Compare PDFs

See exactly what changed between two versions of a document: added and removed lines, words and metadata.

How it works

  • Text of both PDFs is extracted and compared line by line, then word by word inside changed lines, so you see the exact edits.
  • The summary shows page counts, word counts and how many lines were added, removed or unchanged.
  • Metadata only mode just compares title, author, page count and creation dates — useful for a quick sanity check.
  • Comparison is text-based: images, layout shifts and formatting changes are not detected unless they also change the text.