r/FirefoxAddons

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/

Hey everyone,

I was frustrated by website blockers that either track your data or fail to work reliably under the new Manifest V3 rules. I wanted something native to Firefox, highly reliable, and completely private.

I built Clarity Block, a website blocker and focus extension that runs completely locally.

Why it’s built for privacy and reliability:

No Telemetry: It does not harvest your browsing data. All of your blocklists, analytics, and session settings are stored entirely locally on your device.

True MV3 Blocking: It takes advantage of Firefox's unique ability to return a Promise from webRequest.onBeforeRequest. This means the extension intercepts and blocks distracting sites reliably on every single request, without relying on flaky in-memory caches that fail when the background script suspends.

Workflow Features:

Focus Sessions: Set a custom timer to stay locked in, and automatically block access to your customized list of distracting domains.

Group Management: Organize your distracting websites into distinct categories and toggle them on or off with a single click.

Advanced Controls : For those who need more, it includes advanced features like wildcard blocking (e.g., *.news.com), daily time quotas per domain, and custom redirect URLs.

Would love to hear your feedback on the frosted-glass UI!

Link: https://addons.mozilla.org/en-US/firefox/addon/clarity-block/

Hey everyone,

I spend way too much time reading PDFs in the browser, and the default Firefox PDF viewer (PDF.js) always felt a bit boring—and worse, blinding at night. Since extensions can't modify the built-in privileged PDF page directly, I decided to package a custom viewer as a browser extension.

I called it RicePDF.

• Custom Themes: You can change the PDF's background and text colors to match your system theme.

• Zen Mode / Space Saving: You can show/hide the toolbar to maximize screen space for the actual content. (Press F3)

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

Chrome: Coming soon (you can download from github and manaully add it for now)

It’s open source and fully customizable. If you’ve ever wanted to build your own PDF.js add-on, you can also use this repo as a boilerplate.

Would love to hear what you guys think or if there are any specific themes you'd like to see!

Repo: https://github.com/yhcb21/RicePDF

https://preview.redd.it/79t29iojry9h1.png?width=189&format=png&auto=webp&s=d2d6f63e3a0ac928f8d912c1152ac3202dad59bc

I will be adding more themes soon! Please drop your suggestions

I tried a bunch of extensions that hide YouTube Shorts, Instagram Reels, TikTok feeds, etc.

They helped a little, but I realized my actual problem wasn't Shorts or Reels.

I'd just end up scrolling the main feed instead.

So I built ScrollBlock.

Instead of only hiding content, it tries to catch you when you're stuck in a scrolling loop and shows a popup that forces you to make a conscious decision:

"Do I actually want to keep scrolling?"

It also includes:

• Daily time limits for specific websites
• 4-digit PIN locks for sites you want to avoid completely
• Feed cleanup (Reels, Shorts, Explore pages, and other addictive feeds)

Works on:
Instagram, YouTube, Facebook, TikTok, Twitter/X, Reddit, Pinterest, Threads, and LinkedIn.

The goal isn't to block social media.

It's to stop opening Instagram for 5 minutes and realizing an hour disappeared.

Completely free.

Downloads

• Chrome (Arc, Brave, Vivaldi, Opera)
• Edge
• Firefox

Would love to hear what you think. If you try it out and find it useful, please consider leaving a review.

There is now an "AI" notice tag on videos full of AI slop, I guess? Can anyone detect that and warn people with some configurable notification?

For example, if I click on a recommended video or go to the home page and browse the algorithm's choices, I could accidentally end up on an AI slop video. Or get a link shared with me. I would like to get a red box around it, or add something to the interface.

There's lots of YouTube video extensions, but this seems new. I spotted the "AI" in the corner as I was about to play it.

I purposely don't show the URL or channel. This stuff is causing a ton of confusion, and I think Reddit threads contribute to many ideas, sadly enough.