Validate DOI

Check a DOI identifier or doi.org URL for the standard prefix and suffix shape.

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ToolDOI Validator
Input
Output
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How it works

Common URL and doi: prefixes are removed, then the value must contain a 10. registrant prefix, slash, and non-whitespace suffix. Prefix and suffix are returned separately without contacting a resolver.

  • Prefix stripping accepts common citation forms.
  • No network lookup keeps the result deterministic.

Worked example

Valid DOI
Validate a standard DOI identifier
Input
											10.1038/nature12373
Output
												Valid DOI: 10.1038/nature12373
Prefix: 10.1038
Suffix: nature12373

When to use this

Bibliographies, Crossref exports, and research repositories validate DOI strings.

Edge cases

  • A doi.org URL is normalized before checking.
  • A value without the slash fails even when it starts with 10.
  • A syntactically valid identifier may still be unregistered.

References