ISBN Barcode Generator
Generate EAN-13 ISBN barcodes with checksum validation
100% free. Runs entirely in your browser - your files and data never leave your device and nothing is uploaded to any server.
ISBN Input
Style
Preview
Enter a valid ISBN to generate
About ISBN
- ISBN-13 starts with 978 or 979 (EAN-13 format)
- ISBN-10 is the older 10-digit format (auto-converted)
- The final digit is a checksum to verify the number
- EAN-13 barcodes are used in bookstores worldwide
About this tool
ISBN barcodes (EAN-13 format) are the standardized barcodes found on the back of published books, used by bookstores and libraries for inventory and checkout. This tool generates a correctly formatted EAN-13 ISBN barcode with checksum validation, useful for self-published authors or anyone needing an accurate ISBN barcode image.
How to use this tool
- Enter valid ISBNProvide correctly assigned ISBN value for your publication.
- Validate checksumConfirm number integrity before barcode rendering.
- Generate EAN-13 barcodeCreate bookstore-compatible ISBN barcode image.
- Test scan outputVerify with retail/scanner app before printing books.
ISBN barcodes for self-published books
Every edition of a book - paperback, hardback, ebook - needs its own ISBN, bought from your country’s ISBN agency (Bowker in the US, Nielsen in the UK). Enter the 13-digit ISBN to generate the EAN-13 barcode; the last digit is a check digit that is validated automatically.
Place the barcode on the back cover, usually bottom right, at around 37 x 26 mm, black on white. Many printers also add a 5-digit price add-on next to it.
Key features
- Creates standards-aligned ISBN barcode output quickly.
- Checksum validation reduces print-time errors.
- Useful for self-publishing and small presses.
- Supports clean prep for distribution workflows.
Common uses
- Preparing back-cover barcode for new title.
- Validating ISBN formatting before print submission.
- Generating replacement barcode assets for revised editions.
- Testing scan reliability in publishing QA.
Tips for better results
- Use only officially assigned ISBN numbers.
- Print test strip before large production runs.
- Keep sufficient quiet zone margins around barcode.
- Verify final DPI for print vendor requirements.
Mistakes to avoid
- Trying to generate barcode from unregistered ISBN.
- Ignoring checksum failures and printing anyway.
- Resizing barcode disproportionately and hurting scan reliability.
- Using low-resolution assets in final print layout.
Frequently asked questions
The final digit of an EAN-13 barcode is a checksum calculated from the preceding digits, used by scanners to detect errors - an incorrect checksum means the barcode won't scan correctly, so validating it is essential for a functional barcode.
Yes - this tool generates the barcode IMAGE from a valid ISBN number; it doesn't assign or register new ISBNs, which must be obtained through the official ISBN registration agency for your country/publisher.
A correctly generated EAN-13 barcode from a valid, properly formatted ISBN should scan the same as any standard published book barcode in commercial systems.
From your country's ISBN agency - Bowker in the US, Nielsen in the UK, and the German ISBN agency in Germany, for example. Self-publishing platforms may also provide a free ISBN tied to their imprint.
Printers commonly ask for about 37 x 26 mm at 100% size, and not much smaller than 80%. Leave a white quiet zone around it so scanners can read the edges.
A small five-digit EAN-5 code that encodes the retail price, used mainly in the US and Canada. It starts with a currency digit, such as 5 for US dollars.