For Legal Professionals
Upload the original draft and the version they sent back — see every word they changed, added, or removed, clause by clause. Never sign without knowing exactly what changed.
See it in action
Use cases
See exactly what they changed. Every addition and deletion highlighted, clause by clause.
Compare old terms against new terms. Know exactly what changed before signing or approving.
Compare clause-level changes across long agreement bodies. Spot additions buried in dense legal text.
Confidentiality
Law firms have confidentiality obligations. We have no technical ability to see your documents. This is not a policy promise — it is an architectural fact. There is no server receiving your file data. All parsing and comparison happens locally in JavaScript inside your browser tab.
Compare Files works entirely in your browser. There is no server that receives, processes, or stores your file data. Not because we promise not to look — but because we architecturally cannot. All comparison logic runs locally in JavaScript.
Why no AI
Compare Files uses a deterministic, logic-based engine — not a language model. It reads both files and reports every change that is actually there. It can’t summarize away a deleted line, invent a difference that isn’t in the file, or “mostly” get a number right. What you see is exactly what changed — nothing added, nothing missed. For contract review, that means no AI misreading a clause or quietly glossing over a deleted term.
Your files never leave your device. Everything runs in your browser — no uploads, nothing stored.
No AI, so no hallucinations. A deterministic engine reports every real change and never invents one.
No upload, no server wait. Comparisons run locally and keep working offline once the page has loaded.
FAQ
All contract comparison happens entirely in your browser — no files are uploaded to any server, ever. Your NDAs, lease agreements, and client documents never leave your device, so there is no data breach risk and no need for special data handling agreements.
You can compare contracts and legal documents in PDF or DOCX format. Whether you are reviewing a draft NDA sent as a PDF or tracking changes between two Word versions of an employment agreement, both formats work side by side.
Word's compare only works when both files are DOCX and produces a tracked-changes document you then have to read through. Compare Files highlights every addition, deletion, and modification inline — and it works on PDFs too, so you can catch redlines even when opposing counsel sends a PDF instead of a Word file.
The comparison engine is built for precision — it catches every clause change, punctuation edit, and word substitution, even in lengthy agreements. Lawyers use it to verify that a "final" version matches exactly what was negotiated before signing.
PDF and DOCX document comparison is included in Pro — €9.99/mo, no per-document fees. Plain text pasted directly is always free, with no usage limits.
All tools
Document comparison unlocks with Pro — €9.99/mo. No per-document fees.
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