JSON Tools
JSON formatters, validators, converters and diff tools.
18 tools · all run in your browser
JSON Formatter
Format and prettify JSON with syntax highlighting
JSON Validator
Validate JSON syntax and structure
JSON Viewer
Explore JSON data in a tree view
JSON Stringify
Convert JSON to escaped string representation
JSON Patch
Generate or apply RFC 6902 JSON Patch operations
JSON Diff
Compare two JSON documents and show structural differences
JSONPath Tester
Test JSONPath expressions against a JSON document
JSON Sort Keys
Recursively sort all keys in a JSON document alphabetically
JSON Flatten / Unflatten
Flatten nested JSON to dot-notation or unflatten back
JSON Minifier
Minify JSON with size statistics
JSON Merge / Deep Merge
Deep merge two JSON objects together
JSON ↔ JSON5
Convert between strict JSON and relaxed JSON5 format
NDJSON / JSONL Viewer
Parse and display newline-delimited JSON line by line
JSON Path Finder
Enter JSON and a value to get every JSONPath that matches
Smart JSON Diff
Structural diff between two JSON docs with summary stats
JSON Escape String
Escape any text as a JSON-safe string with \n \t \uXXXX handling
JSON Unescape String
Reverse JSON escape sequences back to raw text
JMESPath Tester
Query JSON with JMESPath expressions + live result + examples