What is Find Books?

Simply enter a book title, author name, or ISBN code to automatically retrieve book information from databases. This saves the trouble of manually entering book title, author, and page count, making it easy to register accurate information.

Main Features

  • Search by Title Just enter part of a book title to search for matching books. Example: "Hemingway" "Great Gatsby" etc.
  • Search by Author You can also search for books by author name. Easily find works by your favorite authors.
  • Search by ISBN Code Enter an ISBN code (13 or 10 digits) to get accurate information for that specific book.
  • Auto-fill When you select a book from search results, the title, author, and page count are automatically filled in.

How to Use

1. the [Search] button on the book info edit screen
Press the [Search] button that appears when adding a book or editing an existing book.

2. Enter title, author, or ISBN
Enter book information in the search box. Partial matches also work.

3. Select from search results
Choose the book you want to register from the displayed search results.

4. Auto-fill complete!
Title, author, and page count are automatically filled in. Make adjustments as needed.

Screenshot of book search dialog showing search box and search results list with title, author, and cover images

Search Tips

  • Partial match search You can search with just part of the title (e.g., "Galaxy" finds "Night on the Galactic Railroad")
  • First or last name only works Example: "Hemingway" will show Ernest Hemingway's works
  • Barcode number is most accurate Searching with the 13-digit number on the book's back cover gives the most accurate identification
Photo of ISBN barcode on back cover of a book showing the 13-digit barcode number

Important Note

When book titles are updated via database search, sort order may change

For example, if you registered a book with the abbreviated name "How to Win Friends" and a database search updates it to "How to Win Friends and Influence People", if sorting by title, the display position will change from the "H" section for "How" to potentially a different position.

Your book data is not deleted. You can find it using search or re-sorting.

Search Options Paid Plan Only

For databases marked with Auto, you can directly apply book information from search results.

Search by Title + Author

Search using both title and author name. Gets the most accurate results.

Search by Title Only

Search by title only. Useful when the author is unknown.

Search by Author Only

Search by author name only. Useful for finding other books by the same author.

Select from Candidates

Select from the candidate list to retrieve title, author, cover image, and more all at once.

Cross-Bookshelf Search Paid Plans Only

Search across all reading notes registered in your bookshelf. Quickly find books or notes scattered across multiple files.

✨ Key Features

  • 📚 Search Multiple Files at Once Search across all reading note files (.rfnote) registered in your bookshelf. Even if you organize files by year or category, you can search them all at once.
  • 🔍 Comprehensive Search Targets Search across book titles, author names, reading notes, comments, and all other fields.
  • 📍 Jump Directly from Search Results Click a search result to open the file and scroll to the matching section with highlighting.

🎯 How to Use

1. Open the search modal with Ctrl+F (or ⌘+F)
Use the keyboard shortcut to open the search screen.

2. Check the "Search Bookshelf" checkbox
Enable the "Search Bookshelf" option at the bottom of the search modal.

3. Enter your search term
Type your search query to search across all files in your bookshelf.

4. Click a result to jump
Click an item in the results to open that file and view the matching section.

💡 Use Cases

  • Find Quotes Quickly find "which book mentioned this phrase."
  • List Author's Books Search for all books by a specific author across all your files.
  • Search by Theme Gather notes on a specific topic from multiple files.

Prerequisite: To use cross-bookshelf search, you need to register reading note files in the Bookshelf feature first.

Japanese Databases

📖

OpenBD Auto

Japanese Book Database (ISBN Search)
Japan

Open database of bibliographic information and cover images provided by publishers. Get accurate book information and high-quality cover images from ISBN.

Title Search ✗ Author Search ✗ ISBN Search ✓

Available Information

  • Title, Author
  • Publisher, Publication Year
  • Cover Image (High Quality)
  • Price, Page Count
🏛️

National Diet Library Auto

Japan's Largest Book Collection Database
Japan

Database of the national library where all books published in Japan are registered. The most comprehensive source of Japanese book information.

Title Search ✓ Author Search ✓ ISBN Search ✓
🎓

CiNii Books Web

University Library Collection Search
Japan

Database for searching books held by Japanese university libraries. Ideal for finding academic and specialized books.

Title Search ✓ Author Search ✓ ISBN Search ✓
📚

Calil Web

Nationwide Library Collection Search
Japan

Search collections and availability of over 7,000 libraries across Japan. Quickly find out if you can borrow from a library near you.

Title Search ✓ Author Search ✓ ISBN Search ✓

International Databases

📚

Google Books Auto

World's Largest Book Database
International

One of the world's largest book databases provided by Google. Supports some Japanese books and can retrieve cover images.

Title Search ✓ Author Search ✓ ISBN Search ✓
📕

Open Library Auto

Free Database with 20+ Million Books
International

Free library project operated by Internet Archive. Primarily features English books, and some can be read for free.

Title Search ✓ Author Search ✓ ISBN Search ✓
🌍

WorldCat Web

Worldwide Library Cross-Search
International

Search collections of over 10,000 libraries across 170 countries. Find books held by libraries around the world.

Title Search ✓ Author Search ✓ ISBN Search ✓

National Libraries

🇺🇸

Library of Congress Auto

U.S. Library of Congress
USA

The world's largest library. Contains information about books published in America and books from around the world.

Title Search ✓ Author Search ✓ ISBN Search ✓
🇬🇧

British Library Web

British National Library
UK

National library of the United Kingdom. Holds books and documents from around the world, centered on English-language materials.

Title Search ✓ Author Search ✓ ISBN Search ✓
🇩🇪

Deutsche Nationalbibliothek Web

German National Library
Germany

National library covering books published in the German-speaking world. Rich collection of academic and specialized books.

Title Search ✓ Author Search ✓ ISBN Search ✓
🇫🇷

Bibliothèque nationale de France Web

French National Library
France

Covers books published in the French-speaking world. Holds a wide range from medieval manuscripts to modern publications.

Title Search ✓ Author Search ✓ ISBN Search ✓
🇪🇺

Europeana Web

European Digital Cultural Heritage
Europe

Cross-search collections of European museums, libraries, and archives. Search not only books but also paintings and music.

Title Search ✓ Author Search ✓ ISBN Search ✗

Translation Search Paid Plan Only

Easily find translated versions (other language editions) of books you've read. Searches worldwide book databases for different language editions of the same work.

Main Features

  • Automatic Translation Search Automatically search for translated versions based on book titles registered in your reading notes.
  • Support for 30+ Languages Search for editions in English, German, French, Spanish, Italian, Portuguese, Russian, Chinese, Korean, and many other languages from around the world.
  • Grouped by Language Search results are grouped by language, making it easy to find the edition in your target language.
  • Links to Country-Specific Amazon Found translations can be searched directly on that language's Amazon. Example: German edition → amazon.de, French edition → amazon.fr

Use Cases

  • Language Learning Find original or foreign language versions of your favorite books for language study.
  • Comparative Reading Read different language versions of the same work to enjoy translation differences.
  • Gift Selection Convenient for giving books published in a friend's native language as gifts.

Auto-Retrieval is Paid Plan Only

Auto-retrieval from databases marked with Auto and Translation Search are available on Personal Plan and Group Plan.

Link searches to databases marked with Web are available on the Free Plan.

View Plan Details