Free YouTube AI Tools
to Summarize, Transcribe & Download
Transform any YouTube video into AI summaries with clickable chapters, download full transcripts with timestamps, extract comments, and get thumbnails — all 100% free. No signup required.
Everything You Need for YouTube Videos
5 powerful free tools to summarize, transcribe, download, and extract from any YouTube video. No signup required.
YouTube Transcript Generator
Full transcripts with timestamps
Get complete word-for-word transcripts from YouTube's captions instantly.
YouTube Comment Extractor
Download all comments as JSON
Extract all comments with replies, likes, and author info. Export to JSON.
YouTube Thumbnail Downloader
HD thumbnails in all sizes
Download thumbnails from 120×90 to 1280×720. JPG and WebP formats.
YouTube Video Summarizer
AI summaries with clickable chapters
Transform any video into structured notes with timestamps, key points, and quotes.
YouTube Subtitle Downloader
One-click SRT downloads
Download subtitles in SRT format. No API key required.
Built for Speed, Privacy & Simplicity
No accounts, no subscriptions, no data collection. Just free tools that work.
AI Video Summarizer
Get instant summaries with clickable timestamps and auto-generated chapters. Click any timestamp to jump to that moment.
Transcript Generator
Extract full transcripts from any YouTube video with accurate timestamps. Works with auto-captions in 100+ languages.
Privacy-First
Your data stays on your device. We never collect, store, or transmit personal information. You control your API key.
100% Free Tools
All tools are free with no hidden fees. Use your own Gemini API key with generous free tiers (1,500 req/day).
Perfect for Students, Researchers & Creators
Join 50,000+ users who save hours every week with our free YouTube AI tools.
Students
Turn lecture videos into study notes. Never miss a key concept again.
25,000+ active users
Researchers
Extract transcripts and citations from academic videos with timestamps.
8,000+ active users
Content Creators
Repurpose video content into blog posts, scripts, and social media.
12,000+ active users
Professionals
Summarize meeting recordings and training videos in seconds.
15,000+ active users
Get Started in 60 Seconds
No complicated setup. Pick a tool, paste your link, get results.
Choose Your Tool
Pick from 5 free YouTube AI tools. Online tools work instantly in your browser.
Paste Video Link
Copy any YouTube video URL and paste it into the tool. That's it.
Get Instant Results
Receive summaries, transcripts, comments, or thumbnails in seconds.
Save $200+/year with Free AI Tools
Other tools charge monthly fees. NoteLM.ai is 100% free because it uses your own Gemini API key — which Google provides with generous free limits.
Otter.ai
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1,200 min/mo
Fireflies
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Notion AI
$10/mo
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NoteLM.ai
$0 Forever
Unlimited use with free Gemini API
Frequently Asked Questions
Quick answers about NoteLM.ai's free YouTube tools
What is NoteLM.ai and what does it do?
NoteLM.ai offers free AI-powered tools to help you work with YouTube videos. Our tools include a video summarizer that creates notes with clickable chapters, a transcript generator for full text extraction, a comment extractor, a thumbnail downloader, and a subtitle downloader. All tools are free to use with no signup required.
Is NoteLM.ai free to use?
Yes, all NoteLM.ai tools are 100% free. The online tools (transcript generator, comment extractor, thumbnail downloader) work instantly in your browser. For the Chrome extensions (video summarizer, subtitle downloader), you'll need a free Gemini API key from Google, which provides 1,500 free requests per day.
How do I get a free Gemini API key?
Visit Google AI Studio at aistudio.google.com, sign in with your Google account, and click "Get API key". The free tier includes 1,500 requests per day and 15 requests per minute — more than enough for daily use. No credit card required.
How does the YouTube Video Summarizer work?
Our summarizer uses Google's Gemini AI to analyze video transcripts and generate structured summaries. It creates clickable chapters with timestamps, extracts key points and quotes, and lets you click any timestamp to jump directly to that moment in the video. Works with any YouTube video that has captions.
Can I get YouTube transcripts for free?
Yes! Our free YouTube Transcript Generator extracts full transcripts with accurate timestamps from any video with captions. Just paste the video URL and get the complete text instantly. You can copy or download as TXT or SRT format.
What YouTube thumbnail sizes can I download?
You can download YouTube thumbnails in 5 sizes: maxresdefault (1280×720 HD), sddefault (640×480), hqdefault (480×360), mqdefault (320×180), and default (120×90). Available in both JPG and WebP formats.
Is my data safe with NoteLM.ai?
Absolutely. We follow a privacy-first approach. Your API key is stored locally in your browser and only sent directly to Google's API. Our online tools process data in your browser. We never collect, store, or access your personal data or browsing activity.
What languages are supported?
The video summarizer outputs summaries in 70+ languages regardless of the video's original language. The transcript generator works with YouTube's auto-captions which support 100+ languages. You can watch videos in any language and get summaries in your preferred language.
Start Using Free YouTube AI Tools Today
Join 50,000+ users who save hours every week. Summarize videos, download transcripts, extract comments — all free.