Spot references that do not exist
Each reference is looked up by DOI, title and authors. What cannot be found is flagged for you to check.
Check every reference before someone else does
AI writes references that look perfect and do not exist. Paste your list or upload your paper, and each one is checked against scholarly records.
- Checked against real records
- Paste a list or upload a file
- Export corrected references
49,000+research reports completed
9,700+documents peer reviewed
3,500+documents improved or reviewed
950+university email domains
Know which references you can stand behind
Fix the details
See wrong years, authors and DOIs against the record, and get a clean list in your citation style.
Check claims against sources
Claim checks flag statements that are unsupported, overstated or contradicted by the sources they cite.
How it works
- 1
Paste or upload
Paste your references, or upload your paper with them inside it.
- 2
Each one gets checked
References are matched to scholarly records, usually within about a minute.
- 3
Fix and export
See what passed and what needs attention, then export in Word, BibTeX or Excel.
A clear verdict for each reference
The report shows how many references were supplied, verified and left unverified, with the matched record next to each one.
- Works on references written by you or by an AI tool
- APA and other citation styles
- A table you can download and share
A citation reviewer for your whole paper
The AI peer review includes a citation integrity reviewer that reads your in-text citations and reference list together.
- Citations with no matching reference
- Vague attributions such as 'a study found'
- Missing DOIs and reference details
Built for the way you work
If you used AI to draft
Find the references it may have invented before they reach a marker or an editor.
If you are about to submit
Clean up details and missing DOIs as a last step.
If you supervise or edit
Check a reference list quickly when something looks wrong.
Questions
How does it check a reference?
It looks each reference up in scholarly records by DOI, title and authors, then compares the details. References it cannot match are marked as not found.
Does 'not found' mean a reference is fake?
Not always. Books, reports and very new or local papers may not be in the records, so treat it as a prompt to check the source yourself.
Can it check whether a source supports my claim?
Document Improvement has a claim check that labels statements as unsupported, weakly supported, overstated, unverifiable, misrepresented or contradicted, based on your document and its sources.
Which formats can I export?
Word, PDF, Excel and BibTeX for the check. The Citation Generator also exports RIS.