JSON Lens
Interactive JSON explorer with graph visualization, multi-format support, and schema inference. Works offline as a PWA.
Live demo available on desktop, or open it directly:
Open JSON LensJSON Lens is an interactive data explorer that handles JSON, YAML, XML, TOML, and HTML. Paste or drop your data, and it gives you multiple ways to understand it — tree view, interactive graph, Miller columns, and schema inference.
Features
- Multi-format parsing — JSON, YAML, XML, TOML, HTML. Auto-detects the format on paste
- Interactive graph view — Visualize data as an expandable tree graph with auto-layout
- Miller columns — Navigate large structures with a Finder-style column browser
- Smart format detection — Recognizes URLs, dates, UUIDs, JWTs, IPs, country codes, and 15+ formats inside string values
- Schema inference — Switch to schema mode to see inferred types with optional field markers
- PWA — Install it, works fully offline. No backend, no data ever leaves your browser
Why Build This
Every JSON viewer I tried was either too basic (just a collapsible tree) or too heavy (full IDE-like tools). I wanted something in between — fast, visual, and smart enough to tell me what’s inside my data without me having to dig through it manually.
Privacy
Zero data collection. Everything runs client-side. Your data never touches a server. Available in 8 languages.