Free Online JSON Tools

JSONLens is a free, open-source suite of JSON tools that runs entirely in your browser. No data is ever sent to a server — your JSON stays private. Tools include: JSON formatter & beautifier, JSON validator with error highlighting, JSON diff & comparison, interactive tree viewer, JSON minifier, JSON-to-YAML / JSON-to-CSV converter, and JSON path finder.

Why JSONLens?

• 100% Private — All processing happens client-side
• Instant — No server round-trips, works offline
• No Ads Blocking Content — Clean, focused interface
• All-in-One — 7 essential JSON tools in one place