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I was tired of manually copying YouTube transcripts, so I built a 15KB Firefox extension

A developer built yt-transcript-yoinker, a roughly 15KB Firefox extension that adds a single "Copy Transcript" button to the YouTube interface, letting users grab an entire video transcript to the clipboard in one click. The add-on runs entirely locally with no account, external API, or background server, using about 100 lines of vanilla JavaScript and WebExtension APIs, and is available on GitHub and Mozilla's AMO add-on store. A Chrome port is on the roadmap, with the developer inviting pull requests.

by read1 min views1 publishedSep 19, 2026

If you use YouTube for learning, research, or building AI tools, you know this pain:

Open transcript panel -> Scroll -> Select all -> Try not to copy the whole page -> Paste into notes -> Fix formatting.

I do this 10 times a day. So I built yt-transcript-yoinker.

It's a tiny Firefox add-on that adds a single "Copy Transcript" button right into the YouTube UI. One click, entire transcript in your clipboard. No account, no external API, no data leaving your machine.

GitHub: https://github.com/pawanhirumina/yt-transcript-yoinker

Install from AMO: https://addons.mozilla.org/en-US/firefox/addon/yt-transcript-yoinker/

I needed transcripts for:

Every existing tool either:

I wanted something that just works, locally.

Super simple, no magic.

yt-navigate-finish) navigator.clipboard.writeText() No background server. The whole thing is ~100 lines of JS.

Stack: HTML, CSS, Vanilla JavaScript (WebExtension APIs)

I live in Firefox. And Mozilla's review process for add-ons is actually strict about privacy, which I like for a tool like this. Chrome version is on the roadmap - if you want to help port it, PRs are welcome!

For users:

For devs:

bash
git clone https://github.com/pawanhirumina/yt-transcript-yoinker.git
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