Glasp

Social web highlighter that turns your web, PDF, and YouTube highlights into shareable AI-powered knowledge.

Data verified Sep 9, 2026

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Score

Price: $12.50/mo
Try it free: Free plan
Best for: Students & Researchers

About Glasp

Glasp is a browser-extension and web app that lets you highlight and annotate web pages, PDFs, YouTube transcripts, and Kindle books, then organize, summarize, and export those highlights to note-taking apps. It's built for knowledge workers, students, researchers, and content creators who want a visible, shareable learning log rather than a private silo. What most differentiates it is the social layer: alongside AI summaries and a chatbot trained on your own highlights, you can follow like-minded people and discover what others are highlighting.

Commonly Cited Strengths & Limitations

Strengths

Highlighting works reliably across web pages, PDFs, and YouTube transcripts
Unique social learning layer to discover and share others' highlights
AI summaries plus a personal chatbot trained on your own notes
Generous free tier with no credit card required
Easy and intuitive to use
Wide range of export options and integrations (Notion, Obsidian, etc.)

Limitations

No dedicated mobile app
Highlights default to public, making it a poor fit for private research
Limited customization (only text size and color)
Audio transcription works poorly for non-English languages
Per-feature limits on the free tier
Reported Google sign-in / login errors
Some users feel it strays from its core purpose while glitches go unfixed

Common Use Cases

Collaborative and academic research
Building a personal knowledge base / second brain
Content creation and curation
Learning and note-taking from articles, PDFs, and videos
Exporting Kindle highlights to note apps

Details

Pricing Model: Freemium
Starting Price: $12.50/mo
Founded: 2021
Headquarters: San Francisco, CA, USA
Category: Productivity & Automation

Who is Glasp for?

Students & Researchers

Highlight and annotate articles and PDFs and use AI summaries to speed up academic and collaborative research.

Content Creators

Collect quotes and ideas across the web and turn them into shareable quoteshots and curated learning logs.

Knowledge Workers

Build a searchable second brain from highlights and query it with a personal AI chatbot.

Frequently Asked Questions

Is Glasp free?

Glasp offers a free plan, with paid plans starting at $12.50/mo.

Does Glasp have an API?

Yes, Glasp provides an API for developers.

What does Glasp integrate with?

Glasp integrates with Notion, Obsidian, Readwise, Roam Research, Logseq, Evernote, Apple Notes, Google Keep, and more.

Is Glasp cloud-based or self-hosted?

Glasp is offered as a cloud-based (SaaS) deployment.

What are the downsides of Glasp?

No dedicated mobile app Also, Highlights default to public, making it a poor fit for private research

Who is Glasp best for?

Glasp is best suited for Students & Researchers, Content Creators, Knowledge Workers.

What can I use Glasp for?

Common uses for Glasp include collaborative and academic research, building a personal knowledge base / second brain, content creation and curation, learning and note-taking from articles, pdfs, and videos.

What is the best alternative to Glasp?

Our reviewed alternatives to Glasp are Readwise, Obsidian and Marqly.

How does Glasp compare to PromptDrive.ai?

Glasp and PromptDrive.ai are both used for productivity & automation -- specifically knowledge management tools. See the full side-by-side comparison for pricing and feature differences.

Glasp alternatives we reviewed

Reviewed when this listing was published; open-source options are marked.

See all reviewed alternatives →

Readwise
Highlight-capture and spaced-repetition review tool that syncs across sources and note apps.
Visit site →
Obsidian
Local-first knowledge base that Glasp highlights can be exported into.
Visit site →
Marqly
Bookmark and web highlighter alternative for saving and organizing content.
Visit site →