Free tool
Repetition & self-plagiarism checker.
Check your text for repeated or near-identical sentences within itself. A client-side heuristic for internal duplication, not a web comparison.
← All toolsCheck your text for repeated or near-identical sentences within itself — a self-plagiarism and internal-duplication check. Everything runs locally in your browser.
About this tool
How to use the repetition & self-plagiarism checker.
What it does. Checks your text for repeated or near-identical sentences within itself.
How to use it. Paste your text to find internal duplication. Review the flagged repeats and vary or remove them.
Why it matters. Accidental repetition reads as careless. Catching it within a single document is a fast, private quality check.