Hey Product Hunt! 👋 Built this after watching my team spend 2 hours comparing a 200-page contract — only to miss the one change that mattered. A single deleted zero. $50,000 became $5,000. The root problem? Every compare tool we tried matches by page position. Page 3 vs Page 3. But the moment someone adds a page, removes a section, or shuffles the order — every comparison after that is garbage. So we built CatchDiff. It matches content to content. Doesn't matter if pages shifted, sections moved, or someone buried changes in 15 pages of fine print. What used to take hours now takes minutes. No false positives. No missed changes. We've tested it with: → Legal contracts (92 min → 3 min) → Engineering drawing sets (2 days → 15 min) → Academic thesis revisions (31 hours → 94 min) → Freelancer SOWs (finally, proof of scope creep) Would love to hear — what documents do you spend the most time comparing? Curious which use cases we should prioritize next.

CatchDiff — 92 Minutes → 3 Minutes

Document comparison that actually works.

Document comparison that actually works.