Plagiarism Detector
Sentence-level originality check

Find every copied line. Fix it in one click.

Upload up to 5 long documents together. Each sentence is compared with the web, your own library and the other files — copied ones are marked and rewritten with the same meaning.

  • 5files per run
  • 10k+words per file
  • 4download formats
  1. 1Add
  2. 2Scan
  3. 3Rewrite
  4. 4Export
    Create a free account or log in to scan. Free plan: 5,000 words a month.
    Why it's different

    A checker that doesn't stop at a percentage

    Line-by-line evidence

    Every sentence gets its own score and source, so you see exactly what was copied and from where.

    Meaning-safe rewrites

    Flagged lines are reworded while facts, numbers, names and citations stay exactly as they were.

    Batch of 5, 10k+ words each

    Theses, reports and e-books are processed in the background with live progress for each file.

    Three-way comparison

    Web sources, your private library and the files in the same batch are all checked together.

    You stay in control

    Accept a rewrite, edit it yourself, regenerate it, or keep the original — sentence by sentence.

    Ready-to-submit files

    Rewritten DOCX and TXT, a marked-up copy and a full report — or everything in one ZIP.

    How it works

    From draft to original in four steps

    1. 01

      Add your files

      Up to 5 documents, or paste text.

    2. 02

      Scan every sentence

      Matches are marked as copied or similar.

    3. 03

      Review rewrites

      Accept, edit or keep each flagged line.

    4. 04

      Export

      Download clean files and the report.

    FAQ

    Common questions

    Will the rewrite change what I meant?

    No. Rewrites keep every fact, number, name and citation and only change wording and sentence structure. You can review, edit or reject each one.

    How long can my documents be?

    Each file can have 10,000+ words (up to 50,000, depending on your plan), and up to 5 files can be checked in one run.

    Which formats are supported?

    DOCX, PDF with selectable text, TXT, ODT, RTF, Markdown and HTML.

    Do you keep my documents?

    No. Uploaded files are processed and deleted automatically after 24 hours.

    What do the colours mean?

    Coral lines match a source almost word for word, amber lines share a large part of their wording, and green lines have been rewritten.