Chrome extension for Kindle Cloud Reader

BookHalo

Turn Kindle books into AI-ready reading notes

BookHalo processes the visible pages of a book in Kindle Cloud Reader and bundles OCR-created full_text.txt with a reference PDF. Use the ZIP with NotebookLM, ChatGPT, or Claude for personal reading notes and study.

Try it free

Add it to Chrome and test up to 3 pages of a book for free

Windows / Mac

BookHalo processing an English book in Kindle Cloud Reader — **Capture, OCR, and download in one flow** Skip the folder of screenshots and the separate OCR step. BookHalo gives you completed text and a reference PDF together.

TXT + PDFAI-ready text and visual reference

Local OCROCR that normally runs in Chrome

7 languagesExtension and website interface

BookHalo

Prepare the book for a real AI reading workflow

BookHalo does more than save page images. It produces files you can search, review, and ask questions about.

Capture, OCR, and export together

Open a book in Kindle Cloud Reader and start BookHalo. Page turning through ZIP creation happens in the same workflow.

AI-ready TXT + reference PDF

Search full_text.txt, then use the reference PDF to check tables, figures, and page layout.

Ready for AI-assisted reading

Use the output as personal reading material in NotebookLM, ChatGPT, Claude, or your own note system.

Books in multiple languages

Choose the book's language and BookHalo handles the text conversion for you.

Japanese vertical text support

Turn vertical or horizontal Japanese books into reading notes.

Two-page spread support

When two pages are shown together, BookHalo separates them and preserves their reading order.

01 → 03

From Kindle book to usable files

Open a book you can read, choose its language, and let the workflow finish.

1
Open the book in your browser
Open a book you can lawfully access on a supported Kindle Cloud Reader / Kindle for Web domain.
2
Choose the book language and start
Select the language of the book in the BookHalo popup, then press Start.
3
Download the completed ZIP
When processing finishes, download the ZIP containing OCR text and a reference PDF.

BookHalo processing an English Kindle book

Full plan

Pricing

Start with 3 pages to see how BookHalo works with your book and reading workflow.

$12.99 / month

Up to 10 books per month and 1,000 pages per book. Subscribe inside the extension after email verification.

The free plan includes 20 books per month with 3 pages each.

Add to Chrome

NotebookLM / ChatGPT

AI reading guides

Practical ways to use the TXT with NotebookLM, ChatGPT, and other reading tools.

Use Kindle books in NotebookLM

Create a personal reading source, check the text, and ask questions tied to the book.

OCR for Kindle Cloud Reader

See how BookHalo handles visible pages and produces text plus a reference PDF.

Save Kindle pages as plain text

Use full_text.txt for search, notes, and personal study workflows.

Use Kindle books with ChatGPT

Turn pages into text, then summarize, outline, and ask ChatGPT about what you read.

Use Kindle books with Claude

Bring your reading notes into Claude for summaries, outlines, and follow-up questions.

Read Japanese Kindle books with AI

Build vocabulary lists and study notes from Japanese pages you can already open.

01 → 04

How it works

Four steps from installation to completed files.

01
Add BookHalo to Chrome
Install BookHalo from the Chrome Web Store and keep it available from the toolbar.
02
Sign in by email
Enter the verification code sent to your email, then choose the language of the book.
03
Open the book and start
Open the book in Kindle Cloud Reader and press Start. Keep the same tab visible while BookHalo works.
04
Review the ZIP
Open the downloaded ZIP, send full_text.txt to your AI tool, and use the reference PDF to verify text and figures.

While BookHalo is working

Do not switch tabs or windows during processing. It can affect page capture.
Kindle sample and preview books are not supported.
Desktop Google Chrome or a Chromium-based browser is required.

For personal reading notes

Commercial use, redistribution, resale, or public sharing of outputs is prohibited.
Use BookHalo only with books you can lawfully access, for personal reading notes and study support.
Output files include a traceable Export ID to discourage unauthorized sharing.
BookHalo is not affiliated with or endorsed by Amazon or Kindle and is not designed to remove DRM or bypass access restrictions.

FAQ

Frequently asked questions

Which Kindle books can I use?

BookHalo supports 20 Kindle for Web domains across Japan, North America, Europe, Brazil, Mexico, India, and Australia. You can use books that open in a browser on one of those domains. Kindle app-only titles and sample books are not supported.

What files does BookHalo create?

BookHalo bundles OCR-created full_text.txt and a reference PDF of the processed pages into one ZIP file.

Which OCR languages are supported?

English, Portuguese, Spanish, French, German, and Italian normally run locally in Chrome, with server fallback if local OCR fails. Japanese uses server OCR for vertical and horizontal text.

Can I use the files with NotebookLM or ChatGPT?

Yes, for personal reading notes and study support. You should also follow the terms of the AI service you use.

Can I try BookHalo for free?

Yes. The free plan includes 20 books per month with 3 pages each. The full plan uses regional monthly pricing for 10 books with up to 1,000 pages each.

Can I use BookHalo on a phone or in the Kindle app?

No. BookHalo is a desktop Chrome extension and does not run in mobile browsers, on tablets, or inside the Kindle app.

What copyright and terms restrictions apply?

BookHalo is intended for personal reading notes and study with books you can lawfully access. Publishing, distributing, or selling the output is prohibited. Follow Amazon's terms, the AI service's terms, and applicable law.