ISBN code is valid
What this tool does
This tool checks if the code you enter for a book is in the correct format for either an ISBN-10 or an ISBN-13. It simply verifies that the numbers and letters follow the standard rules. It does not check if the book actually exists in a catalog, only that the identifier is valid.
Important: This is a format check only. A valid code does not guarantee the book is real or available for sale.
Common uses
- Verifying book codes before printing labels or packaging.
- Ensuring data in your library system is correctly formatted.
- Checking user-submitted book information for errors.
Input data
| Parameter | Required | Example | Description |
|---|---|---|---|
isbn | Yes | 0306406152 | Enter the ISBN code you want to check, for example '0306406152' or '9780306406157'. This field is required. |
Output data
| Field | Description |
|---|---|
result | Returns yes if the code format is correct, or no if it is incorrect. For example, it returns 'yes' for '0306406152'. |