DOI Validator
Checks whether a DOI is correctly formatted and shows its normalized form — entirely local, no network request. This checks SYNTAX only: it does not confirm the DOI actually exists or resolves to a real article (for that, use DOI Lookup).
About this tool
- Purpose
- Checks whether a DOI is correctly formatted, and returns its normalized form.
- Try this
- Paste a DOI such as 10.1038/nphys1170, with or without the https://doi.org/ prefix.
- Expected result
- A clear valid/invalid result, plus the DOI in its normalized form when valid.
- Privacy
- Runs entirely in your browser — nothing you enter is sent to a JCF server.
- Limitations
- Checks format and checksum rules only — it does not confirm the DOI actually resolves to a real, existing article.