JSONPretty

JSON Formatter & Validator

Paste JSON — pretty-print it, minify it, or get a clear syntax error showing what went wrong.

Indent

JSON input

Output

{
  "name": "GintiCalc",
  "tools": 40,
  "categories": [
    "finance",
    "math"
  ]
}

Strict JSON rules

Keys must be double-quoted strings. No trailing commas. No comments. No single quotes. JavaScript object literals are not JSON — `JSON.parse` rejects them.

Related Developer calculators

Base64 Encoder / Decoder

Encode or decode Base64 instantly, in both directions.

Open

URL Encoder / Decoder

Percent-encode or decode any URL or query string.

Open

UUID Generator

Generate cryptographically random UUID v4s.

Open

Hash Generator (SHA-256)

SHA-256 hash any text, in your browser.

Open

Loading…