All KukPDF tools

Compare two PDFs

Add two PDFs and KukPDF extracts the text of each page in your browser, compares the pages and downloads a JSON report with page counts, differing pages and a similarity percentage.

How to use Compare PDFs

  1. Add the two PDFs to compare.
  2. There are no options to set.
  3. Press “Compare PDFs” to download the JSON report.

Where your file is processed

Your file is processed in your browser and is not uploaded to a Kuklabs server. The page does contact Kuklabs to check your plan, without sending the file.

Frequently asked questions

What does the comparison look at?

The extracted text of each page. Layout, images and formatting are not compared.

Does it work on scanned PDFs?

Not usefully. Scanned pages have no text layer, so run OCR PDF on them first.

What if I add more than two files?

Only the first two files are compared. The tool needs at least two files.