How the plagiarism check works
We pick the most distinctive sentences in your text and search for them across the web and our index of open sources. Pages that match are fetched and compared word by word, so every highlight points to the exact passage it matches.
Your similarity score is the share of your words that match a source. When two sources cover the same passage, it is counted once, credited to the source with the larger match.
Citation status, not just matches
Each match is tagged as quoted and cited, cited but not quoted, quoted but not cited, or neither. The last group is the one to fix first.
Integrity checks
We also flag look-alike characters (such as Cyrillic letters posing as Latin ones) and invisible characters. These tricks hide text from detectors, and reviewers treat them as red flags.