Compare two PDFs

See exactly what changed between two versions of a contract or report, with additions and deletions highlighted. No more reading both line by line.

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How to compare two PDFs

  1. 1

    Upload two versions

    The original and the revised PDF.

  2. 2

    Compare

    PDFTEK lines up the text and marks every change.

  3. 3

    Review

    Jump through additions and deletions.

Why PDFTEK for Compare PDF

  • Additions and deletions highlighted
  • Great for contract redlines
  • Optional AI summary of what changed
  • No software to install

Price

Free without an account: 3 tasks a day (6 with a free account), files up to 20 MB.

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Compare PDF: frequently asked questions

Can AI summarize the changes?

Yes. An AI summary of the important changes is available. Uses AI credits: 250 credits cost $2.99 and never expire, and Pro includes 400 a month.

Is it really free?

Yes. Free without an account: 3 tasks a day (6 with a free account), files up to 20 MB. No watermark is added. If you need more, a Day Pass is $1.99 for 24 hours and Pro is $5.99/month.

Do I need to install anything?

No. PDFTEK runs in your web browser on Windows, Mac, Linux, iPhone, iPad and Android. Nothing to download or install.

Is it safe to upload my files?

Files are sent over HTTPS and stored in your private workspace, never shared or used to train AI. Files from sessions without an account are deleted automatically after 24 hours, and you can delete any file yourself at any time.

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