Redline contracts the way Word reviewers expect
Review vendor paper and counterparty drafts inside Vaquill AI, then export a DOCX with real Word Track Changes. Side-by-side viewer plus an AI change summary on every redline.
What You Get
Real Microsoft Word Track Changes export
The exported DOCX contains native <w:ins> and <w:del> revisions. Accept, reject, and continue negotiation in Word with no fidelity loss.
PDF-to-DOCX cross-format compare
Drop a scanned counterparty PDF on one side and your clean DOCX draft on the other, and get a real redline back.
AI Change Summary
A one-paragraph read on what substantively changed and why it matters. Cosmetic noise (case, whitespace, numbering) is skipped so you see the negotiation moves.
In-browser side-by-side viewer
Synchronized scroll, change-list sidebar, jump-to-change navigation. Read-only by design so the canonical artifact is always the DOCX you export.
Litera-style tunables
Ignore case, whitespace, numbering, or formatting. Compare tables, footnotes, headers, and footers. Save defaults as a profile and reuse across matters.
Compare directly inside a matter
Pick two existing drafts, a prior version, or any two uploads without leaving the matter. Comparisons attach to the folder as first-class artifacts.
How Document Comparison Works in Vaquill AI
Why a real DOCX matters
The product is the redline DOCX. Lawyers consume comparisons inside Word because that is where they continue to negotiate.
- ✓Same WmlComparer algorithm legal tech has used for a decade, with an actively-maintained .NET binary.
- ✓Output is bit-for-bit indistinguishable from Litera.
- ✓LibreOffice headless fallback for .doc, .rtf, and .odt inputs.
Cross-format and entry points
Real cases are never tidy. A clean DOCX comes back as a scanned PDF, a template lives in DOCX while the executed version is in PDF.
- ✓Accepted formats: .docx, .doc, .pdf, .rtf, .odt. Per-file: 50 MB, 500 pages.
- ✓Drag-and-drop, browse, or pick from drafts, prior versions, matter documents, or recent uploads.
- ✓In the editor: "Compare with..." against any other draft, upload, or version.
Tunables and profiles
The settings panel matches what Litera and Draftable users already know.
- ✓Granularity: word, sentence, or character-level diff.
- ✓Ignore case, whitespace, numbering, or formatting-only changes.
- ✓Save settings bundles as named profiles and reuse them across matters.
How It Works
Get started in minutes, not weeks.
Pick two documents
Drop in two files, or pick from drafts, versions, matter documents, or recent uploads. Original on the left, Revised on the right (one-click swap for the inevitable mistake).
Tune the compare
Use Default, or pick a saved profile, or toggle case / whitespace / numbering / formatting / tables / footnotes inline before running.
Review in the browser
Side-by-side viewer with synchronized scroll, a change-list sidebar, and an AI change summary that explains what substantively moved.
Export and continue in Word
Download the redlined DOCX with real Track Changes. Open in Word and continue accepting, rejecting, or commenting as you would on any tracked file.
Frequently Asked Questions
Is the exported DOCX real Word Track Changes or an image overlay?
Real Track Changes. The output contains native <w:ins> and <w:del> revisions. Word's Reviewer pane handles it like any other tracked-changes file. No images, no PDF overlays, no proprietary formats.
Can I compare a DOCX against a PDF?
Yes. DOCX-to-DOCX, PDF-to-PDF, and cross-format DOCX-to-PDF are all supported. The output is a real DOCX with Track Changes regardless of input format.
How does this compare to Litera Compare or Draftable Legal?
We use the same WmlComparer algorithm that legal tech has used for a decade, packaged with an actively-maintained .NET binary. Output is bit-for-bit indistinguishable. Difference: it lives inside your matter, your folders, and your other Vaquill AI work, with an AI change summary on every redline. No separate seat, no separate tool.
Does Vaquill AI detect hidden redlines in returned drafts?
A hidden-redline detector is on the roadmap. It will warn when an uploaded "clean" DOCX contains accepted-but-not-cleared revisions or hidden change history.
Can I bulk compare one template against many executed contracts?
Bulk compare (1 template vs N executed contracts) is on the v2 roadmap. v1 is exactly two documents per comparison.
Where do comparisons live after I run them?
Comparisons are first-class artifacts attached to the folder or matter they were run in. You can return to a comparison later, re-export with different settings, or share with co-counsel via the same access model used for drafts and research.
Can I edit the redline in the browser?
No, by design. Industry pattern is read-only viewer plus Word for edits, matching Litera, Draftable, and iManage. The canonical artifact is always the DOCX you export, and edits continue in Word where opposing counsel will work on it.
How much does legal redline software cost?
Standalone redline tools like Litera, Draftable, and Workshare typically run $250 to $1,000 per seat. Vaquill AI includes document comparison in its all-in-one per-seat suite, so you are not paying for a separate seat, tool, or login just to redline.
How do I compare two versions of a contract and export clean redlines?
Upload the two versions (DOCX or PDF, in any combination) and Vaquill AI produces a real Word Track Changes file with native ins and del revisions, plus a plain-English summary of what substantively changed. You review it in Word, where opposing counsel will work on it too.
Can AI summarize what actually changed between two versions?
Yes. Every comparison ships with an AI change summary: one plain-English paragraph on what substantively moved, so you are not reading a wall of tracked changes to find the two edits that matter.
Stop paying $250-$1,000/seat for a separate redline tool
Compare lives inside Vaquill AI. No second seat, no second tool, no second login. Real Word Track Changes out, AI change summary in.