Cisco Config Diff Tool

Upload or paste two Cisco IOS or NX-OS configuration files and instantly see what changed — with a generated migration script you can run directly on your device. Supports IOS, IOS-XE, and NX-OS. Free, no account needed.

• Hierarchical config comparison (section-aware, not just line-by-line)
• Auto-generated IOS migration script from the diff
• Visual added / removed / modified highlighting
• Works with IOS, IOS-XE, and NX-OS configs
• No file size limits — paste or upload

Part of CiscoTools.dev — free tools for network engineers, built by Brad McCloskey.