JSON Reader / Formatter

Paste your JSON below and choose an action. Format makes it readable with neat indentation, Minify compresses it to a single line, and Validate checks it for errors.

JSON input

Indentation

Output

About this JSON Reader / Formatter

This JSON reader is a free online tool for viewing, validating, and tidying up JSON data. JSON (JavaScript Object Notation) is the most common format for sending data between websites, apps, and APIs, but raw JSON is often delivered as one long, unreadable line. Paste it here and the tool reformats it with clean indentation so you can read the structure, spot the values you need, and catch mistakes quickly.

Use Format (also called beautify or pretty-print) to expand JSON into an indented, easy-to-read layout, and pick 2 spaces, 4 spaces, or tabs to match your preferred style. Use Minify to strip out all whitespace and produce the smallest possible single-line version, which is handy for saving space or pasting into config files. Use Validate to confirm the JSON is well-formed; if there is a problem, the tool reports the error message so you can find and fix it.

Developers, testers, and data analysts use JSON formatters every day to inspect API responses, debug configuration files, and prepare sample data. Because everything runs locally in your browser, your data is never uploaded or stored, which makes it safe to use with private or unpublished content.

Note: This tool parses standard JSON. Features that are not part of the JSON specification — such as comments, trailing commas, or single-quoted keys — will be reported as errors. Remove or correct them, then try again.