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Compare PDF

Highlight the text differences between two PDF versions.

Drop your files here

.pdf

Compares text content, not visual appearance. Only the first two files are compared.

How to use Compare PDF

  1. 1

    Choose your files (.pdf) or drop them into the box.

  2. 2

    No settings needed: the defaults just work.

  3. 3

    Click “Compare PDF” and download the result: report (pdf + html).

Your documents are processed entirely inside your browser. They are never uploaded to PDF100 or any third party, so Compare PDF is suitable for confidential files. Read our privacy policy.

Compare PDF questions

Is Compare PDF free?

Yes. Compare PDF on PDF100 is free with no account, no watermark and no daily limit. The site is supported by advertising.

Are my files uploaded when I use Compare PDF?

No. Compare PDF runs entirely inside your browser tab. The file is read and processed on your device and the result is saved straight to your downloads, so no copy reaches our servers.

Which files does Compare PDF accept?

Compare PDF accepts .pdf, and you can add several files at once. The result is: report (pdf + html).

Is there a file size limit?

There is no fixed limit set by PDF100. Because processing happens on your device, the practical limit is your browser memory. Very large files work best on a desktop computer.

Does Compare PDF work on my phone?

Yes. Compare PDF works in current versions of Chrome, Safari, Edge and Firefox on desktop and mobile. Large documents are faster on a computer.

Are there any limitations?

Compares text content, not visual appearance. Only the first two files are compared.

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