Glasp
What it is
Overview
A highlighting tool that captures text from web pages, PDFs, and YouTube videos, then feeds those highlights into an AI chat interface. Built as a wrapper with social discovery features — you can browse other users' public highlights and follow their reading patterns. The 2.8 million monthly visitors skew toward researchers, content creators, and students who want to turn scattered web reading into a searchable knowledge base.
At a glance
Usability & Quality overview
Best for
- Researchers
- Learners
- Users who want to highlight web pages and PDFs and turn them into AI notes
Watch out for
- Potential spam emails
- Auto-installation of the extension
- Mixed user opinions on core functionality (subtitles-to-LLM)
Built on another provider's modelResells a third-party model API
Goes beyond basic AI chat by adding social discovery of highlights from other users, plus workflow automation that turns web highlights into an organized AI memory system. Integrates across web pages, PDFs, and YouTube videos.
Moderate evidenceQuality score
Glasp is a functional AI knowledge management tool for highlighting and note-taking, but it suffers from significant user complaints regarding spam emails and auto-installation, leading to mixed user satisfaction.
Plans
Pricing
How free is free?
Free with limits
Good for casual use; daily users may hit PDF/chat limits
What you get for free
- Unlimited public highlights across web, PDF, YouTube, Kindle
- Basic YouTube summaries (3 per day)
- PDF uploads & summaries (30 files total)
- PDF chat (20 messages per month)
- Audio transcription & summaries (30 minutes per month)
- YouTube channel tracking (1 channel, 3 videos)
- Daily auto-sync/export to Notion
Behind the paywall
- Unlimited private highlightsPro
- Advanced YouTube summariesPro
- More PDF chat messages (500+/month)Pro
- Extended audio transcription (300+ minutes/month)Pro
- Multiple YouTube channel trackingPro
Community feedback
Aggregated reviews
Ratings and quoted comments below are aggregated from third-party sources and reflect those users' views, not SearchTools.ai's.
What reviewers talk about
themes inside the Sentiment pillar — not score ingredients
71Output Qualitythin data · 6 mentions
“Highlight the web and share the gist with peers. Learn from like-minded people. FREE to use. Glasp Chrome Extension is an easier and faster way to highlight text and leave notes on the web. With one click, the content you’ve collected appears across all your devices. 📚 Glasp bea”
“Together with other knowledge workers, writers, and creatives we as a community curate interesting material, that can sometimes be hard to find when you are working alone like me.”
“google_logo Play Games Apps Movies & TV Books Kids search help_outline Glasp: AI Summary & Highlight Glasp 3.2 star 168 reviews 50K+ Downloads Install Share Add to wishlist About this app arrow_forward Glasp turns everything you read and watch into knowledge you keep. Summarize ”
“Channel Local Audio Get YouTube Video Transcript & Summary The Best Free YouTube Video Summarizer Glasp is a free YouTube video summarizer that uses AI to instantly summarize any YouTube video. Paste a URL or use the Chrome extension to get summaries, key points, and full transc”
Capabilities
Key features
Knowledge Management
Captures, organizes, and surfaces team knowledge across your documents and notes
Web Scraping
Extracts structured data from websites and collects it for your use
Summarizer
Condenses long documents, articles, or transcripts into short, readable summaries
Chatbot
Holds conversations and answers questions through a natural-language chat interface
The honest take
What users love & flag
Distinct themes surfaced across 186 reviews from 4 sources — each grounded in real review text, ranked by how often it comes up.
Questions
Frequently asked
What is Glasp?
Glasp is a highlighting and knowledge management tool that lets you highlight content across web pages, PDFs, YouTube videos, and Kindle books, then automatically organizes everything into a searchable library. It includes a personal AI trained on your highlights that you can chat with to retrieve information and make connections between your saved content, plus social discovery features to learn from other users' highlights.
Is Glasp free to use?
Yes, Glasp offers a free plan with unlimited public highlights, basic YouTube summaries (3 per day), single channel tracking, 30 PDF uploads, 20 PDF chat messages monthly, and 30 minutes of audio transcription. Paid plans start at $12.50/month for the Pro plan with expanded limits and private highlighting options.
What types of content can I highlight with Glasp?
Glasp works across web pages, PDF documents, YouTube videos, and Kindle books through browser extensions and mobile apps. You can highlight text directly on these platforms, and Glasp will automatically organize your highlights by tags and authors in a centralized library.
How does Glasp's AI chat feature work?
Glasp's AI is trained specifically on your collected highlights and notes, creating a personal knowledge base you can query. You can ask questions and get answers grounded in your own saved content, generate summaries on demand, and discover connections between different pieces of information you've highlighted.
Can I export my Glasp highlights to other apps?
Yes, Glasp integrates with popular knowledge management tools including direct export to Notion, Obsidian, and Readwise. You can also export highlights as Markdown, CSV, and JSON files, and it supports importing from Kindle, Medium, Instapaper, and Hypothesis to consolidate your existing highlights.
What are Glasp's social discovery features?
Glasp allows you to discover content through community recommendations and follow other users' learning paths to see their highlights on similar topics. This creates opportunities for collaborative knowledge sharing and helps you find relevant content through what like-minded learners are highlighting.
How do YouTube summaries work in Glasp?
Glasp generates AI summaries for YouTube videos that display directly on video pages with customizable prompts. The free plan includes 3 basic summaries per day, while paid plans offer advanced summaries with higher monthly limits (1,000 for Pro, 5,000 for Unlimited).
What platforms is Glasp available on?
Glasp is available as a web tool, browser extensions, and mobile apps for Android and iOS. There's also a Mac version available, allowing you to highlight and organize content across different devices and platforms.
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