Plagiarism-style Text Comparison
Compare a text with a source and highlight the passages that were copied.
—Text to check that matches the source
—Matching passages
—Longest match
Text to check
Source
● Everything runs in your browser. Your text is never sent to a server.
How it works
The comparison finds every sequence of at least N consecutive words that appears in both texts (with a hash index, so it's fast even for long texts), merges overlapping matches and highlights them in both texts with matching colors. The percentage shows how much of the text to check is covered by copied passages. This compares two texts you provide — it doesn't search the internet, so nothing you paste is published or stored anywhere.