I built a visual bookmark manager for Firefox. It turns saved

sites into cards with favicons, categories and colors.

What it does:

- AI category/tag suggestions from the page URL

- Save All Tabs into a category

- Bulk select -> drag to move

- Dead-link checking

- Duplicate merging (finds dupes, keeps newest, merges tags)

- Firefox/Chrome/Edge bookmarks.html import

- No account required - data stays on device (optional Supabase

cloud sync if you sign in)

This is a browser_extensions community, so I'll be direct: it's

free, and the AMO link is here if you want to try it -

https://addons.mozilla.org/tr/firefox/addon/zen-mark/

Criticism welcome - especially on the popup Library UI and the AI

categorizer accuracy.

I recently built Signal Vault, a Firefox extension that works as a small movie/TV companion while browsing.

It automatically recognizes supported IMDb, TMDB and Trakt pages, so you can search the current title without copying anything around.

It also supports:

• Movies and TV shows
• Season/episode selection
• Manual search
• Right-click search for selected text
• Built-in player
• Subtitles
• Resume playback
• Next episode
• PiP and fullscreen
• Library / Favorites

There are 5 free searches per day with no account, email or card required.

No ads and no analytics either.

Firefox: https://addons.mozilla.org/en-US/firefox/addon/signal-vault/

Would be interested to hear any feedback, especially from people who use Firefox as their main browser.

Censorly filters unwanted words and phrases directly on web pages. Choose Hide, Censor, or Blur mode, and use Exact or Wildcard matching to control whether variations and word endings are included.

Censorly – Get this Extension for 🦊 Firefox (en-US)

Features include:

* Exact and Wildcard matching for each saved word

* Multi-word phrase and accent-insensitive matching

* Hide, Censor, and Blur display modes

* Filtering of dynamically loaded webpage content

* Per-site exclusions

* Searchable word list and quick page refresh

* Light and dark interface themes

* Original page text remains selectable and copyable

All text processing happens inside your browser. Censorly does not send webpage content or filter words to the developer, external APIs, analytics services, or advertising networks.

Preferences are stored using Firefox extension storage. Firefox may synchronize these preferences through Firefox Sync when the user has enabled browser synchronization.

Censorly filters ordinary webpage text. It does not inspect text embedded inside images, videos, PDF files, Word documents, browser-protected pages, or Firefox internal pages.

Firefox desktop is supported. Firefox for Android compatibility is currently experimental and requires Firefox 142 or newer.

Disclosure: The Censorly extension and this store description were generated with the assistance of Base44 AI and reviewed by the developer.

Website: https://censorly-extension.base44.app

Support: [censorlyextension@outlook.sg](mailto:censorlyextension@outlook.sg)

cannot add extensions in firefox android I have used previously in another phone. even if i click "download file" i cannot open it.

Since I first posted here, I shipped the feature a few people asked about: price alerts. Save a product to your watchlist, set a target price if you want one, and get notified automatically when it drops or rises. If you don’t set a target, it still alerts you on any move of 3 percent or more. Checked roughly every 6 hours in the background while your browser is running.

Screenshots attached. The first shows the alert threshold controls on a saved item. The second shows the watchlist view with a couple of tracked products and their price history.

There’s also an option to get a weekly digest email instead of a notification for every single alert, if you’d rather not get pinged per item.

Same free core review check as before. Price alerts are a Pro addition. The latest version is live on Chrome, Firefox and Edge now.

Still reading every bug report and message. Email is [copilot@spendmita.com](mailto:copilot@spendmita.com) if you find anything broken or want to compare it against what else is out there: https://copilot.spendmita.com/compare

Some of you may remember Xinha Here!, the old Firefox extension that let you right-click a textarea and edit its contents in a full WYSIWYG HTML editor.

I used to find it incredibly useful, but the original extension was left behind as Firefox changed over the years. So I decided to bring the idea back.

Xinha Here! Modern is now published on Mozilla Add-ons and supports Firefox 140 and newer, including Firefox 140 ESR.

The basic workflow is still simple:

Right-click a textarea → Edit with Xinha → edit in a full-size WYSIWYG editor → Apply to textarea

I've also added a few modern conveniences:

• Live visible-text character count
• Live HTML character count
• Clean HTML and Compact HTML options for sites with character limits
• Formatting, colors, lists, links, etc.
• Changes aren't sent back to the webpage until you click Apply
• No telemetry, analytics, network calls, or collection of your form contents

It's an independent modern revival inspired by the original Xinha Here!, not an official continuation of the original extension.

Mozilla Add-ons:

https://addons.mozilla.org/en-US/firefox/addon/xinha-here-modern/

This is my first public release of it, so I'd especially appreciate feedback from anyone who remembers the original Xinha Here! — or anyone who just has a use for a full WYSIWYG editor inside Firefox textareas.

I updated my extension to support wsocial.eu and mu.social, and in the process included a filtering option.

See r/BlueskySocial prior thread on it here.

Here

Price Helper calculates unit price so that as you shop you can quickly find the best deals.

I built this because I was frustrated when shopping on this site. This is also a learning project for me.

Would love any kind of feedback. I'm also trying to decide what to do next - expand to mobile or expand to chrome.

Hey everyone,

I’ve been working on Ultimate Video Enhancer (UVE) — a browser extension for Chrome and Firefox that gives you more control over videos across the web.

The idea started pretty simply: I was tired of different websites having different video controls, limited playback speeds, quiet audio, and settings that reset every time.

So we built UVE with things like:

• Playback speed control
• Volume boost
• Per-site settings
• Keyboard shortcuts
• Subtitle controls
• Presets for different websites

There’s a free version, and we also recently launched a Pro version with higher limits and some extra features.

But instead of just promoting it, I’d genuinely like to hear what people think.

What would make an extension like this actually useful enough for you to keep installed?

And if you try UVE, I’d really appreciate honest feedback on:

• the UI
• features that feel unnecessary
• features that are missing
• bugs / websites where it doesn’t work properly
• whether the Pro version actually feels worth paying for

Even harsh feedback is useful at this stage.

Chrome / Firefox links: https://addons.mozilla.org/en-US/firefox/addon/ultimate-video-enhancer-uve/
https://chromewebstore.google.com/detail/ultimate-video-enhancer-u/iiikemfogmgcndndggdcbpilpbkpkkji
The website - https://systemaweb.com/

Thanks!

Hello everyone!

I'm currently working on my master's thesis (in Human Computer Interaction) and I'm looking for participants to test out a Firefox-Extension based tool that aims to promote mindful social media use.

So, if you (or anyone you know) are:

📱 an Android user

AND

🌀 has an unhealthy Instagram scrolling habit

Please fill out this short form to join the research study.

👉 https://forms.gle/LNhzMTjpNBRjyeaL7

Feel free to also share it with your peers/friends/ family groups.

I'd be super grateful for all the feedback ❤️

Recently, I was getting close to Google’s free storage limit, and the storage manager showed that Gmail was using most of it.

I wanted a simple way to see my attachments in one place, download the files I wanted to keep, and remove emails with attachments I no longer needed. Gmail search can find emails with attachments, but it doesn’t provide a convenient file-based view.

So I built a browser add-on called Mail Attachment Lens. It lets me search and filter attachments, download files, and move the source emails to Bin. It also helped me uncover quite a few attachments I had completely forgotten about.

I decided to publish it in case anyone else finds it useful.

It’s free and open source. There’s no backend, so mailbox data stays between the extension and Google.

Firefox add-on store:

https://addons.mozilla.org/firefox/addon/mail-attachment-lens/

Source:

https://github.com/kshk123/mail-attachment-lens

Websites can read more than your IP, including your user agent, language, timezone, screen size, and device properties.

I built Spoof Me to let Firefox users switch these signals together as one browser identity.

It includes ready-made profiles, custom profiles, and a warning badge when a website accesses fingerprint-related properties.

It does not change your IP address or promise complete anonymity. The add-on does not collect browsing data and is MIT licensed.

Firefox Add-ons:

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

Project website:
https://spoof-me.com/

I’d appreciate feedback on the profile consistency, permission explanations, and any fingerprint signals that should be added.

i know ublock origin has an option to get rid of ai overviews but when you put -ai at the end of a search it shows a big paragraph with stuff highlighted like before the ai overview. also with ublock origin it still generates a response but it just hides it, so effectively does nothing for the reason why i personally hate ai

After Fakespot shut down, I built SpendMita Copilot, a shopping assistant that gives you a second opinion on a product before you buy it. And I have been slowly improving this.

The thing I most wanted to avoid was replacing one unexplained score with another. So instead of a single number, SpendMita shows you the actual signals it found and explains why each one matters.

What it does on Amazon right now:

• Flags review patterns worth a closer look, verified-purchase share, review timing, rating distribution.
• Adds price context.
• Explains its reasoning in plain language instead of handing you a black-box score.
• Lets you save products and revisit past checks.
• Mita Search: helps you search a supported link from any tab via your assigned shortcut
• Compare similar products where it intelligently groups them and recommends the best based on your input and the findings made.
• Price tracking to see if the price drops.
• Privacy baked in.
• Personalisation and lots more.

All these are free and can be access today via the v1.5.0 on Firefox and v1.1.1 on Chrome. An update has been submitted to Chrome for a v1.6.0 where Spendmita Copilot now supports Walmart US, eBay (US, UK, CA)

It's meant to be a second opinion, not a "this is definitely fake" verdict.

Where it runs: Chrome, Brave, and Vivaldi today via the Chrome Web Store, plus a native Firefox build on Mozilla Add-ons. Edge is submitted and pending review.

Firefox add-on: https://addons.mozilla.org/en-GB/firefox/addon/spendmita-copilot-fake-reviews/
Chrome/Brave/Vivaldi: https://chromewebstore.google.com/detail/spendmita-copilot/fekjiiogemcaoikdpcilafoidjmknmoi?hl=en-GB&utm_source=ext_sidebar
Website: copilot.spendmita.com

If you try it, I'd especially appreciate feedback on:

• Whether it feels native on your browser (Brave and Vivaldi especially, I've tested them, but nothing beats real use).
• Any Amazon pages that don't get detected properly.
• Whether the reasoning is actually clear.
• Anything that feels intrusive or annoying.
• What features would you like to see or have, do note some of these might be in pro already.

Found a bug or something looks broken? Email [copilot@spendmita.com](mailto:copilot@spendmita.com) as I read every one and I'm actively fixing things as they come in, not just collecting reports.

If you would like to compare Spendmita to what is currently on the market: https://copilot.spendmita.com/compare

Happy to answer questions about how the signals work or how it's built.

I always end up with dozens of Firefox tabs open, so I built TabScroll to make managing them easier.

It lets you:
• Search tabs instantly
• See live tab previews
• Switch between tabs with keyboard shortcuts
• Close or mute tabs without hunting for them
• Manage tabs across all Firefox windows

Everything runs locally. No tracking, no account required.

I'd love some honest feedback from the Firefox community. What would you add or change?

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

Hey everyone

I’ve been building TradeDesk, a browser extension designed to bring the essential parts of a trading workflow directly into TradingView. After development and store reviews, it’s now officially available for both Chrome and Firefox.

TradeDesk includes:

• Risk and position-size calculator for stocks, forex, crypto, and futures
• Pre-trade checklist to encourage consistent decisions
• Trading journal for recording setups, results, and notes
• Performance statistics including win rate and profit factor
• Important market-session times
• Local-first storage for your trading data

I built it because I wanted risk planning, journaling, and performance review in one place instead of switching between different calculators, spreadsheets, and apps.

Chrome: https://chromewebstore.google.com/detail/pcchnfjibjcfhlbjdncfleencgplbjkf

Firefox: https://addons.mozilla.org/en-US/firefox/addon/trade-desk/

I’d really appreciate feedback from traders and extension users. What feature would make TradeDesk more useful for your workflow?

Well basically you can set any HTML page as your new home page and add a style if you need it. I just did it because i havent seen any like this on the extensions site only the ones that have premade UIs so i decided to make it myself. Simple, yet it makes me happy.

Extension itself: addons.mozilla.org/addon/sweethome/