review
Compare the Text of Two PDFs
See exactly which words changed between two versions of a document.
Runs in your browser
How it works
Where comparing appearance tells you which pages differ, this tells you which words. Each page's text is compared word by word and the additions and removals are listed. It uses a proper longest-common-subsequence difference rather than comparing word sets, so a reordered paragraph is reported as moved text rather than as no change at all.
Related tools
Questions
- How is this different from Compare Two PDFs?
- That compares how pages look and finds where to look. This compares the words and tells you what changed.
- Will it work on scans?
- No. There is no text to compare until OCR has been run.
- What if the documents are different lengths?
- Only the overlapping pages are compared, matched by position.