Social Web & PDF Highlighter

Highlight the Web &
build your AI memory

Highlight anything on any page or PDF, keep what matters in one place, and turn it into an AI that thinks with your own ideas.

4.5 on Chrome Store1M+ highlightersChrome · Safari · Edge
How to do great work

The first step is to decide what to work on. The work you choose needs to have three qualities: it has to be something you have a natural aptitude for, that you have a deep interest in, and that offers scope to do great work.

In practice you don't have to worry much about the third criterion. Ambitious people are if anything already too conservative about it. So all you need to do is find something you have an aptitude for and great interest in. [1]

Highlights & Notes
4

The work you choose needs to have three qualities: a natural aptitude, a deep interest, and scope to do great work.

The first step is to decide what to work on.

Develop a habit of working on your own projects.

Start one this weekend

Curiosity is the best guide, and an especially reliable one.

1,000,000+

researchers, students, and lifelong learners highlight with Glasp.

ForbesThe GuardianBusiness InsiderEntrepreneurLifehackerMakeUseOf
From a stray idea to lasting knowledge

How Glasp works, in three steps

  1. 01

    Highlight

    Select text on any webpage, PDF, YouTube video, or Kindle book. Add a note while it's fresh.

  2. 02

    Organize

    Everything lands in one library, sorted by tag and author, searchable in seconds.

  3. 03

    Recall with AI

    Chat with your highlights, get summaries, and let your AI memory resurface what matters.

One highlighter, everywhere you read

Capture an idea, then do more with it

Highlights on the web, PDFs, YouTube, and Kindle — organized, searchable, and ready to share or hand to your AI.

Web & PDF

Highlight directly on any page or PDF

Select text in Chrome, Safari, or Edge and it's saved with a note. Works on articles, PDFs, YouTube, and Kindle.

Highlighting text on a webpage with Glasp
Highlighting text in a PDF with Glasp
YouTube

Clip videos with timestamps

AI memory

Chat with your highlights

Ask questions and get answers grounded in everything you've saved.

Chatting with an AI built from your highlights
Import

Bring in Kindle

Kindle, Medium, Snipd, Instapaper, Hypothesis, and more — all in one library.

Organize

Tag, search, revisit

Sort by tag and author, and find any highlight in seconds.

Export

Send to your notes app

Notion, Obsidian, Roam — or Markdown, CSV, and JSON.

Community

See your learning, find like minds

A knowledge graph maps what you read, and follows people who highlight the things you care about.

A Glasp profile with a knowledge graph
No lock-in, ever

Plays well with your stack

Bring highlights in from where you read, and send them out to where you think. Your data stays yours.

Import from
Kindle
Snipd
Readwise
Medium
Instapaper
Hypothesis
Weava
CSV
Export to
Notion
Obsidian
Readwise
API
MCP
MarkdownHTMLCSVJSON
Works in every browser
Chrome
Safari
Edge
Brave
Firefox
Opera
Rebuilt in 2026Mobile

Your highlights, now in your pocket

The Glasp app was rebuilt from the ground up for iOS and Android, with a faster, calmer reading experience.

  • A native Reader for distraction-free reading & highlighting
  • YouTube Summary on the go
  • A home-screen widget for your daily review
  • Highlight in mobile Safari with the web extension
Download on the App StoreGet it on Google Play
Highlighting an article in the Glasp mobile app

"I love Glasp! I use it every time I read online articles. Highlighting with Glasp enforces me to actually read rather than scan through an article. I retain so much more info and can easily revisit my previously read articles to recall details and notes I've made."

Olive

Olive

Product Designer

"I've researched every highlighting tool from Liner and Hypothesis to Instapaper and Pocket, and Glasp is the best hands-down. First, it creates a whole category of its own with social highlighting. This is important because it helps learners get recognized for finding amazing highlights, and it helps them connect with others who..."

Michael Simmons

Michael Simmons

Bestselling Author

"I used Instapaper but ended up hating it and stopped. There just wasn't a tool for me to continue using until Glasp. I was hooked immediately for the ease of use (highlight directly on the article web page), organized feed, and learning from others' highlights and notes. It makes sticking to learning something so easy and you..."

Puppy Tsai

Puppy Tsai

Product Manager

"I love the way Glasp is always there while I'm reading articles on the web ready to help me remember key phrases or interesting ideas. The interface looks like Tumblr meets Google Reader. It's always full of fresh and interesting things that struck someone else as valuable. What a wonderful place to visit!"

Jason Shellen

Jason Shellen

Founder & Advisor

"Glasp drastically reduces the time for note-taking for me. I needed a common platform to keep references and notes, where everyone could seamlessly collaborate. In any situation that requires collaboration, oftentimes, it acts as a references repository for our knowledge base. It allows me to keep my notes easily accessible to..."

Rudram

Rudram

Product Manager

"Glasp is such a meaningful product! It helps me focus and think deeply on the content that resonates with me the most, and share my thoughts with friends and colleagues effortlessly by simply highlighting the content that I love. I’m constantly inspired by everyone’s highlights, shared articles, and resources from Glasp’s..."

Snow Huo

Snow Huo

Startup Founder

"As someone who has been following the GTD, Zettelkasten, PKM, Second Brain, zettelkasten ways of working, Glasp helped me shift from following to doing.  It acts as a forcing function, motivating me to think through what stood out, why it stood out, and to categorize it according to what I'd be interested in learning more about...."

Moe

Moe

Designer & Content Writer

"Glasp has been a lifesaver! It helps me quickly refer to important parts of articles I need to come back to for assignments as well as work. With it, I’ve been more organized and productive! I also often discover useful articles and resources that friends have been reading."

Ananya

Ananya

Content Creator

"Glasp is a habit now. It helps me build an archive of the most interesting ideas I come across online. It's a wonderful tool that makes me read with more attention and allows me to discover great insights from all kinds of interesting users."

Thiény Konaté

Thiény Konaté

Agency Founder

"Glasp makes it easy for me to remember what I read and watch on a daily basis. The app is always ready to let me highlight the important passages and create notes. Exporting the higlights is as easy as using a one-click button to paste it to my Obsidian vault. Glasp not only has these features but it also functions as a..."

Nic Yap

Nic Yap

Technical Writer

Why Glasp

A highlighter that's social and AI-native

Most highlighters lock your notes in a private vault. Glasp is free, shareable without a login, and turns what you save into an AI you can actually talk to.

CapabilityGlaspTypical
Highlight web, PDF, YouTube & Kindle
Free, unlimited highlights
Share without login + embed anywhere
Chat with a personal AI from your notes
Use your highlights inside ChatGPT & Claude (MCP)
Export to Notion, Obsidian, Markdown
Answers

Frequently asked questions

What is Glasp?

Glasp is a free social web and PDF highlighter. You highlight anything on the web, PDFs, YouTube, and Kindle, keep it organized in one place, and turn it into a personal AI memory that summarizes and answers from your own ideas.

Is Glasp free?

Yes. Highlighting, organizing, and exporting are free for everyone. Glasp Pro adds unlimited private highlights for people who want to keep insights to themselves.

How do I highlight a PDF or webpage?

Add the Glasp extension to Chrome, Safari, or Edge, then select any text and click highlight. You can add a note, and it syncs across your devices automatically.

Can Glasp summarize YouTube videos?

Yes. Glasp generates AI summaries and transcripts of YouTube videos, and lets you highlight moments with timestamps.

Does Glasp have a mobile app?

Yes. The iOS and Android apps were rebuilt in 2026 with a native Reader, YouTube Summary, and a home-screen widget, plus a Safari mobile extension for highlighting on the go.

Can I export my highlights to Notion or Obsidian?

Yes. Export to Notion, Obsidian, and Roam Research, or download as Markdown, HTML, CSV, or JSON.

Can I import highlights from Kindle or Medium?

Yes. Import from Kindle, Medium, Instapaper, Snipd, Hypothesis, and more, then review them daily.

How is Glasp different from other highlighters?

Glasp is social and AI-native: your highlights are shareable without login, feed a personal AI you can chat with, and connect to AI tools through the MCP connector.

Can I use my highlights inside Claude or other AI tools?

Yes. The Glasp MCP connector exposes your highlights to Claude and other AI clients so they can answer using what you've saved.

More questions? Read the docs or email hi [at] glasp.co.

Collect ideas worth sharing

Add Glasp to your browser and start highlighting the web today. It's free.