DOI Checker

Paste a DOI, article URL or reference containing one to check publication records and reference details. Enter a title to find candidate DOIs and citation suggestions. Review the evidence and coverage limits before using a result.

How to check a DOI

Paste one DOI, doi.org link, or full reference containing a DOI. Include the title, authors and year if you want those details compared with the publication record. An article URL can also be checked when its page is readable and matching publication evidence is available.

Review the returned record, differences and evidence links before using the reference. A DOI alone can identify a record, but it cannot show whether an omitted title or author was correct. For a whole reference list, use the Bibliography Checker.

Find a DOI by title

Use the DOI finder by title when you know a paper's title but not its identifier. A DOI search by title returns candidate records from Crossref and PubMed; similarity is not a verification verdict. Text without a DOI or article URL follows this candidate-search route, including a reference pasted without an identifier.

Compare the title, authors, year and publication type before choosing a DOI. A book and one of its chapters can have different DOIs. For example, searching How to Read a Folktale: The 'Ibonia' Epic from Madagascar returned the 2013 book with DOI 10.11647/obp.0034 alongside other records. Choose the record for the work you actually used. Citation suggestions still need review against your required style.

Need to search by author or recover other missing reference details? Try Citation Finder.

What a DOI check can tell you

Publication match
A publication record was found and the supplied details were consistent with the evidence checked. Review which fields and providers were covered.
Conflicting metadata
A real record was found, but a supplied detail differs. Check the differences before changing your reference or accepting the DOI.
No match or incomplete check
A completed search without a match is different from a provider failure or unreadable page. Neither proves fabrication. Check the input, consult the publisher, or retry an incomplete check.

A record match does not establish publication quality, peer review or support for a claim. Available retraction evidence also has coverage limits; no notice found is not a guarantee.

DOI check examples

These public records illustrate the difference between a matching reference and a real DOI attached to conflicting details. The records and tool results were checked on September 27, 2026; provider records and availability can change.

A reference that matches the publication record

Input

Campos, O. (1969). O estudo da demanda e das necessidades e sua importância para o planejamento de saúde. Revista de Saúde Pública, 3(1), 79-81. https://doi.org/10.1590/S0034-89101969000100010

Observed result

Verified publication match. The returned record agreed with the supplied title, author, year, journal, volume, issue, pages and DOI. This establishes a record match for this example, not the reliability of the article's claims.

Review the publisher record and Crossref record.

A real DOI with the wrong year

This example deliberately changes the book's publication year from 2013 to 2018. The error is constructed for this demonstration.

Input

Haring, L. (2018). How to Read a Folktale: The 'Ibonia' Epic from Madagascar. https://doi.org/10.11647/OBP.0034

Observed result

Conflicting metadata. The DOI identified Lee Haring's book, but the supplied year was 2018 and the publication record showed 2013. A real DOI did not make the conflicting reference correct.

Compare the publisher record and Crossref record before correcting the year.

DOI questions, answered

What is a DOI?

A DOI, or Digital Object Identifier, is a persistent identifier for an object such as an article, book or dataset. A doi.org link resolves it to a location maintained by its registrant. Not every genuine publication has a DOI.

Is a DOI verifier the same as a DOI resolver?

A resolver follows a DOI to its registered destination. This DOI checker looks for publication records and compares the reference details you supply. A working link alone does not show that your title, author or year is correct.

Can I check a reference without a DOI?

An article URL can be checked when its page is readable and matching publication evidence is available. Text without a DOI or article URL is searched as a title for candidates; it is not treated as a full-reference verification. Compare each candidate with your original source.

Does a valid DOI mean a source is credible?

No. A DOI record does not establish research quality, peer review or support for your argument. Read the source and assess its methods, context and relevant limitations separately.

Is this DOI checker free?

An account with available credits is required. Sign in to use your remaining credits, or choose a plan. Paid plans start at $9/month.