I built a firefox addon called comdot which basically lets you visit sites typing a topdown version of a url.

It works fine but i want to show the url displayed in the address bar as topdown too.

Posting here cause i can't find a single good resource about this other than CSSing address bar. It doesn't have to be about addon. If there's any way to do this, including modifying local firefox files, please let me know.

Wanted to switch from Google to Firefox but I can’t find a way to group my tabs. Is it a feature you need to turn on somewhere in settings, or is it not yet available for iPhones with Firefox Version 158.0?

I have an issue with firefox in combination with lightspeed ecom software. Whenever i edit something on a product page, firefox scrolls up. It's very annoying and it's not a lightspeed issue as i tested it with 2 other browsers that don't have this issue. I have been working with firefox for years and this issue occasionally appears, but now it's been days on end.

I have no plugins running and it's the latest clean version of firefox.

Anyone know what might cause this? I tried turning off smooth scrolling but that was not it.

Good job! (no really, fuck amazon)

Guess they didn't like something in the new update, and that is fine with me.

ON MAC

this makes no difference but I was trying to rewatch Manchester By The Sea. Ok. Yeah. 😅

Also is there any way to disable that blue dot appearing after each download?

I like home page improvement now requiring only one tap, but would still prefer to see all my shortcuts directly.

I also like I can now easily swipe those downloads away, but I shouldn't be bothered with the blue dot in the first place.

Like I am thinking to use it only for some video streaming purpose on a specific browser game that consumes a bit lot of internet . I do have windscribe free plan which gives me 10 GB free monthly but the site consumes alot of free VPN just playing it for like 30 mins ended up eating ~500MB . I saw that firefox does offer 50GB of monthly free vpn usage but it mentioned just routing the traffic from fastly and there was a comment which stated its just a web proxy not a VPN (Maybe because its just some browser level tho).

there will be vacations soon and I maybe playing the game to bust out some frustration due to exams and college. tho I don't want to run out of my VPN usage and I don't want my ISP to know my activity either.

Any suggestions are welcomed

Anyway, LanguageTool will become for Premium users only, with obvious artificial writing…

In my Firefox settings I have Autoplay blocked for audio and video, on some websites and particularly Reddit, it overrides my global off setting or bypasses it. And changes it to block audio only, which is most likely the default setting.

Context: Gaming

I often use a multi-window session with tens of tabs which Firefox handles beautifully (!!!) since at least the 2024 changes. But I wouldn't want to have any of it even tickling the CPU while gaming. My question is:

When I don't open Firefox but only fire up the Keep WebApp created while using my main Firefox profile, does it have a bigger performance impact just because it was created during a multi-window session, while logged into my main Firefox profile?

It's driving me a bit nuts, always seing a pop-up of what adress I'm currently on in the split window that is not in focus. Any way to disable this? Didn't find anything in config.

It pretty much grinds my PC to a halt.

https://reddit.com/link/1x835z2/video/goiebar03zvh1/player

Hey everyone!

I've recently noticed that Firefox is using a lot more RAM than it used to. Has anyone else experienced this with any of the latest versions?

I'm running Windows 11 with 16 GB of RAM. I usually visit the same websites and don't have that many tabs open, yet Firefox ends up using around 7–8 GB of RAM. On top of that, I also use Chrome for a few things that work better there, which takes up another 3 GB or so.

I used to have pretty much the same setup and browsing habits without running into this issue. I started noticing the increased memory usage with one of the recent Firefox updates, but I never got around to asking about it here until now.

Has anyone else noticed a similar increase in RAM usage recently? Is this expected, or could something be wrong with my setup?

Thanks!

Why??? what's the point of burying such a useful feature behind so many menus adding friction?

Hi r/firefox! cmplog (Tеlеgram chаnnel) been porting Firefox's engine to Windows 10 Mobile, and it's now usable enough to share. It's called Gecko: a UWP browser built on Gecko from Firefox 155.0.1, running on our phones. Current version: 155.0.1.186.

Edge on W10M is stuck on EdgeHTML 15, and more and more sites simply don't work in it anymore. This is a modern engine, so most of them do again.

What works

- Modern Gecko engine with a JavaScript JIT, plus WebAssembly - GPU rendering (WebRender over Direct3D 11) that redraws only what changed, so heavy sites like the YouTube home page load and scroll fast - Hardware H.264 decoding up to 1080p60, including streaming (Media Source Extensions: YouTube, VK Video). The browser picks H.264 on its own when a site also offers VP9 or AV1 - Video goes straight to the display's hardware overlay when nothing is drawn on top of it, so fullscreen 1080p60 YouTube plays smoothly in portrait and landscape - Frame rate synced to the display, fullscreen video with rotation - Phone clipboard both ways, downloads (Downloads\Gecko or a folder of your choice, "Save as", file uploads) - Hardware back button that does the expected thing: closes the keyboard, menus, dialogs, fullscreen, goes back in the tab, and only then leaves the app - Microphone for WebRTC sites, with the system permission prompt - Sign-in popups (Google, VK, etc.) open as a new tab and return to the site afterwards - Tabs, pinch zoom, readable text on desktop-only pages (font inflation like Firefox for Android) - Discord works after login (it's shown a desktop browser) - Memory management built around the 2 GB address space of a 32-bit process - Firefox telemetry is off

Low-end phones: a hacky GPU path for Direct3D feature level 9_3

Firefox's GPU renderer needs Direct3D 11 at feature level 10 or higher. Low-end phones like the Lumia 650 (Adreno 304) only go up to feature level 9_3, where it simply doesn't start. Normally that means falling back to rendering everything on the CPU, which on a Snapdragon 212 is painfully slow.

So there's a custom in-between path for these phones. Pages are drawn by Firefox's software renderer (SWGL), but the heavy part, shading the pixels, is moved to the GPU: the work goes through pixel shaders the 9_3 hardware can still run, rendered into tiles, and composited by Direct3D 11. Shaders the driver might refuse are probed during idle time, so a refusal doesn't surface in the middle of a frame. Hardware H.264 decoding works at 9_3 too.

This solution helps a lot compared to pure CPU rendering, but a Lumia 650 is still much slower than an Elite x3. The fast paths (direct GPU rendering, the video overlay) need feature level 10+.

1 GB phones: a page file can help

On phones with 1 GB of RAM the system unloads apps that use too much memory, and a browser on YouTube easily takes 400–600 MB. If the browser keeps getting closed on you, enabling a page file gives the system somewhere to put memory and makes that happen less often.

Windows 10 Mobile has no setting for it, but on an interop-unlocked phone it can be turned on in the registry (e.g. with Interop Tools):

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

PagingFiles = "u:\pagefile 1024 1024"

(minimum and maximum size in MB), then reboot. This is a system tweak at your own risk; it costs internal storage space and adds wear to the flash.

What doesn't (yet)

- No DRM video (Netflix and the like): there are no DRM plugins for this platform - VP9/AV1 are software-only, so sites without H.264 won't play well above 360p - Camera in WebRTC hasn't been tested yet (only the microphone has), so no video calls for now - No printing, no Web Speech - No auto-update: new versions are installed as a new package over the old one (your data is kept) - Everything runs in a single process with no sandbox: UWP on the phone doesn't allow child processes - Extensions run on the same thread as pages, so uBlock Origin noticeably slows things down even when switched off from its own menu. Disable it in about:addons if you notice - Very heavy sites like Discord can bump into the address-space limit and stutter

Devices

- HP Elite x3: tested, works well - Lumia 650: tested, runs on the feature level 9_3 path above, but noticeably slow - Lumia 950 / 950 XL, Alcatel Idol 4S, Acer Jade Primo and other Snapdragon 808/810/820 phones with 3 GB RAM: should work reasonably well

Requirements

- Windows 10 Mobile 1703 (15063) or newer, ARM - Interop unlock (the package declares restricted capabilities: code generation for the JIT and broad file-system access for the profile) - The Gecko.cer certificate from the release installed on the phone - At least 1 GB RAM. On YouTube the browser uses 400–600 MB, so on 1 GB phones it will be slow (see the page file note above)

Download & source

- Download:

https://github.com/Computershik73/gecko-w10m/releases/latest

- Source:

https://github.com/Computershik73/gecko-w10m

This is still a beta, so expect rough edges. Bug reports are very welcome. If something crashes, the browser keeps logs (quiet by default, verbose mode can be switched on in its settings), and they help a lot.

Recently firefox automatically updated and now I can't open any of these (photo), like no matter how much I click on them, nothing happens, what's worse is that I can no longer right click on a tab to duplicate, etc. When I right click on tabs nothing happens, no options appear, nothing changes. How can I revert to a previous update and turn off auto update?

Hi as the title I've tried everything to turn autoplay off on Firefox for YouTube (mobile), but the videos continue to play when I lock my phone or swap to a different app. I don't have any extensions aside my one adblock, I've set it to block audio and video autoplay, I've tried using incognito, I've tried swapping to the desktop site via mobile, I've tried blocking it on the app however the app doesn't do this, just through Firefox. Please help, it's driving me insane. Thanks 🙏

In Brave when looking at youtube -> subscription I see at the top:

but in Firefox same page is missing this "Most relevant" section and starts with only the shorts:

Which shows in Brave below that most relevant section screenshot. Being a Firefox dummy I'm sure it's simple.

Thoughts?

Hey all — I've been building browser extensions on Chrome and just got both approved on Firefox Add-ons:

1. **Obsidian Citation Capture** — grabs academic paper metadata and saves it as literature notes directly into your Obsidian vault. Free tier, BYOK for AI features. https://addons.mozilla.org/en-US/firefox/addon/obsidian-citation-capture/

2. **DevTools Fix Assistant** — adds a panel to DevTools that audits your page for form issues, accessibility problems, and runtime errors, with AI-suggested fixes. https://addons.mozilla.org/en-US/firefox/addon/devtools-full-spectrum-asst/

Both are free to try. Would love feedback from Firefox users specifically — let me know if anything feels off compared to the Chrome versions.

So without everything after the third slash.

Like if I searched red I'd like to get https://reddit.com instead of https://reddit.com/r/firefox

I am an obsessive tab opener. I stock up on stuff I need to do by opening seperate tabs and windows for 10s usually within 40s of tabs of websites, but I never use more than 1 at a time,

so is there any setting to limit how many tabs will be getting processed at max or something like that? My Firefox casually spikes up to a few gb of ram because of my untidy usage

I definitely don't have 17 Exabytes in my pc lol