Free JSON Tools Online – Beautifier, Minifier, Converter & More
Welcome to our comprehensive suite of free JSON tools, purpose-built for developers, data engineers, and API professionals. Every tool in this collection runs entirely within your browser — no server uploads, no data retention, and no registration required.
JSON (JavaScript Object Notation) is the lingua franca of modern web APIs, configuration files, and NoSQL databases. Whether you are inspecting a REST API response, debugging a malformed payload, optimizing bundle sizes, or migrating data between formats, these utilities provide instant results with zero setup.
Our JSON toolkit covers the complete development workflow: beautify minified payloads into readable, indented structures; minify large files to reduce HTTP response sizes; validate strict RFC 8259 compliance with precise error messages; view and explore nested object hierarchies; convert seamlessly between JSON and XML formats; and edit configurations with live validation feedback.
All computations use native browser APIs — JSON.parse(), JSON.stringify(), and DOMParser — ensuring bit-perfect, standards-compliant output with no third-party library dependencies. Your JSON data never leaves your machine.
json beautifier
Paste/type JSON -> beautify with 2/4/tab indent, sort keys option, copy & download output. Full client-side validation with error highlighting.
json parser
Parse JSON string -> show parsed key/value pairs as pretty-printed object tree, data type list, key count. Error reporting with position.
json editor
Edit JSON in textarea with live validation status, line count, char count, key count. Copy and download output.
json viewer
View and explore JSON with formatted output, key count, nesting depth, and type summary.
json minifier
Minify/compress JSON by stripping all whitespace. Show before/after char count and compression ratio. Copy & download.
json to xml
Convert JSON to XML. Root element configurable. Pretty-print XML output. Copy & download as .xml.
xml to json
Convert XML to JSON. Handles attributes, text nodes, nested elements. Pretty-print JSON output. Copy & download.