00 / Comparator
See exactly what changed between two Word documents.
Drop in an original and a revised .docx and get a word-level redline in seconds — insertions underlined, deletions struck through, table changes called out. Nothing is uploaded to a server.
Free. No sign-up required to start.
original.docx → revised.docx
2 paragraphs modified · 9 words added, 2 removed
2. Fees and Payment
The Client will pay the Provider a monthly fee of $8,000$9,500, payable within 3015 days of the invoice date.
Public launch — Week 16
Every insertion and deletion, word-level — not just "this paragraph changed."
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1. Upload both versions
Drag the original into the "Version A" box and the revised copy into "Version B" — or click "Choose file" on each.
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2. Get an instant redline
Every insertion, deletion, and table change is called out word by word, generated locally in seconds.
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3. Download both copies
A marked-up redline .docx and a clean final copy — both real files, ready to send.
01 / Why
"Looks the same to me" is how the wrong version gets signed.
Comparing two versions of a document by eye misses things — a changed number three paragraphs down, a deleted clause, a table cell that quietly moved. This tool diffs both files word by word and shows you precisely what moved, what was added, and what was removed, so nothing slips through because it looked fine at a glance.
02 / Features
Built for people who actually read every line
Word-level redlines
Every change is highlighted down to the word — insertions underlined, deletions struck through — not just "this paragraph changed."
Table changes included
Added, removed, and edited table cells are called out too, not silently skipped the way many diff tools handle tables.
Two clean downloads
A ready-to-send clean copy and a separate marked-up copy, both real .docx files that open in Word, Google Docs, or LibreOffice.
Nothing leaves your browser
Both documents are parsed and compared entirely client-side. Nothing is uploaded to a server, ever.
Privacy, not a checkbox
Neither document is ever uploaded. You can verify it yourself.
Both .docx files are parsed and diffed locally, right in this tab. Open your browser's network inspector before comparing — you won't find a single request carrying the file contents.
- No upload, ever
- Open DevTools and check
- Built for contracts and NDAs
Compare two documents — it's free.
No account needed to start.
03 / FAQ
Comparator FAQ
Do both documents get uploaded to compare them?
No. Both files are parsed and compared locally in your browser. Neither one is sent to a server.
Does it work if the original already has tracked changes in it?
Not yet — documents with existing tracked changes, comments, headers, or footers aren't supported. You'll get a clear message instead of a corrupted result.
Can I compare two versions saved in the editor, not just uploaded files?
Yes. Any two saved checkpoints from the editor — adjacent or ten apart — can be compared directly, in either order.
What do I actually get at the end?
Two .docx downloads: a redline copy with every change marked, and a clean copy of the final result — both real files, not screenshots or PDFs.