BookLin — The Spirit of Books

The spirit of books, the bridge between humans and tomes. Inheriting the ancient way of deliberate reading, it distills wisdom from books with AI — talk to the book spirit and grasp core insights instantly.

Free Download Explore the Five Modules →

Distill books into conversational Agent skills

From documents to reusable skill packages — five modules connecting classic knowledge with agent runtimes.

Document Distillation Engine

Upload e-books, PDFs, policies, legal documents or classics. AI follows the ancient way of deliberate reading to extract knowledge and unpack logical frameworks, outputting standardized Skill Plugins — not just summaries, but knowledge packages your agents can call.

BookLin Agent Chat

Ask questions directly against distilled book skills with precise quotes from the source text — policies, statutes, classics — with follow-up questions and original-text tracing.

Skill Marketplace

Publish distilled book skills to the platform for team-internal or public sharing; others subscribe and load the same book knowledge in one click.

MCP Protocol Gateway

Native MCP support exposes book skills externally, ready for external agents and workflows to call — plugging into the agent ecosystem.

Model Adapter Layer

Bring your own LLM vendors and switch freely; both distillation and chat can run on the inference backend of your choice.

The spirit of books, the bridge between humans and tomes

Legend has it that book spirits lived among the pages, having read every classic, ready to answer any question within.

BookLin draws on this romantic image: it reproduces the ancient way of deliberate, critical reading and distills book knowledge automatically with AI. No need for tedious cover-to-cover reading — upload a book to extract its core logic, viewpoints and methods, then ask questions directly and get answers fast.

Distilled knowledge can be packaged as Agent skills and plugged into agent runtimes — so the wisdom sleeping in the pages talks to you anytime.

1 device, 1 license key

Each key binds to a device ID and can be unbound when you switch.

One-year validity

Works offline within the period and re-verifies automatically when online.

Local-first

Reading, narration, styles and blocking all run on your machine.

Simple, transparent licensing

Licensed per device, not per read. After purchase, claim your key from Settings and activate it in Booklin.

Free

Try reader mode and narration first

/ Trial

Reader mode
Basic narration
Ad blocking
1-device trial
Community support

Download Trial

Frequently Asked Questions

Where do I enter my license key?
Open the app and click the 🔑 button on the browser toolbar, then paste your key in the activation window and confirm. Full reader mode unlocks once activated.
Where can I find my device ID?
In the 🔑 activation window. After purchasing, sign in to the website, open Settings, enter the device code, and click Claim key.
Can I use my key on a new computer?
A key is bound to one device at a time. Unbind it on the old device first (or ask an admin to unbind), then activate on the new one.
Can I try before licensing?
Yes. Without a license, reader mode shows the first 50% of an article; everything else works normally. Enter a key to unlock the full text.
Does it work offline?
Yes. A signed credential is stored locally after activation, so it works offline within the validity period; it re-verifies with the server when online.
Do you collect my browsing data?
No. Reading, narration, ad blocking and favorites all run locally; only license verification submits your device ID and key.

Let the wisdom in the pages talk to you, anytime

Supports Windows 10/11. After purchase, claim a key in Settings and enter it in BookLin to unlock.

Get BookLin Licensing & activation guide