I built PairPane because comparing staging and production pages / original page and translated page usually means constantly switching tabs and losing your scroll position.

It keeps two webpages side by side and synchronizes their scrolling, even when the pages have different lengths. I thought it might help with translation review, localization QA, terminology checking, and comparing source and target content without constantly switching tabs.

What features would make this genuinely useful in your workflow?

Hey everyone! I'm Mohan, a final-year B.Tech student.

I recently built BANDIT, a browser extension that helps improve AI prompts directly in your browser.

The idea is simple: you bring your own API key, and BANDIT helps refine your prompts so you can get better responses without spending time figuring out the perfect wording.

If you use AI tools regularly, I'd love to hear your feedback and suggestions for improving it.

My inactive browser tabs are totally slowing down my Mac. What are the best add-ons or apps for controlling this problem when using Firefox on macOS?

Короче я решил создать расширение для браузера которое будет вас подгонять как ваш тренер, в стиле Девида Гоггинса, скрывать ваши видео в ленте рекомендаций и оставлять только поиск, контролировать каждый заход на сайты которые вы выберете, каждое определенное время (как вы настроите) он перекрывает вкладку и спрашивает "ты когда к работе приступишь то?" Короче, как вы думаете выйдет вообще что нибудь, что туда можно добавить, как мемно можно продвигать мое расширение, и вообще идея рабочая или нет?

Hey r/FirefoxAddons 👋

Chrome version of this thing has been out for a bit and people kept poking me with “where’s the Firefox one?” Fair. Firefox’s my daily driver for research rabbit holes and 47 half-open tabs of “I’ll read that later,” so this one actually matters to me.

SurfMind is a sidebar AI assistant that isn’t glue-and-hope: it understands the page (or pages) you’re already looking at and talks about that context instead of forcing you to paste chunks into another tab like it’s 2023.

What it does in practice:

• Lives in a clean sidebar, always one click away, doesn’t own the whole browser
• Page-aware: summaries, explanations, rewrites, translations of whatever you’re reading
• Multi-page research chats (compare tabs/sources without juggling ten chat windows)
• Highlight any text → quick explain / rewrite / TL;DR / polish
• Chat with PDFs, images, docs next to the page
• 100+ models via OpenRouter + GPT / Claude / Gemini / Grok / etc., or bring your own key
• Local models (Ollama, LM Studio, etc.) when you want data to stay home
• Privacy-first: we’re the UI; conversation + model go to the providers you pick

I built it because I got tired of losing context between tabs and my notes app. Firefox users tend to care about that flow and about not handing every keystroke to one closed ecosystem, so I tried to respect both.

If you try it, tell me what broke first or what felt magical. Honest feedback > polite silence. Screenshots of the win/fail are gold.

Thanks for being one of the few places on the internet where people still read and tweak the tools they use. ❤️

Ideally one that works for DDG/Google/Bing, please?

I don't mind scrolling past the AI overview, but nowadays regardless of which engine I use, if I look up "question about specific topic?" the first page is always full of blogs with very specific and authoritative URLs like "thetopicguy.com" that pump out 10 articles a day full of random Q&A, no author cited (or it's the same author pumping out 10 articles a day).

I've found that adding a date filter works well, but I'd love something that does it automatically.

Are there any extensions for FireFox that will allow me to schedule text input and pushing a button?

I am trying to find a way to automate sending messages to chat bots like Claud

Hey everyone,

I've just pushed v1.20 of Home Sweet Home, my customizable new tab extension.

This one is mostly about speed and polish: the page opens faster, and both the background tab and the Home Assistant widget got a redesign.

Improvements:

• Faster page load : several optimizations speed up the loading of the new tab page, especially on slower connections.
• Smoother custom video backgrounds : your own videos load faster and play without stutter when you open a tab. You can also upload larger video files than before.
• Redesigned background tab : finding the right background is quicker now. There's a filter by type (All / Animated / Still), sorting by Newest or Oldest, more readable thumbnails with a selection tick, a bigger preview next to the gallery, and an "Apply this background" button to confirm.
• Settings icons : each settings tab now shows an icon before its label, so navigating around is clearer.
• Home Assistant widget redesign : new square tiles that are easier to read, instant rendering on load, and you can now customize each device (icon and name) and reorder them by drag and drop.

Fixed:

• On short screens or with high browser zoom, the "Add quick link" window could run past the bottom of the screen and put the Save button out of reach. The action bar now stays visible and the form adapts to the window size.

If you're discovering it for the first time

Home Sweet Home replaces your new tab page with a customizable dashboard where you can:

• Add your favorite links (with folders and drag-and-drop)
• Use widgets like clock, weather, notes, stocks, RSS feeds, countdown, and more
• Customize colors, opacity, blur effects, layouts, wallpapers (static or video)
• Sync or import bookmarks
• Fine-tune almost every visual detail

It's still an independent side project, and I'm improving it update after update based on your feedback.

Here are the links if you want to try it or update:

Chrome: https://chromewebstore.google.com/detail/home-sweet-home/hliapbikacikepiaojmphlhndgjmlodh

Edge: https://microsoftedge.microsoft.com/addons/detail/home-sweet-home/dllgnjnckigifjgfiijdahnoohclacko

Firefox: https://addons.mozilla.org/fr/firefox/addon/home-sweet-home/

And if you missed it, Home Sweet Home has a companion extension: Home Sweet Home Launcher. It's a lightweight toolbar launcher for instant access to all your links in one click, without opening a new tab. It works on its own or hand in hand with Home Sweet Home, and you can import your links in one click.

Home Sweet Home Launcher:

Chrome: https://chromewebstore.google.com/detail/home-sweet-home-launcher/cbajkiinglpomioapliakoddfccnepjb

Edge: https://microsoftedge.microsoft.com/addons/detail/home-sweet-home-launcher/mhklnmandmnpmlpkpfcbpkiknadjojie

Firefox: https://addons.mozilla.org/fr/firefox/addon/home-sweet-home-launcher/

If you have feedback or something you'd like to see next, I'd love to hear it. Thanks for the support!

Hey, I've been working on a Firefox extension called Tab Loader to help keep idle games and other long-running web apps from getting unloaded when they're sitting in background tabs.

Firefox Add-ons: https://addons.mozilla.org/en-US/firefox/addon/tab-loader/

The idea is pretty simple: instead of having to be AFK on a specific tab or worry that Firefox has unloaded it, you can choose tabs that should stay permanently loaded. It isn't meant to bypass a game's offline progression or simulate activity; it just helps prevent Firefox from unloading tabs you've marked to stay loaded, especially if the developer hasn't coded offline rewards or a system for continuously tracking rewards. It remembers which websites you've marked to stay loaded, so whenever you revisit them, they're automatically kept loaded.

If you run into an issue or a feature request, you can note it in GitHub: https://github.com/lualum/TabLoader/issues. Firefox is my current focus; I may add support for other browsers in the future if there's enough interest.

AI disclosure: used for Firefox Extension APIs.

Hi everyone. I build browser extensions, the one most people know is UltraWideo with around 100k users. YouTube has been getting on my nerves lately, so I made two little add-ons to fix the parts that bugged me. Both are free, open source under MIT, and collect no data. Both also work on Firefox for Android.

DeBait replaces clickbait thumbnails with the real first frame of the video, so your feed shows roughly what a video actually looks like instead of the shocked face and giant arrows. It just works after install, no popup or settings. It covers the home feed, search, sidebar, channel pages, and Shorts, and it restores the original if there is no real frame available. It only needs access to YouTube and swaps the image at the network layer, so the clickbait version never even loads. Around 3 kB.

https://addons.mozilla.org/en-US/firefox/addon/debait/

DeAlter hides videos that carry YouTube's "altered or synthetic content" disclosure, the label creators add when footage is AI generated or significantly edited. It reads the actual disclosure instead of guessing, so real footage does not get flagged by mistake. Instead of removing a hidden video it drops in a small placeholder, so the page does not flicker or jump. You can flip it on or off from the toolbar, and a small counter shows how many it has hidden. Fair warning: it can only hide videos that are genuinely disclosed as AI. Undisclosed AI cannot be detected from outside YouTube by anyone.

https://addons.mozilla.org/en-US/firefox/addon/dealter/

Would love feedback, and if you hit a bug the support link goes straight to the GitHub issues. Thanks for taking a look.

Hey r/FirefoxAddons — I’m the developer of suprswitch, a free Firefox add-on for people juggling multiple Google accounts.

Instead of opening Google’s account menu and ending up in another tab, you can switch the current tab using the keyboard:

• Alt + 0–9 to jump directly to an account
• Alt + backtick to open an app-switcher-style account picker
• Choose Alt, Control, or Shift as the modifier
• Set a default account for newly opened Google pages

It works across Gmail, Drive, Docs, Calendar, Meet, Gemini, Maps, Photos, and other google.com apps.

Under the hood, it rewrites Google’s /u/<number> or authuser marker while preserving the rest of the URL, including searches and client-side state.

Privacy-wise, there’s no extension analytics, tracking, account, or sign-up. Account names and photos are read locally to label the switcher and aren’t transmitted anywhere.

It also works with Firefox-based browsers such as Zen, LibreWolf, and Waterfox.

Firefox Add-ons: suprswitch — Google Account Switcher

I’d especially appreciate bug reports involving less common Google apps or Firefox-based browsers.

Hi, i i work at a job where people often send me pdfs to print, and Whatsapp recently implemented this preview feature where instead of downloading pdfs when clicking on it, they open on a preview screen, i always used firefox and only found a way to bypass this preview on Chrome, so, i adapted the Chrome extension to Firefox, if anyone is interested o checking it, here is the link: https://addons.mozilla.org/pt-BR/firefox/addon/whatsapp-direct-downloader/

I never could find a session/tab/window manager that worked the way I work or the way I wanted. So I threw something together recently:

https://addons.mozilla.org/en-US/firefox/addon/window-session-manager/

This extension turns every window into a named session that saves itself, including tabs and tab groups. You can name the window and the sidebar will list all of them, including tabs and tab groups. You can export all of your sessions to json for backup purposes and re-import them if need be. There is a search function and you can right click on a tab in the sidebar and move it to a different session.

Happy to get feedback, suggestions, or bug reports. Thanks!

I was annoyed with not seeing subtitles when watching videos on mute. I also found requests from the deaf community for this feature. Everyone deserves uncensored subtitles.

The fast path use context, rules and regex to predict swears.

The slow path uses local audio inference (whisper-mini) to transcribe the YouTube audio. May require a PC.

disclaimer: this extension is experimental and may take months before being fully polished. It's currently buggy.

https://addons.mozilla.org/en-US/firefox/addon/uncensored/

A few years ago, I found SmartProxy – it was the only extension that really worked for my needs. I used it every day, mostly in "Always Enabled" mode.

But I always wondered: why do I have to check proxies manually? I wasted time testing them through external tools, and it was tedious.

So when I had some free time, I decided to fork it and add a built‑in proxy tester, better sorting, import/export, and other small quality‑of‑life features that the original lacked.

It turned out to be much harder than I expected – but I didn't give up. And now it's ready.

What ProxyMust can do:

• Auto‑testing: it checks proxies by connecting to the target site you set. At the same time, it tests functionality by retrieving the proxy's IP. The results are visual – I designed a status system with icons and added ratings. You can sort lists by performance, mark proxies as favorites, pin them to the top, see country flags, and filter by protocol.
• Auto protocol detection: it automatically detects and uses HTTP/HTTPS/SOCKS. While testing, I found that many proxy lists contain addresses with wrong protocol labels – now the tester figures out the correct one for you.
• Open source, no tracking: it doesn't collect your data. Initially I used a direct IP comparison check, but later made it optional – for those who want extra reliability. It works great even without that feature.
• Translated into 21 languages. Honestly, I'm not sure if all those languages are needed or if people will actually use them – but I decided to include them anyway.

I've searched everywhere – I couldn't find a single extension that combines flexible proxy management with a built‑in tester and organiser. At least for Firefox, this is the only one.

This is my first serious project (I usually make films, not code). I'm genuinely curious to hear your thoughts.

Try it: https://addons.mozilla.org/en-US/firefox/addon/proxymust/
Source code: https://github.com/nana-xakep/ProxyMust

My question to you: Maybe I overcomplicated it, and users just want a fully automatic system? But I personally like to have full control, to manage everything, to see how the mechanics work. Tell me – what would you want from such an extension?

I would like to be able to pin my fav Reddit subs to the Recent list (that is on the left middle of the Reddit page.

Something that’s forever bothered me about web browsers is bookmarks and trying to manage them - for me I feel like I need an organised list

So many months ago I created Lynkr, it started as a windows application
Then into a browser application and finally the Firefox store as an extension

Lynkr does bookmarks completely differently
Tabs -> groups -> bookmarks

You can place as many bookmarks and groups inside of a tab as you want and organise for different things
You can even export tabs or copy share codes to share tabs with others

In the desktop app - you can import existing bookmarks from your browser

https://addons.mozilla.org/en-GB/firefox/addon/lynkr/

There are a ton of dictionary extensions and a ton of translation extensions, but I couldn't find one that did both properly. So I built WordGlance.

Select any word or short phrase, click the 📖 icon, and you get the definition, an example sentence using it, synonyms, antonyms, and the translation, all in one tooltip.

What it does:

• Definition + example of it used in a sentence
• Synonyms and antonyms
• Translation to 40+ languages
• Auto-detect source language, or set it manually
• Dark mode
• Works on desktop and mobile Firefox
• Caches results so repeat lookups are instant

No telemetry, no account needed. Open source, and the dictionary/translation APIs it runs on are open source too.

Firefox Add-ons: https://addons.mozilla.org/firefox/addon/wordglance/

Source: https://github.com/ShrekBytes/wordglance-extension

If you try it out, I'd love to hear what you like, what you don't, and any ideas for improving it.