Key features
- highlight text on any website
- highlight and annotate PDFs
- AI-powered YouTube video summaries
- integrates with ChatGPT, Claude, and Gemini for summaries
- centralized view of saved highlights
What Glasp does
Glasp is a highlighter that works on regular web pages, PDF documents, and YouTube videos. Instead of just marking text, it also uses AI to summarize what you're reading or watching, drawing on models such as ChatGPT, Claude, and Gemini. Highlights are saved in one place so you can revisit them later instead of hunting through open tabs.
Glasp free vs paid
The extension is free to install and use for highlighting websites and PDFs. AI summary features depend on the underlying model connections, so how much you can use may be tied to your account tier or the AI service's own limits rather than a separate Glasp subscription.
Is Glasp safe?
Because Glasp highlights and summarizes content on the pages and videos you visit, it needs permission to read that content. This is standard for any highlighting or summary tool and is required for the extension to function. Only grant access if you're comfortable with an extension reading the pages you highlight.