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Compare PDFs — Free, In-Browser Text Diff

Free PDF compare tool. Drop two PDFs, see added and removed text highlighted. Runs in your browser — no upload.

Compare PDFs

Files never leave your browser

Original (A)

Drop the first PDF

Compared in your browser

Changed (B)

Drop the second PDF

Compared in your browser

About this tool

Spot every text change

This tool extracts the text from both PDFs and runs a word-level diff, highlighting additions in green and deletions in red. It compares text content, not visual layout — perfect for contract revisions, document versions, and proofreading. Scanned PDFs without a text layer can't be compared this way.

How to use the Compare PDFs

Takes about a minute. No signup, no download, your data stays in your browser.

  1. 1
    Open the tool. Scroll up to the Compare PDFs above — it loads instantly in your browser, no install needed.
  2. 2
    Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
  3. 3
    Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.

Frequently asked questions

Common questions about the Compare PDFs.

Is the Compare PDFs free to use?

Yes. The Compare PDFson 7BusyBoss is completely free — no signup, no paywall, no usage cap.

Do I need to sign up to use the Compare PDFs?

No. The Compare PDFsworks instantly in your browser — no account needed. Signing in with Google is optional and only unlocks features like saving favorites and higher AI build limits.

Does the Compare PDFs work on mobile?

Yes. Every tool on 7BusyBoss is mobile-responsive and works in any modern browser — Chrome, Safari, Firefox, Edge — on phones, tablets and desktops.

Is my data safe when I use the Compare PDFs?

Yes. The Compare PDFsruns entirely in your browser — your inputs never leave your device unless the tool explicitly fetches public data (e.g. currency rates). We don't store the values you type.

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