Compare DOCX and text files right in your browser. Nothing leaves your computer. No uploads. No cloud. No waiting. Also available as a native Mac app.
DOCX, DOC, TXT, MD, RTF, and PDF. Drop them in and compare.
Your documents are never uploaded anywhere.
Relocated paragraphs shown as moves, not separate deletes and adds.
Download a .docx with real Word Track Changes markup. Open it in Word, accept or reject.
No server round-trip. Compare starts instantly, finishes in seconds.
The first dedicated redline tool built for Mac. Native desktop app available — right-click any document in Finder to Fredline it. Windows too.
Drag in the original and revised documents. Fredline auto-detects which is which.
One click. Deletions, additions, and moves are highlighted instantly.
Export as a .docx redline — with Track Changes if you want it. Open in Word and go.
With Fredline Desktop, skip the browser entirely. Right-click any document in Finder, select "Fredline It," and your redline is generated instantly. One step instead of three. Learn more →
Every other redline tool was built for Windows first. Most never made it to Mac at all. Fredline runs natively on macOS — and on Windows too.
Try Fredline for free. No account needed.