Upload PDF or Word
PDF, Word (.docx), text or Markdown. The title block, keywords, reference list and declarations are skipped automatically.
Originality checker for research papers and theses
Upload your paper or chapter and get a similarity report in a few minutes: an overall similarity index, the matching sources ranked by how much of your text they cover, and every match highlighted and numbered in your text.
Similarity index and breakdown
See how much of your text matches internet sources and publications, with each source's share.
Every match highlighted
Matches are coloured and numbered by source, so you can step through them and fix each one.
Filters
Exclude a source (for example your own earlier paper) or ignore short matches. Quotes and citations are never counted.
PDF report
Download a report with a digital receipt, the summary of sources and your highlighted text.
Cited or not
VIRAT flags matching sources your reference list doesn't cite.
How it works
- 1Sign in with your free Science Catalogs account.
- 2Upload your paper or paste your text.
- 3Read the report, fix the highlighted passages and check again.
Questions
What does VIRAT compare my text with?
Over 30 million papers in the Science Catalogs research library, open-access full texts, and public web pages found by exact-phrase search.
Does it replace my university's checker?
No. VIRAT cannot see student papers or paywalled articles. Use it to find and fix problems early, then run your university's own checker before you submit.
How much does it cost?
Checks use credits, charged per 1,000 words checked. Every account gets welcome credits and free credits each month. If a check fails, the credits come back.
Is my document stored?
Your report is saved in your account so you can open it again, and you can delete it at any time. Your document is not added to any database that other people's checks are compared with.
Try Originality checker with VIRAT
One free Science Catalogs account for VIRAT, Scholars Post and SciNexID. Every account starts with 50 welcome credits and gets 20 free credits every month.