Barcode Basics
What Is an ISBN Barcode and How Do You Create One for a Book?
- ISBN
- book barcode
- EAN-13
- self-publishing
- price add-on
An ISBN barcode is the EAN-13 symbol on a book's back cover that carries its 13-digit International Standard Book Number. The ISBN identifies the edition and format; the printed bars make that number readable by a scanner. Getting an ISBN and preparing print-ready barcode artwork are separate steps.
Table of Contents
- What Is an ISBN Barcode?
- How an ISBN Becomes a Barcode
- What Is the Price Add-On?
- How to Get an ISBN
- How to Create an ISBN Barcode, Step by Step
- ISBN Barcode Size and Placement
- Common ISBN Barcode Mistakes
- Frequently Asked Questions
- Final Thoughts
What Is an ISBN Barcode?
Book ISBN-13 numbers begin with 978 or 979. The barcode's main EAN-13 symbol carries that same number without hyphens. A separate five-digit price add-on may appear immediately to its right. BISG's book-industry guidelines explain how the main code, readable ISBN line, and optional price extension are used by publishers and retailers.
How an ISBN Becomes a Barcode
A modern ISBN-13 consists of the 978/979 prefix, a registration group, a registrant, a publication element, and a final check digit. The check digit is calculated from the first 12 digits; it detects many data-entry and scanning errors but does not prove that the ISBN belongs to your book.
| Part | Example from 978-0-306-40615-7 | Purpose |
|---|---|---|
| Prefix | 978 | Book numbering range (978 or 979). |
| Registration group | 0 | Language or geographic group. |
| Registrant | 306 | Publisher or imprint assignment. |
| Publication | 40615 | Specific title, edition, and format. |
| Check digit | 7 | Calculated verification digit. |
Older ISBN-10s must be converted before barcoding: for example, 0-306-40615-2 becomes 978-0-306-40615-7 after the old check digit is replaced and the EAN-13 check digit recalculated. A 979 ISBN has no ISBN-10 equivalent. Use the assigned ISBN-13 from your agency record, rather than guessing or generating a new number.
What Is the Price Add-On?
The smaller EAN-5 symbol to the right of a book barcode can encode a suggested cover price. For US dollar prices below $100, a leading 5 is followed by four price digits: 52495 means $24.95. 90000 means that no price is encoded. BISG says publishers should consult trading partners before omitting a price extension because some require it.
| Add-on | Meaning |
|---|---|
| 52495 | US$24.95 suggested price |
| 51999 | US$19.99 suggested price |
| 90000 | No cover price encoded |
The New Age Apps ISBN option produces the main EAN-13 symbol; it does not currently add EAN-5. If your distributor expects an add-on, have your cover designer or a book-barcode supplier create and verify the complete symbol rather than placing an unrelated five-digit graphic beside it.
How to Get an ISBN
Contact the national ISBN agency directory for the country where your publishing business is based. Cost and application steps vary by country. Each paperback, hardcover, revised edition, and separately distributed e-book format needs its own ISBN; a simple reprint of the same edition does not usually need a new one.
Some publishing platforms offer an ISBN under their own imprint or distribution terms. If you use a platform-provided number, read its terms before planning bookstore, library, or other-platform distribution. If you use Amazon KDP for a print book, KDP can place its barcode on a cover that does not already include one.
How to Create an ISBN Barcode, Step by Step
- Obtain the ISBN-13 assigned to this exact print format and confirm it begins with 978 or 979.
- Ask your printer or distributor whether a five-digit price add-on is required and, if so, which code they expect.
- Open the Barcode Generator, select ISBN, and enter all 13 digits without hyphens. Its EAN-13 renderer checks the symbol length and check digit, but does not verify agency ownership or book metadata.
- Compare the digits below the preview against the assigned ISBN. Add the readable
ISBN 978-...line in cover artwork if it is not present. - Download the PNG at a sufficiently high resolution for its final physical size. The app's PDF export contains a raster PNG; it is not vector artwork. For a professional offset print run, ask the cover designer or printer for a compliant vector master if required.
- If an EAN-5 is needed, have it added as part of a verified book-barcode layout. Place the complete symbol on a solid white area of the back cover.
- Print a proof at final size and scan it before approving the run.
For several books, the Bulk Barcode Generator can preview one ISBN value per line. Bulk downloads require sign-in and are subject to plan limits. For a KDP print book, letting KDP place its own barcode may be simpler.
ISBN Barcode Size and Placement
Keep the main symbol, optional add-on, human-readable line, and quiet zones clear. BISG describes 80% to 200% magnification for book barcodes. KDP's current cover guidance recommends a 2 × 1.2 inch barcode area, specifies a minimum of 1.4 × 0.8 inches for a supplied barcode, and requires a white background and spacing from spine and trim. Use your printer's exact cover template, not a size copied from a web preview. Keep the barcode away from the spine or any fold, and do not crop the bars to make it fit.
Common ISBN Barcode Mistakes
- Using the paperback ISBN on the hardcover or revised edition.
- Encoding an ISBN that differs from the agency or KDP listing.
- Assuming a valid check digit proves the ISBN is registered to your title.
- Forgetting a required EAN-5 price extension, or encoding a price that will change.
- Putting a low-resolution PNG, colored bars, or artwork inside the quiet zones.
- Using the old 10-digit number directly rather than the assigned ISBN-13.
- Assuming an e-book needs a printed barcode; e-books have no physical checkout symbol.
Frequently Asked Questions
Does buying an ISBN give me a barcode?
An ISBN is an identifier, not automatically a barcode image. Some agencies or publishing platforms offer a symbol, and KDP can place one on a print cover. Otherwise, create artwork that encodes the exact assigned ISBN-13.
Is an ISBN barcode the same as EAN-13?
The main book symbol is EAN-13 carrying an ISBN-13 that starts with 978 or 979. A book cover may also carry a separate five-digit price add-on and a readable ISBN line above the bars.
Can I make an ISBN barcode for free?
If you already have an assigned ISBN, you can use a generator to make a barcode preview. ISBN issuance may be free or paid depending on your national agency or publishing platform. Check the printing and distribution requirements before using the image on a commercial cover.
What does 90000 mean on a book barcode?
It is a five-digit add-on meaning no cover price is encoded. BISG recommends it when the US dollar price is absent from the barcode. Ask your distributor whether a price add-on is required at all.
Do e-books need an ISBN barcode?
An e-book does not need a printed barcode. ISBN requirements depend on the store and distribution route; when an e-book format has an ISBN, it needs one distinct from the print editions.
Where should the barcode go on a book cover?
Usually on the lower-right area of the back cover, away from the spine and trim, on a solid light background. Follow the requirements of your printer or platform and scan a physical proof.
Can I use the same ISBN for the paperback and hardcover?
No. The International ISBN Agency assigns separate ISBNs to distinct formats and editions, so paperback and hardcover versions need different identifiers.
What's the difference between ISBN-10 and ISBN-13?
ISBN-10 is the older 10-digit form. Modern book barcodes use ISBN-13. To convert a 978 ISBN-10, remove its old check digit, prefix 978, and calculate a new 13-digit check digit; 979 ISBNs have no ISBN-10 equivalent.
Final Thoughts
Start with the ISBN assigned to the exact edition and format, decide whether your trading partners need a price add-on, then create and test the complete cover symbol. The ISBN generator is useful for previewing the main EAN-13; a printer or cover designer should verify final artwork and any add-on. For another specialized packaging symbol, read our ITF-14 case barcode guide.
Sources and Specifications
See the BISG book barcoding guidelines, the International ISBN Agency directory, and KDP's cover barcode requirements.
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