When opposing counsel returns a revised agreement, you need to identify every change before responding. Track Changes is unreliable when documents have been through multiple rounds — accepted changes, rejected changes, and manual edits create a messy revision history that's easy to miss.

A clean comparison of the two final documents — what was in version 1 versus what's in version 2 — is the safest way to know what changed.

Pick the right tool, then run the comparison

For Word documents (.docx): use the Document Compare tool
For PDFs (signed agreements, exhibits, exports): use the PDF Compare tool
For plain text clauses or pasted excerpts: use the Text Compare tool
Upload or paste both versions, then read the summary bar before drilling into the diff

Each tool extracts the text and runs a word-by-word comparison. The summary bar gives you an instant overview: how many change regions, how many words added or removed, and the overall similarity percentage. You can navigate directly to each change without reading the entire document.

What clauses to scrutinise

  • Defined-term substitutions — quiet swaps that change the meaning of every later reference
  • Indemnity scope — narrowed coverage, new carve-outs, capped exposure
  • Termination triggers — added events, shortened cure periods
  • Choice of law and venue — moved to a less favourable jurisdiction
  • Auto-renewal and notice windows — quietly extended evergreen terms
Privileged documents stay on your device. Many online comparison tools upload files to their servers. ChangeChecks runs the entire comparison in your browser — the documents never leave your device. This matters when you're comparing NDAs, employment agreements, M&A documents, or any text covered by legal privilege.

Beyond text: comparing signed PDFs

When you receive a signed PDF and need to verify it matches the agreed version, upload both PDFs to the PDF Compare tool. The tool extracts and compares the text content, catching any changes made to the document after signature pages were exchanged.

For visual verification of page layouts (checking that signatures, stamps, or formatting haven't changed), use the Image Compare tool with screenshots of individual pages.