For researchers
Screen a manuscript before you submit it to a journal
Paste the abstract and introduction, a methods section or the reference list, up to 2,000 words. The report lists overlapping passages with their sources, the status of every reference with a DOI, paragraphs with indicators of machine-generated text, and a neutral AI-use disclosure template for the Methods or Acknowledgements section.
What you can check
- Journal articles and preprints
- Conference papers
- Abstracts and extended abstracts
- Grant proposals
- Book chapters
- Reference lists on their own
What you get
Passages that match Crossref and OpenAlex records, open-access full texts or web pages are highlighted with the record behind them. Self-citations and recognised quotations are marked separately from borrowing.
Entries with a DOI are matched against Crossref: found, not found, DOI resolving to another work, or registered with another agency. Retraction notices carried by Crossref are shown with a link.
Paragraphs with indicators of machine-generated text are listed with their score. The report also includes a disclosure template in the form recommended by the ICMJE and most publishers, to adapt if a tool was used.
How to read the report
Overlap in methods and standard definitions is expected
Methods sections, established definitions and correctly cited passages overlap with the literature by nature. Review each match against the source; a journal’s similarity report will show the same passages.
Reference statuses
"Not found" is a prompt to verify the entry by hand, not a statement that the work is fabricated. "DOI resolves to another work" usually means a copied DOI; "registered outside Crossref" covers DataCite and other agencies, where the title is not compared.
AI indicators and journal policies
Journals ask authors to disclose AI-assisted writing, not to pass a detector. Indicators point to passages worth revising; text by non-native writers and formulaic prose receive more false signals, which is stated in the methodology.
What to do before submission
- Resolve each overlap. Quote and cite, paraphrase with a citation, or leave standard wording as it is with the source cited. Keep the report link; some editors accept it as a record of a pre-submission check.
- Correct the reference list. Fix DOIs that resolve to another work, replace entries that cannot be found, and look at any retracted work you cite to decide whether the citation still stands.
- Prepare the AI-use statement. If an AI tool was used for language, translation or literature summaries, adapt the disclosure draft for the Methods or Acknowledgements section as the target journal requires. If none was used, most journals ask that no statement be included.
- Check the journal’s requirements. Many journals, including those indexed in major citation databases, publish their own policies on similarity thresholds and AI use. The report gives you the passages and the statuses; the policy decides what the journal expects.
The free beta checks fragments of up to 2,000 words a day from one browser. For a whole manuscript, check it by section or request a full check; editorial offices can request a pilot on the page for journals. Method and limitations: methodology. The text is kept for 30 days and is never added to a comparison database: privacy notice.