条码生成器

Valid Characters

Explanation

• ISBN stands for International Standard Book Number.
• ISBN type is based on EAN-13.
• Previously, all ISBN were in EAN-10 format. EAN-13 uses the same encoding but may contain different data in the ISBN number.
• Composed by a GS1 prefix (for ISBN-13), a group identifier, a publisher code, an item number and a check digit.