 3 days ago

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Security certificate problem with Mozilla server ? Can't access website.

I cannot access Mozilla via Firefox - issue arose when trying to access add-ons yesterday (25 Jan 2020). Firefox displays the following: "Secure Connection Failed An err… (read more)

I cannot access Mozilla via Firefox - issue arose when trying to access add-ons yesterday (25 Jan 2020). Firefox displays the following: "Secure Connection Failed

An error occurred during a connection to addons.mozilla.org. PR_END_OF_FILE_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the web site owners to inform them of this problem."

In order to post this, I have had to access the site via Chromium, which also noted a secure connection error. I have used a VPN add-on to secure the connection and access the site.

I assume this is an issue on the Mozilla server with an expired certificate?

Asked by Ellinas 2 years ago

Answered by Ellinas 2 years ago

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How can I prevent ctrl+q from closing the browser?

When I click ctrl+q by mistake, the browser window with all its tabs is closed immediately, with no warning. This has already made me lose data. is there a way to disable… (read more)

When I click ctrl+q by mistake, the browser window with all its tabs is closed immediately, with no warning. This has already made me lose data. is there a way to disable this keyboard shortcut?

Asked by Erel Segal-Halevi 2 years ago

Answered by Ruba 2 years ago

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How to hide all tabs in one or more containers

https://support.mozilla.org/en-US/kb/containers seems to suggests that it's possible to hide all tabs in certain containers, but does not explain how to do that. "Hide an… (read more)

https://support.mozilla.org/en-US/kb/containers seems to suggests that it's possible to hide all tabs in certain containers, but does not explain how to do that.

"Hide and Show: Assume you use your browser for both Work and Personal tasks. When you come home at the end of the day, you don’t want to be thinking about “Work” anymore, but your browser is full of Work tabs. You can “Hide” your Work tabs and proceed with your Personal tasks. Then the next day, when you are back at work, you can “Hide” your Personal tabs and “Show” your Work tabs."

On an aside, I'm also getting pretty confused between collections (mobile), containers (desktop), sessions, tab groups, etc... they all seem to have overlapping but different functionality.

Asked by chrisvdb 2 years ago

Answered by RobertJ 2 years ago

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Videos won't play in Nightly

I installed Nightly hoping to be able to play videos. It worked for a while but has recently stopped. I have a screen shot with the error and the version of nightly. I… (read more)

I installed Nightly hoping to be able to play videos. It worked for a while but has recently stopped. I have a screen shot with the error and the version of nightly. I am running Fedora 64 bit with the updates installed.

Asked by vhradice 2 years ago

Answered by vhradice 2 years ago

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How to restore address bar behavior and line height in 75.0?

Firefox 75.0 has just been released. Address bar has been ruined with dynamic size and lines with increased height. For some unknown reason Mozilla developers think that … (read more)

Firefox 75.0 has just been released. Address bar has been ruined with dynamic size and lines with increased height. For some unknown reason Mozilla developers think that taking away more vertical space will help their browser have "Focused, clean search experience that's optimized for smaller laptop screens" as they state in the release notes. Outrageous.

Now tell me how to go back to the old behavior.

I want a full horizontal length search result widget as it was before.

I DO NOT want an ENLARGED address bar while searching. Simply annoying that it changes its size and looks like popping out from the upper top toolbar every damn time I type something into it.

I want the ORIGINAL LINE HEIGHT of search results in the expanded address bar.

I want an address bar that doesn't expand when focused with Alt+D, like the old one.

I haven't found an about:config option to restore old behavior. However, a userChrome.css workaround is still good for me.

Asked by highbaser 2 years ago

Answered by elched 2 years ago

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How to disable "single click selects all" in new QuantumBar?

In the past I was able to set the setting ``` browser.urlbar.clickSelectsAll browser.urlbar.doubleClickSelectsAll ``` to disable that a single click into the address bar … (read more)

In the past I was able to set the setting ``` browser.urlbar.clickSelectsAll browser.urlbar.doubleClickSelectsAll ``` to disable that a single click into the address bar selects the whole url. Is it possible to achieve this with the new QuantumBar somehow?

Asked by Nils 2 years ago

Answered by McCoy 2 years ago

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Can't Undo permanent private browsing...?

I was messing around with Privacy & Security settings. Under Cookies & Site Data, I checked Delete Cookies & Site Data when Firefox closes. I've decided I d… (read more)

I was messing around with Privacy & Security settings. Under Cookies & Site Data, I checked Delete Cookies & Site Data when Firefox closes. I've decided I don't like it and want to uncheck it. But now it's greyed out and I can't find any way to change it back. It says I'm in permanent private browsing mode. There MUST be a way to change this back to how it was! What is it???

Asked by BlueAZ 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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I can't open a Spotify URI from Firefox

I can't open a Spotify URI from Firefox But I can open it from command line using the --uri option. As in, this works fine from the terminal: spotify --uri="spotify:ar… (read more)

I can't open a Spotify URI from Firefox But I can open it from command line using the --uri option. As in, this works fine from the terminal:

spotify --uri="spotify:artist:6OqhFYFJDnBBHas02HopPT"

and whatever Firefox is doing just launches Spotify without navigating to the thing indicated by the URI

Is there, perchance, a simple file edit I can do that will fix this for me?

Asked by patrickmcgorrill 2 years ago

Answered by patrickmcgorrill 2 years ago

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Firefox doesn't support HTML5 while other Browsers do. Latest Ubuntu 20.04. LTS

So the problem is that Firefox doesn't play any HTML5 content. Weirdly except for Youtube. Youtube works just fine. But every other Website shows errors. Even songsterr.c… (read more)

So the problem is that Firefox doesn't play any HTML5 content. Weirdly except for Youtube. Youtube works just fine. But every other Website shows errors. Even songsterr.com. I'm using latest Firefox 76.0.1 on a recent Ubuntu 20. 04 LTS installation. Usual troubleshooting like updates doesnt work because "sudo apt-get upgrade" doesn't find any updates. I tried the same websites in the latest version of Chromium and they work perfectly fine. I couldn't find a mistake in the firefox settings or something so I'm confused. Disabling Plugins didn't change anything and turning of tracking protection didn't either. What is the Problem here and how can I solve it?

Asked by wauwufflp 2 years ago

Answered by cor-el 2 years ago

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Unable to connect to government site

I am unable to connect to the following URL https://lakmshaegov01.msha.gov/UserManagement/ChangePassword.aspx. All other browsers seem to work. I ran an SSL Labs test and… (read more)

I am unable to connect to the following URL https://lakmshaegov01.msha.gov/UserManagement/ChangePassword.aspx. All other browsers seem to work.

I ran an SSL Labs test and it confirms that all tested versions of Firefox fail. I would like to know if anyone can spot something that might allow me to connect by temporarily relaxing the security checks in Firefox for this site.

Asked by tom.propst 2 years ago

Answered by tom.propst 1 year ago

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Add ons not working or showing up

I am running Firefox 76.0.1 on GalliumOS 3.1 on a Lenovo N21. For some reason, my add ons don't show up or work, even though they are installed. Firefox works great on … (read more)

I am running Firefox 76.0.1 on GalliumOS 3.1 on a Lenovo N21. For some reason, my add ons don't show up or work, even though they are installed. Firefox works great on my other two machines, and used to work great on this one. Thank you Jason Stone.

Asked by jasonstone20 2 years ago

Answered by AKASH kUMAR 2 years ago

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VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found for this media on WSHH

When I try to watch a video on WSHH, I get this error VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found for this media. I have DuckDuckG… (read more)

When I try to watch a video on WSHH, I get this error VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) No compatible source was found for this media. I have DuckDuckGo Privacy Essencials installed, and I also have uBlock Origin installed. I disable both extensions but I still see the same error. I'm on Ubuntu 20.04 LTS, and my Firefox version is 77.0.1 (64-bit) canonical - 1.0

I attach the console log.

Asked by cunha-filipe 2 years ago

Answered by cor-el 2 years ago

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Why isn't DuckDuckGo, Startpage, Searx, etc. Default search engine?

Hello SUMO Team! I always had this question but never really asked it. Why isn't DuckDuckGo or a more privacy based Search engine set as default? You even have to manua… (read more)

Hello SUMO Team!

  I always had this question but never really asked it. Why isn't DuckDuckGo or a more privacy based Search engine set as default? You even have to manually add Startpage and others... 

 It just hurts me how a privacy browser has the Google search engine as default after all, most people come to Firefox for privacy and Google is the opposite. Maybe one of the developers can change that?

Thank you so much for trying to help me and Stay Safe!

Asked by Tommy 2 years ago

Answered by McCoy 2 years ago

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How do I disable the blue flash when a tab finished loading?

How do I disable the blue flash when a tab finishes loading? I'd like to suggest an option in a future release that disables all these things. I find it a real distractio… (read more)

How do I disable the blue flash when a tab finishes loading? I'd like to suggest an option in a future release that disables all these things.

I find it a real distraction, and it's really putting me off using firefox as a broswer. I really don't think this sort of eye candy is needed in order to browse the internet.

Asked by useruser 2 years ago

Answered by jscher2000 - Support Volunteer 2 years ago

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Cannot sign in to Firefox account when VPN is active

Hi, I'm not able to to sign in to my Firefox account when my VPN is active. Is there anything I can do about it? Any help is very much appreciated! Thank you! … (read more)

Hi,

I'm not able to to sign in to my Firefox account when my VPN is active. Is there anything I can do about it?

Any help is very much appreciated! Thank you!

Asked by thw24 2 years ago

Answered by schnrl 2 years ago

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Using Mozilla.cfg to focus a custom new tab page

Hi everyone, I am having trouble getting my custom new tab page to be focused when opened (instead of the address bar). I am currently using the `autoconfig.js` + `mozill… (read more)

Hi everyone,

I am having trouble getting my custom new tab page to be focused when opened (instead of the address bar).

I am currently using the `autoconfig.js` + `mozilla.cfg` approach to overriding the `AboutNewTab.jsm` service with a custom local file. This is working great with the two files containing this code:

autoconfig.js: ``` pref("general.config.filename", "mozilla.cfg"); pref("general.config.obscure_value", 0); ```

mozilla.cfg: ``` // Custom firefox config

let { classes:Cc, interfaces:Ci, utils:Cu } = Components;

try {

 Cu.import("resource:///modules/AboutNewTab.jsm");
 let newTabURL = "file:///home/vallode/Documents/test/index.html";
 AboutNewTab.newTabURL = newTabURL;

} catch(e) { Cu.reportError(e); } ```

I have been attempting to use the `gBrowser` global to add an event listener to the new tab opening, but with no success. Could anyone point me in the right direction for something like this?

Asked by Vallode 2 years ago

Answered by Vallode 1 year ago

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Linux, .desktop files, Sites in App Mode

Hello, all... I'm running Solus 4.1 with the 5.6.18-155 kernel on my Asus UX330UAR and Firefox Nightly 79.0a1 (2020-06-26) (64-bit). Currently, I used Android Messages fo… (read more)

Hello, all...

I'm running Solus 4.1 with the 5.6.18-155 kernel on my Asus UX330UAR and Firefox Nightly 79.0a1 (2020-06-26) (64-bit). Currently, I used Android Messages for Web via a "webapp" in Brave and am provided a "desktop icon" for that window; however, I'd much rather use my default Firefox and just discovered the "browser.ssb.enabled" setting.

The "trouble" is doing so does not provide any icon to launch by itself; that is, I must be already in Firefox to use the "App Mode."

Any ideas on how to accomplish this dream?

Thanks for any ideas!

Asked by Bryan Moore 2 years ago

Answered by cor-el 2 years ago