TTinyToolbox

DEVELOPER TOOLS

JSON Formatter & Validator

Format messy JSON, minify it for compact output, or validate its syntax. Processing happens in your browser; the input is not sent to our server.

Paste JSON above, then choose Format, Minify, or Validate.

Privacy note: this tool uses your browser's built-in JSON parser. No account or upload is required.

How to use this JSON tool

  1. Paste JSON into the editor.
  2. Select Format JSON to indent it for readability, or Minify to remove unnecessary whitespace.
  3. Select Validate to check whether the input is valid JSON.
  4. Use Copy output to copy the current editor contents.