No, an ISBN does not come with a barcode. An ISBN is a 13-digit number that identifies your book; a barcode is the machine-readable image of that number printed on your back cover. However, most print-on-demand platforms (including Amazon KDP and IngramSpark) generate a barcode automatically during the publishing process, so most self-published authors never need to buy one separately.
What Is the Difference Between an ISBN and a Barcode?
An ISBN (International Standard Book Number) is a 13-digit identifier assigned to a specific edition and format of a book. A barcode is a visual encoding of that number in EAN-13 format; scanners at bookstores, libraries, and warehouses read the barcode to look up the book’s metadata.
The confusion arises because the two are closely linked but sold separately. Bowker, the sole ISBN agency in the United States, sells ISBNs starting at $125 for a single number. Barcodes are an optional add-on at $25 each. Many first-time authors assume the barcode is included in that $125 price; it is not.
That said, buying a barcode from Bowker is rarely necessary. As the following sections explain, the platforms where you actually publish your print book almost always generate one for you at no extra cost.
Do You Need to Buy a Barcode From Bowker?
In most cases, no. Bowker’s barcode service exists primarily for publishers who need a standalone barcode image file before uploading to a printer or distributor. If you are publishing through a print-on-demand platform like KDP or IngramSpark, the platform generates and places the barcode on your cover automatically.
The only scenario where purchasing a barcode from Bowker makes sense is if you are working with an offset printer (a traditional print run) that requires you to supply a print-ready cover file with the barcode already embedded. In that case, you would either buy one from Bowker or generate one yourself using a free tool (see below).
If you are unsure whether you need one, check your printer’s or platform’s submission guidelines before spending the $25. For the vast majority of self-published authors using print-on-demand, the answer is that you do not need to buy a barcode separately.
How Does Amazon KDP Handle Barcodes?
Amazon KDP generates and places a barcode on your back cover automatically during the publishing process. This applies whether you use a free KDP-assigned ISBN or supply your own purchased ISBN.
When you upload your cover PDF, KDP’s system adds the barcode in the lower-right area of the back cover. If you are using KDP’s cover creator tool, the barcode placement is handled entirely within the template. If you are uploading a custom cover PDF, KDP overlays the barcode on the file you submit. This means you should leave a blank white rectangle (approximately 2 inches wide by 1.2 inches tall) in the lower-right corner of your back cover to accommodate it.
One important detail: if you place your own barcode on the cover PDF, KDP may still overwrite it with its own. To avoid duplication or misalignment, KDP’s guidelines recommend leaving the barcode area blank and letting the system handle it. If you have questions about which ISBN to use on KDP versus other platforms, that is a separate decision from the barcode itself.
How Does IngramSpark Handle Barcodes?
IngramSpark also generates a barcode automatically. When you upload your cover file, IngramSpark places an EAN-13 barcode (encoding your ISBN) on the back cover. Like KDP, it expects you to leave a clear area for barcode placement.
IngramSpark’s cover template generator (available on their website) marks the barcode zone on the template so you can design around it. The barcode area is positioned in the lower-right portion of the back cover and should be kept free of artwork, text, or dark background colours that would interfere with scanning.
If you are publishing the same book on both KDP and IngramSpark, each platform generates its own barcode from the ISBN you provide. You do not need to supply a barcode image to either one. The question of whether a revised edition needs a new ISBN is worth understanding separately, since a new ISBN would also mean a new barcode.
Can You Generate a Free ISBN Barcode Yourself?
Yes. If you need a standalone barcode image (for example, for an offset print run or a cover designer who wants to place it manually), several free online tools generate EAN-13 barcodes from an ISBN.
Popular free options include the Creative Indie ISBN Barcode Generator and Bookow’s barcode tool. These tools accept a 13-digit ISBN and output a high-resolution barcode image (typically PNG or EPS) suitable for print. Some also allow you to add a five-digit price extension (called an EAN-5 supplement), which encodes the book’s retail price in the barcode.
The EAN-5 price supplement is optional. It begins with a currency indicator (5 for US dollars, 4 for pounds sterling) followed by the price in cents. For example, a $14.99 book would have the supplement 51499. Many self-published authors skip the price extension because print-on-demand pricing can change; an encoded price that no longer matches the actual price causes confusion at point-of-sale systems, though most modern retailers look up the price from the ISBN rather than relying on the barcode supplement.
Where Does the Barcode Go on Your Book Cover?
The standard placement for a book barcode is the lower-right area of the back cover. This convention exists because bookstore shelving, library processing systems, and warehouse scanners are all designed to look for barcodes in that location.
The barcode area needs a white or very light background to ensure reliable scanning. Most cover templates from KDP and IngramSpark mark this zone clearly. If you are designing a custom cover, reserve a white rectangle of at least 2 inches wide by 1.2 inches tall (50mm × 30mm). Keep the area free of dark colours, gradients, or images that would reduce contrast.
For a professional-looking finished product, integrate the barcode zone into your back cover design from the start rather than treating it as an afterthought. A cleanly placed barcode on a white block that aligns with your layout looks intentional; a barcode awkwardly overlapping artwork looks like an error.
Frequently Asked Questions
Does an ebook need a barcode?
No. Barcodes are only used on physical print books. Ebooks are identified by their ISBN (or ASIN on Amazon) in the retailer’s database. There is no physical surface to print a barcode on, so the concept does not apply to ebooks.
Can I use the same barcode on both my paperback and hardcover?
Only if both formats share the same ISBN, which is not recommended. Standard practice is to assign a separate ISBN to each format (paperback, hardcover, ebook). Each ISBN produces a different barcode. If you use the same ISBN for both paperback and hardcover, supply chains cannot distinguish between the two formats.
What is the five-digit number next to some book barcodes?
That is the EAN-5 price supplement. It encodes the book’s suggested retail price: the first digit indicates the currency (5 for US dollars), and the remaining four digits are the price in cents. For example, 51499 means $14.99 USD. This supplement is optional and increasingly ignored by modern point-of-sale systems.
Will KDP reject my cover if I include my own barcode?
KDP will not reject the file, but it may place its own barcode over yours. This can result in two overlapping barcodes or misalignment. KDP’s guidelines recommend leaving the barcode area blank and allowing the system to generate it.
Do I need a barcode if I only sell through Amazon?
You do not need to provide one. KDP generates the barcode automatically. If you are using a free KDP-assigned ISBN, the barcode is handled entirely by Amazon. If you supply your own purchased ISBN, KDP still generates the barcode from that number.
