LibreWolf

I just added a link to to my blog's RSS feed in the blog index page, and Librewolf now has a Reader View button for that page, which seems to let people read RSS entries instead of the normal HTML pages. The reader view also includes read time estimates. The index is about one minute, and an entry i clicked says 2-3. Where does this estimate come from?

In my userChrome.css file, I have the following so I can have a "compact view" of bookmarks, menus, etc.:

:root{ --arrowpanel-menuitem-padding-block: 2px !important;}

The Sidebar still displays bookmarks, history, & synced tabs "compactly", but the items on the hamburger menu and in the folders on my bookmarks toolbar are given "Normal" (spacey) density. Any way I can fix this?

I am trying to connect to a .local website, and LibreWolf says it can't connect to server (one of the worst UX error pages I've seen). Google and DDG are of no help, and I do not want to resort to using another browser for something that should be simple to disable.

I have added my domain to network.dns.localDomains and that did not appear to work. I have "DNS over HTTPS" disabled completely. I do not know what else to try.

Please help.

I can't update LibreWolf on Fedora because the signing key seems to be revoked.

I get this when I run sudo dnf upgrade librewolf:

--------------------------------------------------------------------------------
[2/2] Total                             100% |   0.0   B/s |   0.0   B |  00m00s
Transaction failed: Signature verification failed.
Public key "https://repo.librewolf.net/pubkey.gpg" is already present, not importing.
OpenPGP check for package "librewolf-150.0.3-1.x86_64" (/var/cache/libdnf5/librewolf-d3659b612308432a/packages/librewolf-150.0.3-1-linux-x86_64-rpm.rpm) from repo "librewolf" has failed: Public key is not installed.

Then I tried importing the key manually from https://repo.librewolf.net/pubkey.gpg:

$ sudo rpmkeys --import pubkey.gpg 
warning: Certificate 40339DD82B12EF16:
  Subkey 8A74EAAF89C17944 was revoked: No reason specified

I could disable the signature check, but I'm worried now.

gpg --show-keys pubkey.gpg shows this:

pub   rsa4096 2022-05-14 [SC]
      662E3CDD6FE329002D0CA5BB40339DD82B12EF16
uid                      LibreWolf Maintainers <gpg@librewolf.net>
sub   ed25519 2026-04-25 [S]
sub   ed25519 2026-04-25 [S]
sub   rsa4096 2022-05-14 [S]
sub   rsa4096 2022-05-14 [E]
sub   rsa4096 2022-05-14 [S] [revoked: 2026-04-25]

I think I did some updates since April 25th. I don't understand why it doesn't work now.

https://codeberg.org/librewolf/bsys6/releases

Hi! How do I disable search with the address bar?

When I type things in the address bar, I want it resolved as a URL and never sent to a search engine. (If I do want to search something, I prefer to use the bar on the right.)

How can I achieve this in LibreWolf?

UPDATE: solution by @hobata below works. You need to set keyword.enabled to false in about:config. Or you need to create a file ~/.librewolf/librewolf.overrides.cfg and write defaultPref("keyword.enabled", false); in it.

Despite disabling most of Mozilla's telemetry and other phone-home functionality (such as captive portal), I found that a fresh LibreWolf profile makes quite a few connections on first startup (see list below), and some repeating every startup. One in particular is persistent: that is to push.services.mozilla.com and can be disabled by setting the dom.push.enabled configuration to false (I personally don't need push notifications in the browser; you can also set a custom URL).

What is particularly annoying is that some of these domains, related to "remote settings", are essentially hard-coded and cannot be disabled by changing configuration parameters. I now block these three in my /etc/hosts file.

firefox.settings.services.mozilla.com
firefox-settings-attachments.cdn.mozilla.net
content-signature-2.cdn.mozilla.net

Helpfully Mozilla lists domain to allow so you can find more domains to potentially block.

Here is the list of domains LibreWolf connected to at startup of a fresh profile. Some are understandable, some less so.

addons.mozilla.org
firefox.settings.services.mozilla.com
firefox-settings-attachments.cdn.mozilla.net
content-signature-2.cdn.mozilla.net
services.addons.mozilla.org
gitlab.com
push.services.mozilla.com
ublockorigin.github.io
malware-filter.gitlab.io
raw.githubusercontent.com
pgl.yoyo.org
curbengh.github.io
malware-filter.pages.dev
cdn.statically.io
versioncheck-bg.addons.mozilla.org
cdn.jsdelivr.net
ublockorigin.pages.dev
publicsuffix.org
codeberg.org

Now that LibreWolf lives in .config/librewolf/librewolf, I can't seem to get KeePassXC to acknowledge the location of the native messaging hosts json file in .config/librewolf/librewolf, even if I change the location in the Browser Integration/Advanced settings in KP, it always creates a .mozilla folder no matter what I do and only uses the json file from that location.

Hi everyone: I started recently to use Librewolf. I know that its better to avoid installing extensions and using dark themes in order to not be exposed to fingerprinting. But what about using the command xcalib -i -a on linux to invert the screen colors and thus achieving the dark theme. Would this information also be leaked to the websites? and how I can check this eventually?

Every then and now I need to use Google because of its better local results (so I also disable VPN) and I always fell into captcha hell (no acc, no cookies...), but it has been some time already Google don't bother me with captchas... have I been successfully fingerprinted or something?

What shows up is this pattern of flashing cyan, yellow, and magenta lines on a white background.

I kind of want to have resist fingerprinting turned on if I can. Is there someway to add special exemptions for certain sites?

My webcam has has a separate IR camera on it for focusing (I think) perhaps Librewolf is choosing the wrong one?

Firefox 144 features a new profile switcher, which is a lot nicer than about:profile or a desktop shortcut to open the profile prompt.

However, Librewolf seems to have deactivated it because it's behind the Firefox account button.

Will it be fixed? I use profiles on all my devices, and I'm quite tired of always going to about profile just to open another one