Video Summarizer — Turn Any Transcript into Structured Notes

oEmbed preview + client-side extractive summarizer (frequency scoring, no upload).

Quick answer: Paste a YouTube link for the preview card, paste (or auto-load your own) transcript, and get a structured extractive summary locally.

YouTube URL

Transcript / notes

How to use

Paste URL → card.
Paste transcript → Summarize.
Copy TL;DR / points / chapters.

About this tool

YouTube does not expose transcripts to third-party browsers, so honest summarizers work from a transcript you provide — and that's exactly what this does well. Paste the link for the preview card, paste the transcript (or your own notes), and the local engine scores sentences by term frequency against the title, then emits a structured TL;DR: key points, a one-line summary, and suggested chapter markers. Optional: paste your own Gemini API key for an AI pass — it stays in your browser only. Your file never leaves this page — processing runs in your browser via WebAssembly; nothing is uploaded and the file is dropped from memory when you close the tab.

FAQ

Where's the transcript from?

You paste it (YouTube's transcript panel copies cleanly); browsers can't fetch it cross-origin.

How does local summarizing work?

Sentence scoring by title-aligned term frequency — fast, private, deterministic.

AI option?

Paste your own Gemini key (stored only in memory) for a generative pass.

Languages?

The extractive engine is language-agnostic.

Uploaded?

Never — Your file never leaves this page — processing runs in your browser via WebAssembly; nothing is uploaded and the file is dropped from memory when you close the tab.

Rate this tool

Your rating stays in this browser (local storage) — nothing is sent to any server.

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Video Summarizer — Turn Any Transcript into Structured Notes

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