PDFTwin

PDFTwin

Compare PDFs side by side free

Review contract revisions and design proofs with two PDFs rendered next to each other. Linked scroll keeps both panes aligned.

Compare PDFs now

Why use PDFTwin

  • Side-by-side viewer in browser
  • Linked scroll and zoom
  • No server upload for viewing
  • Free for contract review workflows

How it works

  1. 1
    Upload two PDFs

    Add left and right documents.

  2. 2
    Enable linked scroll

    Toggle sync to align both panes.

  3. 3
    Review

    Zoom in on details with linked magnification.

Frequently asked questions

Do compare files upload to your server?
No. PDF compare renders locally with PDF.js in your browser.
PDFTwin

The one-stop file conversion workspace for modern businesses.

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Files are processed in memory and never stored permanently. Pro subscriptions are billed securely through PayPal — cancel anytime from your PayPal account.