JSON
JSON Tree Viewer
Explore nested JSON as an interactive tree — expand, collapse, filter and copy JSON paths of any node.
JSON Tree Viewer
Why use our JSON Tree Viewer?
100% private
Everything runs in your browser. Your data never leaves your device — safe for production payloads.
Instant results
No round trips, no rate limits, no login. Format, validate and inspect megabytes of JSON in milliseconds.
Standards-first
Follows RFC 8259 / ECMA-404 exactly. Reports errors with precise line and column diagnostics.
Related developer tools
JSON Validator
Validate JSON syntax against RFC 8259 in real time. Precise line and column error reporting, 100% client-side.
OpenJSON Viewer
Interactive collapsible tree viewer for large JSON documents with search, copy-path, and syntax highlighting.
OpenJSON Minifier
Strip whitespace and shrink JSON payloads to the smallest possible size for APIs, storage, and network transfer.
OpenJSON Compare
Side-by-side comparison of two JSON documents with structural highlighting to spot differences instantly.
OpenJSON Diff
Structural diff of two JSON objects or arrays showing added, removed and modified keys with paths.
OpenJSON to CSV Converter
Convert JSON arrays to CSV rows with automatic header detection and configurable delimiters.
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