An ISBN is a unique identifier that helps your book be recognized, tracked, and distributed across retailers, libraries, and publishing platforms. Adding an ISBN to your book ensures it can be properly cataloged and discovered by readers worldwide, while also linking different formats of the same title under a single reference.

In the editor, navigate to your back cover page and at the top right click on "Add ISBN barcode."

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCSmQvaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--6808e65b307f5c413cf17b6278e5978328811ea9/Screenshot%202026-06-11%20at%203.51.02%E2%80%AFPM.png?cw_image_width=1008px)

The ISBN Barcode modal will open where you can add the code in the provided field.

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCTDUvaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--d382c4833c9e24fe5369a802b6bd1628f9f0ba86/Screenshot%202026-06-11%20at%203.51.53%E2%80%AFPM.png)

When a valid code is entered a preview of the barcode will be displayed at the top.

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCQUtBaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--498431b08e716c003c42f0bfbf4de64d8dc7993a/Screenshot%202026-06-11%20at%203.52.15%E2%80%AFPM.png)

If an invalid code is entered the preview will not be displayed and error message will be displayed.

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCSUtCaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--b1a695042933b97188504e25c54db4c4a5ab6370/Screenshot-202026-06-11-20at-203.53.08-E2-80-AFPM.png)

Click on "Add barcode."

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCRW1BaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--abcab71a8dfb77893ada7df8a75cb03c72fa1783/Screenshot%202026-06-11%20at%203.52.46%E2%80%AFPM.png)

The ISBN code will be added to the bottom right of the back cover.

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCT3FBaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--4072187313d67a2b206b6928fd020a1bca0f6006/Screenshot%202026-06-11%20at%203.53.45%E2%80%AFPM.png)

Click the barcode to drag and reposition it on the back cover as needed. Use the resize handle in the bottom-right corner of the barcode to adjust its size. To remove the barcode, select it and press the "Delete" key on your keyboard.

![](https://app.chatwoot.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBCTWFCaXdVPSIsImV4cCI6bnVsbCwicHVyIjoiYmxvYl9pZCJ9fQ==--5906e582122d89e27a25516855a63234498ccc39/Screenshot%202026-06-11%20at%203.54.03%E2%80%AFPM.png)