PRPickrack

YouTube Video Summarizer

Paste a YouTube URL and get a Claude Haiku 4.5 summary of the transcript. Free, no signup, daily quota of 10.

Requires a video with captions

The summarizer reads YouTube's public caption track. If a video has no captions (auto-generated or manual), you'll see a clear error. Most popular videos have them; the few that don't are usually short uploads or live streams.

Paste a YouTube URL and get a Claude Haiku summary of the transcript. Short, medium, or bullet-structured output.

YouTube Summarizer is for when you find a 45-minute YouTube interview, podcast, or lecture and want to know if it's worth your time before committing. Or you want the key points to reference later without rewatching. Or you're researching and need quick coverage of 5-10 videos in an hour.

Pickrack's YouTube Summarizer reads YouTube's public caption track, sends the transcript to Claude Haiku 4.5, and returns a structured summary. Three length presets: short (3-4 sentences), medium (6-10 sentences), or long (bullet-structured with thesis + main points + takeaway).

Requires the video to have captions (auto-generated or manual — both work). Free, no signup, daily quota of 10 videos/IP. The video binary is never downloaded — only the transcript metadata and caption XML feed.

Key features

  • Reads public YouTube captions — Fetches the captionTracks listing from the watch page, downloads the caption XML, strips timing — entirely public data, no API key needed.
  • Three summary lengths — Short (3-4 sentences for quick triage), Medium (6-10 sentences for context), Long (structured bullets for note-taking).
  • Language preservation — Vietnamese video → Vietnamese summary; English → English; Spanish → Spanish. The model detects language from transcript.
  • Title extraction — Pulls the video title from the watch page metadata and shows it alongside the summary for context.
  • 50K char transcript cap — Most 1-hour videos have 6-12K chars of transcript. The 50K cap supports up to ~5-hour podcasts. Longer videos are truncated with a notice.

How to use

  1. Step 1: Find a video with captions — Most popular videos have captions (auto-generated or manual). If a video shows no CC button on YouTube, it has no captions and this tool can't summarize it.
  2. Step 2: Copy the URL and paste — Standard youtube.com/watch?v=…, youtu.be/…, or /shorts/… URLs all work. Paste into the URL field.
  3. Step 3: Pick a summary length — Short for triage, Medium for context, Long for bullet-by-bullet notes.
  4. Step 4: Click Summarize — The tool fetches the watch page, parses caption tracks, downloads the chosen track, strips timing, sends to Claude. Total time: 5-15 seconds.
  5. Step 5: Read and copy — Summary appears with title and transcript stats. Click Copy to paste into your notes app.

When to use

  • Research a topic across 10 videos in 1 hour — summarize each, find the ones worth full viewing
  • Decide whether to watch a 90-minute interview — get the thesis and 3 main points before committing
  • Reference past lectures — pull a structured summary of a course video you watched last week
  • News briefing — summarize 5 news/explainer videos for a daily digest
  • Language learning — get a Vietnamese summary of an English video (or vice versa) by combining this with a translator
  • Meeting recap — recorded Zoom/Meet uploaded to YouTube unlisted? Summarize the recording without rewatching

Frequently asked questions

Why do some videos return 'no captions'?

YouTube only auto-generates captions for videos in specific languages (English, Spanish, French, German, Italian, Japanese, Korean, Portuguese, Russian, Vietnamese, and a few others). Live streams, very short uploads, and music videos often lack captions. If you see no CC button on the video itself, this tool can't access a transcript.

Is the summary always accurate?

It's as accurate as the transcript. Auto-generated captions mishear technical terms, accented speech, and overlapping voices — those errors propagate to the summary. Manual captions are much better. For high-stakes summaries (legal, medical, academic), verify against the original video.

What's sent to Anthropic?

Only the transcript text and the optional video title — no metadata, no IP, no identifying info beyond what's in the transcript itself. Anthropic's API does not use prompt content for model training and deletes it within 30 days per their data policy.

Does this work with private or unlisted videos?

Unlisted videos with public captions: yes (anyone with the URL can access). Truly private videos: no — YouTube blocks the watch page. The tool relies on public data only.

Why the 10/day daily quota?

Each summary costs Pickrack ~$0.005-0.02 in Claude API charges (depending on length). 10/day per IP keeps the tool freely usable for individuals while bounding the daily cost. If you self-host the project (github.com/pickrack/pickrack) with your own Anthropic key, the limit is configurable.

Can I summarize multiple videos at once?

Not in v1 — single video per request. Batch summarization is on the roadmap but lower-priority because of the per-call cost.

Will this work on YouTube Music or Shorts?

Shorts: yes, if they have captions (many auto-gen). YouTube Music: not supported — those URLs route to music.youtube.com which has a different page structure.

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