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Akshit
Akshit

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How I built a browser extension that converts at 64% (and kept it under 20KB)

Hey everyone!

I’m Akshit, a MERN stack developer, and I want to share a recent win with a side project that’s been taking off lately.

Like a lot of you, I get annoyed when YouTube automatically turns on auto-generated captions. You turn them off, click another video, and they’re back. It’s a tiny friction point, but it breaks the flow.

I looked for solutions, but I absolutely hate bloated software. I’m the kind of guy who squeezes every last drop of performance out of my hardware, and I believe code should be exactly the same. I didn't want an extension that ate up RAM or injected heavy scripts just to hide some text.

So, I built No CC: Hide YouTube™ Captions & Subtitles.

My primary goal was extreme efficiency. No unnecessary background scripts, no heavy libraries, just pure, clean, native code.

The result? The entire extension including all icons and assets is under 20KB.

What started as a personal tool to fix a minor annoyance has suddenly started gaining some real traction. I recently checked my dashboards across Chrome, Firefox, and Edge, and I’m about to cross the 200 Weekly Active Users milestone!

Here are a few stats from the last 30 days that blew my mind:

64.6% Conversion Rate: Roughly 2 out of 3 people who visit the Chrome store page install it.

80% Retention: People who install it are actually keeping it.

Global Reach: The top install regions are the US, Germany, and Japan.

Seeing an ultra-lightweight tool I built in my room scale globally has been an amazing feeling and it validates that users do care about performant, bloat-free software.

I’d love for the Dev community to tear it apart (or try it out!)

If you watch a lot of YouTube and hate the auto-captions, I’d be honored if you gave it a spin. Because it's so lightweight, you literally won't even notice it's running except that those annoying CCs will be gone forever.

NO-CC Page Link
Chrome Web Store
Firefox Add-ons
Edge Add-ons

My ask: If you find it useful, dropping a quick review or rating on the store would mean the absolute world to me. It helps small, independent tools like this get visibility over the bloated corporate extensions.

Also, if you have any questions about building cross-browser extensions or optimizing assets to get under that 20KB mark, ask away in the comments!

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