What is Glasp?
Glasp is an AI annotator that lets you highlight and add notes to web pages, PDFs, and YouTube videos directly inside your browser. Highlights save to your account and sync across devices through Chrome, Safari, Edge, Firefox, iOS, and Android. The tool also builds a personal AI clone trained on your saved highlights and notes, which you can chat with for recall and recommendations. Glasp covers reading, video, and audio sources, but it does not function as a standalone note-taking app or document editor.
Features & Benefits
- Web & PDF Highlighting — Mark passages on any webpage or PDF and attach written notes to each selection.
- YouTube Video Highlights — Capture timestamped quotes from videos and add notes tied to specific moments.
- Image Highlighting — Save images from pages into your highlight library alongside text selections.
- AI Summaries — Generate summaries of webpages, PDFs, and YouTube videos through the built-in AI annotator features.
- Audio Transcription — Convert audio files to text and produce AI summaries of the transcripts.
- AI Clone Chat — Ask questions against your own highlights and notes to surface past ideas and get suggestions.
- Quoteshots — Turn saved highlights into shareable image cards for social posts.
- Tag & Author Organization — Sort highlights by tag and author, then search across your library later.
- Knowledge Graph — Track reading activity and see connections between saved sources over time.
- Social Discovery — Follow other users and read their public highlights to find new material.
- Kindle Daily Review — Pull Kindle highlights into Glasp and resurface them on a daily schedule.
- Imports — Bring in existing highlights from Pocket, Medium, Instapaper, Readwise, Snipd, and Hypothesis.
- Exports — Send highlights to Notion, Roam Research, and Obsidian, or download as Markdown, HTML, CSV, or JSON.
- Cross-Device Sync — Keep highlights and notes consistent across desktop browsers and mobile apps.
- Public Sharing Links — Share highlight pages that anyone can open without a Glasp account.
- Private Highlights — Keep selected annotations visible only to you.
Real-World Applications
Researching a long-form topic across dozens of articles often leaves key passages scattered and hard to retrieve. Glasp can pull those quotes into one library, tag them by theme, and surface them through the AI clone when a related question comes up weeks later. Exports to Obsidian or Notion let the same notes feed into a longer writing project.
Studying from YouTube lectures may involve rewinding to find a specific explanation. Timestamped highlights can mark the exact moment a concept appears, and AI video summaries give a fast overview before a closer second pass. Notes attached to each clip can hold questions to revisit.
Reading on Kindle and across Medium or Pocket tends to fragment a personal library. Imports consolidate those highlights inside one AI annotator, and the daily review feature brings older material back into rotation. This can support spaced repetition without a separate flashcard app.
Sharing reading lists with a study group or newsletter audience can rely on public highlight pages and quoteshots. Followers may browse the highlights without signing up, which lowers friction for collaborators who want the source quotes rather than a written summary.
Building a long-term knowledge base across years of reading often runs into format lock-in. Markdown, HTML, CSV, and JSON exports keep the data portable, and the knowledge graph offers a visual map of how saved sources connect across topics and authors.
