Search YouTube.
Instantly.

Find exactly where and what was said - in seconds. Skip the noise. Jump straight to the moment that matters.

Get CapScript Web Explore Features
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Save hundreds of hours.
Get more done.

Search in Seconds

Type what you're looking for and instantly see every matching moment across the entire transcript - highlighted, timestamped, and ready to jump to.

  • Smart token matching
  • Exact phrase search
  • Flexible contains mode
Fetch view screenshot

Jump Instantly

Click any result to teleport to that exact second in the video. No scrubbing. No guessing. The video skips straight there - with the transcript auto-scrolling to match.

  • One-click timestamp navigation
  • Visual timeline markers
  • Auto-scroll transcript sync
Search view screenshot

Save & Organize

Build a personal library of transcripts. Revisit any saved video and search its contents without even opening YouTube - your knowledge, curated and searchable.

  • Persistent transcript library
  • Search across saved videos
  • Organized by track and title
Library view screenshot

Ask AI New

Chat with any video you've fetched. Ask for a summary, the key points or action items - every answer cites the exact timestamps, and one click jumps you straight there.

  • Gemini
  • ChatGPT
  • Claude
  • Local (Ollama)
  • Clickable timestamp citations
  • Bring your own API key
Ask AI chat screenshot

Timeline Ticks

Navigate the YouTube progress bar with clean, customizable ticks. Jump quickly to important moments and tailor markers to your workflow.

1 Customizable tick markers
2 Navigate via timeline clusters
3 Syncs with transcript highlights
Timeline ticks screenshot

Built for speed.
Built for you.

Everything you need to find a moment in a video, in a lightweight extension for Chrome and Firefox.

Fast local search

A tokenized in-browser engine with instant highlights. No network round-trips, no waiting.

Stays on your device

Indexing, search and your library live in your browser. No accounts, no logs. AI chat is optional and uses your own key.

50+ languages

Detects and indexes caption tracks across many languages, with a built-in fallback catalog for wide coverage.

Three search modes

Smart, Exact Phrase or Contains. Token-aware matching that balances precision and recall.

Bring your own AI

Connect Gemini, ChatGPT, Claude or a local model and ask questions with clickable timestamp citations.

Library & export

A persistent local library that scales to many long transcripts. Export anything as JSON or plain text.

One-time.
$9.99.

Full access. No subscription. No tracking. Runs entirely in your browser — forever.

  1. 01
    Purchase Your License

    Complete checkout on Payhip — instant license key delivery to your inbox

  2. 02
    Install the extension

    Add it to your browser in one click - available for Chromium browsers and Firefox

    Get it on theChrome Web Store Get it onFirefox Add-ons
  3. 03
    Enter Your License Key

    Open the extension and paste the key from your purchase email to activate

Works with Chrome, Firefox & Chromium browsers

Chrome Firefox Edge Brave Opera Vivaldi

Lifetime license

$9.99 one-time
  • Lifetime access, no subscription
  • 2 device activations
  • License key emailed instantly, no account needed
  • Chrome, Firefox & Chromium browsers
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Also by @serptail

Need to search
hundreds of transcripts
at once?

CapScript Pro is the desktop companion that does it all locally — bulk-search hundreds of YouTube transcripts at once, privately, instantly. No cloud. No accounts. Completely free. Forever.

Download Latest release Windows · Free forever Download Free GitHub Repo Source & issues Browse code, releases, and changelog View on GitHub

Latest release · Windows · No sign-up required