Similarity percentage
See the overall proportion of matched content alongside your document's total word count.
Plagiarism Checker
Review similarity in your draft, see the sources behind each match, and decide what to revise before you submit.
Your plagiarism report
See the context behind every similarity signal
A score is only a starting point. Revisy.ai keeps the document, matching passages, and source details together so you can review what needs attention.
Matching sources
Review the number of sources, matched words, matching passages, and source similarity.
Direct and similar matches
Use match categories to distinguish exact language from related similarity.
Matched passages and sources
Move from a highlighted passage to its source
Select a match to compare the wording in your paper with the relevant source information. The report shows matched words, passages, and the similarity connected to that source.
A report view keeps document context on the left and matching source details on the right.
Report access
Pay for the report that matches your document
You can add text or upload a PDF or DOCX file up to 10 MB. Sign in to run a check. Full plagiarism reports are available as a one-time purchase priced by your document's word count—no membership is required.
- Paste text or upload a PDF or DOCX file
- Sign in before starting a check
- Review report access and document-based pricing before payment
Built for academic writing
A plagiarism checker for the work students actually submit
Use it before turning in an essay, research paper, literature review, thesis chapter, or other academic draft.
Essays
Check quotations, paraphrases, and cited material before a deadline.
Research papers
Review long-form arguments against sources while preserving the surrounding context.
Academic drafts
Use the report to guide revision—not to replace careful citation and editing.
Choosing a plagiarism checker
Look beyond a single percentage
Source transparency
A useful report identifies the sources behind a match.
Passage-level context
You should be able to see where a match appears in your document.
Clear match types
Exact matches and similarity signals should be easy to tell apart.
Practical access
Pricing and access rules should be clear before you pay.
How it works
From upload to review in three steps
- 01
Add your draft
Choose the text or file tab and add the version you want to review.
- 02
Run the check
Revisy.ai prepares the main similarity report first, then finishes the document preview and positions.
- 03
Inspect the evidence
Select a passage or source to move between the report and the original context.
Plagiarism checker FAQ
Questions before you check your paper
Student guide
Use a plagiarism report as part of your revision process
Review the passage
Read the highlighted text with the sentences around it, rather than relying on a percentage alone.
Check the source
Confirm whether the wording is quoted, cited, or sufficiently paraphrased for your assignment.
Revise with care
Use your course requirements and citation style guide when deciding what to change.
Ready to review your paper?
Paste your draft or upload a PDF or DOCX file to start a plagiarism check.
Check your paper