ISBN to barcode
Validate an ISBN-10 or ISBN-13 and draw its bookland EAN-13 barcode, on your device.
ISBN to barcode checks the check digit of an ISBN-10 or an ISBN-13. It converts the number to the matching bookland EAN-13 under the 978 or 979 prefix and draws that code. A wrong check digit or prefix is refused rather than drawn wrong. No dash grouping prints, since the hyphen spots come from a GS1 table this tool skips.
Questions
What ISBN formats can I give it?
An ISBN-10, 9 digits plus a final check character that can be X, or an ISBN-13, 13 digits. Either one has its own check digit verified before anything is drawn.
What happens if my check digit is wrong?
It refuses rather than drawing a barcode that scans to the wrong number, naming the digit it expected instead of the one you gave. An ISBN-13 also has to start with the bookland prefix 978 or 979, and one that does not is refused by name too.
Why does it not show the hyphens in my ISBN?
Where the registration group and registrant hyphens fall inside an ISBN depends on GS1s official range table, which this tool does not carry. Printing a guessed grouping would look authoritative while being wrong for most publishers, so the digits print without any dash grouping at all.
What barcode does it draw?
The bookland EAN-13 the ISBN maps to. An ISBN-10 is converted by dropping its own check digit, prefixing 978, and computing a fresh EAN-13 check digit over those 12 data digits; an ISBN-13 already in bookland form is drawn as is once its own check digit is confirmed correct.
Can I get SVG output instead of PNG?
Yes, format chooses png or svg, png by default, the same as Generate barcode. The PNG is always rendered on an opaque white background, since a transparent one fails a real scanner.
Does it work on the command line?
Yes. It takes no file input and has no browser-only restriction, so the CLI and MCP surfaces run the same check-and-draw code as the page.
Compare
| Tool | Runs on the CLI | Live as you type |
|---|---|---|
| ISBN to barcode | Yes | No |
| Generate QR / barcode | Yes | No |
| Generate barcode | Yes | No |
| vCard builder | Yes | No |