Highlight text and images while keeping the source context.
A browser extension designed for deep reading
Save your time for what is truly worth reading
Not to collect more, but to understand more deeply and remember for longer.
Across the web, online PDFs, YouTube, and Bilibili, highlight text, images, and video frames, then use notes, tags, and collections to turn what matters into knowledge of your own.
Understand an article—and remember why it matters
What is truly worth reading should stay findable in the source and in your own knowledge.
Highlight, think, and organize without leaving what you are reading
Stay in the deep-reading flow
Add highlights directly to content. Build knowledge in the side panel.
Stay with what you are reading: mark an important passage, image, or video frame, write down why it matters, then search and revisit it in your library.
Highlight text or capture a selected area as an image.
Save the current video frame and add your own notes.
Capture video frames and organize them with web sources.
From highlights to structure
Organize your documents with collections
Group web pages, PDFs, and videos by topic. Add one item to multiple collections, then use search, tags, and notes to turn scattered highlights into knowledge you can revisit.

Designed around deep reading
Keep your flow—and the context
Every feature supports one complete path: notice and think in the source, organize in the browser side panel, and take your notes with you when needed.
Highlight across media
Capture text, images, and video frames in one click, including highlights inside PDFs.
Notes, tags, and collections
Add your thinking, then shape a system that fits you with tags and collections.
Search and revisit
Search, filter, sort, and reopen saved sources from the extension side panel.
Export anytime
Take notes out as Markdown or a long image for easier saving and sharing.
Annotate offline
Keep working when the connection drops and sync automatically when it returns.
Clear data boundaries
Understand permissions and data use so your personal library stays under your control.
Start with the next thing worth reading
Collect less. Finish what is worth reading.
Install the browser extension, highlight and annotate in the source, then organize what truly matters.