Encoding
URL Encoder / Decoder
Percent-encode or decode URLs and query strings. RFC 3986 compliant, UTF-8 safe, with component and full-URL modes.
Output will appear here…Why use our URL Encoder / Decoder?
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.
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OpenJSON Minifier
Strip whitespace and shrink JSON payloads to the smallest possible size for APIs, storage, and network transfer.
OpenJSON Tree Viewer
Explore nested JSON as an interactive tree — expand, collapse, filter and copy JSON paths of any node.
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.
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