Free tool · runs in your browser
Compare Two PDFs
Diff two PDFs line by line and see what text was added, removed, or unchanged. Free, private, and runs entirely in your browser.
No signup · nothing uploaded · No page limit — analysis tools are free for any file size
How it works
Drop in two PDFs
The older version first, then the newer one — or pick them together.
Run the comparison
Text is extracted per page and diffed line by line.
Review the diff
Green lines were added, red removed; the summary counts every change.
Upload two versions of a document — an old and a new contract, spec, or report — and get a line-by-line diff of the text. Added lines are marked in green, removed lines in red, and a summary tells you exactly how many lines changed.
This compares the text layer, not the visual layout: moved paragraphs, reformatting, and image changes will not show up, and scanned documents have nothing to compare until they are OCRed. For revision work on drawings and plans, the PDFDepth app lets you view both versions side by side in split view. Both files stay on your device the whole time.
Questions, answered
No. It compares extracted text line by line. Formatting changes, moved blocks, and image differences are not detected.
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