What is it

Glasp is a social PDF and web highlighter shipped as Chrome and Safari extensions, used by 1,000,000+ readers. Beyond the highlighter, Glasp builds a personal "AI clone" from a user's saved highlights and notes that the user can chat with, plus a learning feed that surfaces what like-minded readers are highlighting. Sold in three tiers: Free, Pro ($12.50/mo billed yearly), and Unlimited ($30/mo billed yearly).

What it can do

Highlight text on web pages, PDFs, YouTube videos (with timestamps), Kindle books, and images; auto-generate Basic and Advanced YouTube summaries using a selectable model (ChatGPT, Claude, Google AI Studio, Gemini, or Mistral); summarize and chat with PDFs; transcribe and summarize audio; import highlights from Kindle, Pocket, Medium, Instapaper, Readwise, and Snipd; export to Notion (daily auto-sync on paid plans), Obsidian, Roam Research, Readwise, Markdown, HTML, CSV, or JSON; track YouTube channels for new videos; create shareable Highlight Quoteshots; and navigate a personal knowledge graph.

Who is it for

Researchers, writers, students, lifelong learners, and PKM (personal knowledge management) practitioners who already work across articles, PDFs, YouTube, and Kindle, and want a single highlighter that doubles as a social discovery feed and a personal-AI memory layer.

Key Features

Web, PDF, and Image Highlighter

Highlight text directly on any web page or PDF inside Chrome or Safari and add notes per highlight. Works on YouTube (with timestamps), Kindle, and images. Highlights are public by default — that is the social half of the product — and Private Highlights unlock on Pro and Unlimited for content the user wants to keep off the feed.

AI Clone – chat with your highlights

Glasp builds a personal "AI clone" from a user's highlights and notes. The user can chat with this clone to get personalized insights, synthesize across saved material, and surface forgotten reading. Glasp markets the clone as a "digital legacy" that learns from the user's reading life rather than a generic chatbot.

YouTube Highlights with Timestamps and Notes

Highlight specific moments of YouTube videos with timestamps and add notes — useful for talks, course videos, and interviews where the exact moment matters. Highlights can be shared with friends and surface in the social feed.

Basic and Advanced YouTube Summaries

Basic YouTube Summaries generate concise text overviews of any video using a user-selectable model (ChatGPT, Claude, Google AI Studio, Gemini, or Mistral). Advanced YouTube Summaries display the summary directly on the video page as the video plays, with customizable prompts. Free allows 3 basic summaries/day; Pro allows 1,000 advanced/month; Unlimited allows 5,000 advanced/30 days.

Use Cases

Daily web reading with retained highlights

Use the Chrome or Safari extension while reading articles, blog posts, and newsletters; highlights and notes are saved to a personal library that survives across devices and feeds the user's AI clone.

Summarizing long YouTube talks and interviews

Drop a YouTube link or open a video, generate a basic or advanced AI summary with the chosen model, and timestamp-highlight the parts worth returning to.

Reading and chatting with academic PDFs

Upload a research paper or report, highlight it inline, and use PDF Chat to ask follow-up questions ("explain section 4," "what's the dataset size?") without leaving the document.

Reviewing Kindle highlights daily

Import Kindle highlights into Glasp and let the daily-review surface them back so book takeaways don't get buried in the Kindle app.

Pricing plans

Frequently Asked Questions

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