skill-barcode-isbn

To validate ISBN-10 and ISBN-13 values, you normalize the input, verify the check-digit, and convert valid entries to ISBN-13. This process rejects invalid values and ensures only properly normalized identifiers are stored in your catalog.

You can generate EAN-13 and Code-128 barcodes in pure PHP using the built-in GD image extension. EAN-13 handles numeric ISBN data, while Code-128 supports alphanumeric data for custom barcode generation without requiring external libraries.

Yes, you can create QR codes for book labels and member cards using a bundled PHP QR code library. The workflow also fetches book metadata from Open Library to enrich your catalog entries alongside your valid ISBN data.

Yes, the skill supports bulk ISBN validation for batch imports and includes features for printing spine labels. This allows you to process large volumes of book identifiers and generate physical labels efficiently for library catalogs.

You need the PHP GD extension enabled to generate EAN-13 and Code-128 barcodes. QR code generation relies on a bundled PHP QR code library, requiring no additional external extensions or dependencies for ISBN validation.