Small jobs, no account. Every tool runs the same engine against Crossref, OpenAlex, PubMed and arXiv.
Citation Checker
Paste a reference list and check every citation against the scholarly record. Finds fabricated, mismatched and retracted references in seconds. Free, no account needed.
Reference Checker
Check a reference list before you submit. Each entry is matched to Crossref, OpenAlex, PubMed and arXiv, and labelled Verified, Partial match, Suspicious or Not found with the reason.
AI Citation Checker
Verify references generated by ChatGPT, Claude, Gemini or any AI writing tool. Catches invented DOIs, real authors attached to papers they never wrote, and real journals with fabricated articles.
ChatGPT Citation Checker
ChatGPT invents plausible references: real journals, real authors, fake articles. Paste what it gave you and see which entries exist, which are stitched together, and what to cite instead.
Fake Citation Checker
Detect fabricated citations in any reference list. Each entry is resolved by DOI, then compared field by field against the database record, so a fake DOI or a borrowed author list cannot pass.
APA Citation Checker
Check an APA 7 reference list for existence and accuracy. Verified entries can be copied back in clean APA 7 form, built from the database record rather than from what you pasted.
MLA Citation Checker
Check MLA 9 works-cited entries against the scholarly record and export corrected entries.
Chicago Citation Checker
Check Chicago author-date references for existence and accuracy, then export clean entries.
Harvard Reference Checker
Check Harvard-style references against Crossref, OpenAlex, PubMed and arXiv, and export corrected entries.
Source Finder
Paste a claim or a paragraph and get real, peer-reviewed papers ranked by how well they support it, each with a resolved DOI and a ready-to-cite reference.
Citation Finder
Find a citation for a sentence. Paste the claim, pick the paper that supports it, and copy the reference in APA, MLA, Chicago, Harvard or IEEE.