Discuss webpages with your reading companion and cognitive twins, save private copies, and structure your knowledge.
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Version
0.6.0
updated 10 Oct 2026
About bookjumper
Turn what you read into knowledge you can return to.
Ask questions about an article while you read. Save useful pages for later. Connect ideas and build a knowledge library of your own.
bookjumper brings conversation, saving, and knowledge organization into your browser, right where your reading happens.
CONVERSATION — Explore the page with a reading companion
Discuss the current webpage with your reading companion, cognitive twin card, or cognitive twin avatar. Explore the whole article or focus on a selected passage. Ask for explanations, compare viewpoints, and work through unfamiliar concepts.
Attach the current screen when you want to discuss an image or chart. Choose text or real-time voice, move and resize the conversation window, or minimize it to your character’s image while you keep reading.
SAVE — Keep more than a bookmark
Save the captured page text, tables, source URL, and capture time, with an optional screenshot. Connect the same account on another device to revisit your private saved pages and continue reading.
STRUCTURE — Build a knowledge library from your reading
Organize a page into a summary, concept explanations, an outline, and relationships between ideas. Check the supporting source passages, edit the result, and confirm what you want to add to your knowledge library. Supplementary information is labeled separately from source content.
Use bookjumper to study a new subject, explore work-related research, or follow a topic that interests you—one page and one conversation at a time.
Available in English, Simplified Chinese, French, Japanese, and Spanish, with an interface language switcher.
BEFORE YOU START
• A Bookjumper global account is required.
• Cognitive twins use the characters, images, and voice settings already available in your account.
• AI features depend on account permissions and your BT credit balance. Some features may require payment.
• Page content is accessed only when you take action. Relevant text, selected passages, and optional screenshots are sent to the service when you request a conversation, save, or structure content.
• Real-time voice uses the microphone only after you enable voice mode and grant permission.
• AI responses can contain mistakes. Check important information against the source.