Instant JSON Formatter & Validator
Paste your raw JSON below to instantly prettify, validate, or minify it. Zero data leaves your browser.
STEP 1
Paste raw JSON code into the input field.
STEP 2
Click format to parse and validate syntax locally.
STEP 3
Copy the clean output instantly.
INPUT
OUTPUT
Ready
Why Use JustJSON Formatter?
Working with JSON APIs and configuration files requires clean formatting to catch syntax errors like missing brackets, trailing commas, or unquoted keys. JustJSON runs entirely client-side inside your browser sandbox. Your data never gets uploaded to an external server, making it completely secure for debugging payloads and environment keys.