Data month 2026-09

YouTube AI Chapters & Timestamp Generator

Free AI chapter & timestamp generator for YouTube — no API key, no signup. Works on long podcasts too. Copy in one click.

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According to AlphaMoat, as of 2026-09, the Chrome extension YouTube AI Chapters & Timestamp Generator has 50 users (+72.4% MoM) — ranked #5,450 of 9,324 AI browser extensions, and #109 of 174 in Video.

Users · 2026-09

50+72.4%

Rating

Overall Rank (9,324)

#5,450

Video Rank

#109/ 174

What is YouTube AI Chapters & Timestamp Generator

From the Chrome Web Store

Free AI chapter & timestamp generator for YouTube — no API key, no signup. Works on long podcasts too. Copy in one click. Add chapters to your YouTube videos in one click — no API key, no sign-up, free.

Chapters (the timestamps in a video's description and progress bar) help viewers navigate and boost your SEO — but writing them by hand is tedious, and most tools make you paste in your own paid OpenAI key. This one doesn't. Open your video, click the icon, and get a clean, ready-to-paste chapter list built from the video's captions.

00:00 Intro 01:24 First Topic 03:10 The Main Demo ...

WHAT IT DOES

Generates chapters with timestamps from any YouTube video that has captions
AI-written titles — clear, descriptive section names, free, no API key required
NEW — long videos supported: podcasts, lectures and streams get chapters across the WHOLE video, not just the start
One-click copy of the whole block, formatted for your description (first chapter at 0:00, as YouTube requires)
Choose how many chapters: fewer/longer or more/shorter
Pick the caption language track
Works with manual and auto-generated captions

WHY IT'S DIFFERENT

Show the rest of the store description▾

Free, and you never enter an API key.
Follows YouTube's chapter rules automatically: first chapter at 0:00, at least 3 chapters, each at least 10 seconds.
If the AI engine is busy or offline, it falls back so you still get chapters.

GREAT FOR

Creators who want navigable, SEO-friendly chapters without the busywork
Long-form video, tutorials, podcasts, interviews, lectures, streams
Anyone tired of tools that demand a paid API key

Whether you call it a YouTube chapter generator, timestamp generator, chapter marker maker, or a video table of contents — this adds chapters to your description in one click, free, with no API key.

HOW TO USE 1. Open a YouTube video that has captions. 2. Click the extension icon. 3. Press “Generate chapters”. 4. Click “Copy chapters” and paste the block into your video's description. If a video has no captions, you'll get a clear message — nothing breaks.

PRIVACY

We never collect your account data, watch history, or identity.
Only the video's PUBLIC captions are used.
For AI titles, that public transcript is sent to our Lab Tools service (on Cloudflare) to write the titles, then discarded — we don't store or sell it. Prefer fully local? Switch to the on-device or Basic title engine and nothing leaves your browser.
Minimal permissions: the extension only acts when you click it. No host permissions.

🛣️ ROADMAP — WHAT'S COMING NEXT We're actively building, and what we add next depends on you:

✅ Available now: AI chapters, density control, language picker, one-click copy
🔜 SEO keyword hints inside chapter titles
🔜 Bulk chapters across a playlist or channel
🔜 More interface languages

⭐ HELP US BUILD IT If this saves you time, please leave a rating and a short review — it tells us people want this and decides what we build next. Got a request? Drop it in a review. Thank you! 🙏

Part of Lab Tools — simple, free utilities for YouTube creators. Need the full transcript instead? Try our YT Transcript Extractor. Need translated subtitles? Try Subtitle Auto-Translator.