FileTools

JSON formatter

Validate, format, or minify JSON data.

How it works

  • Enter or paste the content
  • Select “Format JSON” and let your browser process it
  • Review the result and download it to your device

Why use FileTools for json formatter?

The JSON formatter parses the input before producing readable indentation or a compact representation. A syntax error is reported instead of silently returning altered data.

Best suited for

Inspecting API responses, reviewing configuration files, finding syntax mistakes, and preparing compact payloads.

Input and output

Input: Valid JSON text representing any JSON value.

Output: Formatted or minified JSON text that can be copied or downloaded.

Known limitation

Formatting does not validate an application-specific schema and does not preserve insignificant original whitespace.

Practical tips

  • Use formatted mode while debugging and minified mode only when smaller text is needed.
  • Treat large integer identifiers carefully because some software may interpret them as numbers with limited precision.