ISSN Identifier Toolkit
Validate and generate International Standard Serial Numbers (ISSN) for journals, magazines, and newspapers according to ISO 3297 standards.
Validator
Verify ISSN Code
Quick Reference
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8 digits long, often separated by a hyphen.
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The last character can be 'X' (representing 10).
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Uses a weighted sum modulo 11 checksum.
Generator
Create Random ISSNs
What is an ISSN?
An International Standard Serial Number (ISSN) is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine or journal. It is particularly helpful in distinguishing between serials with the same title.
Standard
ISO 3297
Length
8 Digits
Format
XXXX-XXXX
Understanding the ISSN Structure
The ISSN is a simple identification code. Unlike the ISBN, it doesn't contain information about the publisher or the country of origin.
Eight Digits
The ISSN consists of eight digits, used to identify the title of the serial publication.
Hyphen Separation
For readability, the ISSN is usually presented as two groups of four digits separated by a hyphen.
Check Digit
The eighth digit is a check digit calculated based on the previous seven digits to detect errors.
Why Validate ISSNs?
Precise identification is crucial in library systems, indexing services, and the publishing supply chain.
Library Cataloging
Essential for accurate classification and retrieval of serials.
Scientific Indexing
Used by services like Scopus and Web of Science for journal tracking.
Subscription Mgmt
Helps agencies manage millions of journal subscriptions accurately.
Barcode Creation
ISSN is the basis for EAN-13 barcodes on periodical covers.