JSON Tools
Every tool runs in your browser. Paste, convert, copy. No sign-up, no upload, 5 MB file limit.
JSON Formatter & Validator
Format, validate, minify, and sort keys. The main tool, with tree view and one-click repair.
JSON Viewer (Tree View)
Explore any JSON document as a collapsible tree in your browser. Click a key to copy its JSONPath, click a value to copy it, and page through large arrays without freezing the tab.
JSON Fixer: Repair Invalid JSON
Repair broken JSON in your browser. Strips markdown fences and prose, fixes trailing commas, single quotes, comments, unquoted keys, Python literals and unclosed brackets, and lists every problem it detected.
JSON to CSV Converter
Convert a JSON array of objects to CSV in your browser. Nested objects are flattened to dotted columns, values are quoted correctly, and Excel-friendly output is one click away.
CSV to JSON Converter
Convert CSV with a header row into a JSON array of objects in your browser. Numbers and booleans are detected, leading-zero codes stay strings, and the delimiter is picked up automatically.
JSON to YAML Converter
Convert JSON to clean YAML in your browser with 2, 3 or 4 space indentation. Strings that a YAML parser would read as numbers, booleans or dates are quoted so they survive the round trip.
YAML to JSON Converter
Convert YAML to JSON in your browser. Multi-document files become an array, anchors and aliases are resolved, and only null, true, false and plain numbers are typed, so yes, NO and dates stay strings.
JSON to XML Converter
Convert JSON to XML in your browser. Choose the root and array item element names, nulls become xsi:nil, keys are sanitised into valid XML names, and text is escaped.
XML to JSON Converter
Convert XML to JSON in your browser. Attributes are kept as @_name keys, repeated tags become arrays, numbers and booleans are detected, and invalid XML reports the line and column.
JSON Compare (Diff)
Compare two JSON documents in your browser and get a structural diff that lists every changed, added, and removed value with its JSONPath. Key order and whitespace are ignored.
JSONPath Query Tester
Test JSONPath expressions against your JSON in the browser. Pick an expression, see the matches as a JSON array with a count, and explore the results in tree view.
JSON Escape / Unescape
Escape text into a JSON string literal, unescape one back to plain text, or stringify a whole JSON document to embed it inside another JSON value or in source code.