Launched 2021 · Verified Oct 29, 2026

Glasp

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Note-taking & Second Brain Write a reviewUnited StatesEffect1/ 100

Highlighter for web pages, PDFs, YouTube and Kindle that collects your passages in one library and lets you chat with them.

web highlighterpdf annotationyoutube summarysecond brain mcpread laterFreemium · from $12.5/mo

Listed on EffectHub · Oct 29, 2026

Web · Chrome extension · iOS · Android · API

Pricing

Pricing model: Freemium
Paid options from: $12.50/mo
Billing: Monthly

Highlighting is free with limited AI (3 on-video YouTube summaries per 7 days, some chat credits, 30 minutes of transcription a month); Pro is $12.50/month billed yearly ($150/year) or $15 month-to-month, Unlimited $360/year. Private highlights require a paid or student plan.

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Overview

About Glasp

Glasp is a browser extension and mobile app for highlighting text on articles, PDFs, YouTube transcripts and Kindle books, with each passage saved alongside its source, author, URL and date. Highlights land in one searchable library sorted by tag and author, and sync or export to Notion, Obsidian, Roam, Markdown, CSV and JSON. The AI layer summarises articles, PDFs and videos, answers questions grounded in what you have saved, and an MCP connector hands your highlights to ChatGPT or Claude. Highlights are public by default, which powers a social feed of what other readers mark. It is made by Glasp Inc. in San Francisco.

Platforms: Web · Chrome extension · iOS · Android · API
API: Yes
Last verified: Oct 29, 2026

Verified sources

Free, Pro ($12.50/mo yearly, $15 monthly) and Unlimited plans, free-plan AI limits, public-by-default highlightsglasp.co ↗
Web, PDF, YouTube and Kindle highlighting, chat with highlights, MCP connector, integrations, mobile appsglasp.co ↗
Founded 2021 by Kazuki Nakayashiki and Kei Watanabe, headquartered in San Franciscoglasp.co ↗

Fact check

Is Glasp legit?

We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.

TLS certificate: Issued by Google Trust Services, valid until Jan 19, 2027Seen in our own connection to the site on Oct 29, 2026
Last checked: Oct 29, 2026The site answered, but turned our crawler away
On the market since: 2021The vendor's own material, read by us
Operated by: Glasp Inc., United StatesOur research, card verified Oct 29, 2026

How we collect these records

Editorial verdict

Pros & cons of Glasp

high confidence

Glasp fits students, researchers and writers who read a lot online and want every quote kept with its source and searchable later. People who want their reading private by default, or who mostly need a full note editor rather than a highlighter, should look elsewhere.

Pros

Free plan keeps unlimited highlighting plus exports and Notion sync
Works across Chrome, Safari, Edge, Brave, Firefox, Opera and mobile
Each highlight keeps its source metadata, so quotes stay cited
MCP connector and API make the library usable from other AI tools

Cons

Highlights are public by default; privacy is a paid feature
Free AI allowances are small, especially video summaries
Social feed is of limited use to people who read alone

Best for

Students and researchers collecting cited passages across the web and PDFs
Writers keeping a swipe file of quotes for drafting with ChatGPT or Claude
Readers who want Kindle and web highlights in one library

Not for

Anyone who needs highlights private without paying
Users who want a full note-taking editor with documents and databases

Watch out: Highlights are public unless you are on Pro, Unlimited or the free university Student plan, and the pricing FAQ states that cancellations are not refunded except where law requires.

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