JSON Formatter

🔒 100% private — your files are processed locally and never leave your device.

JSON is the language APIs speak, but raw JSON often arrives as one long, unreadable line. The JSON Formatter pretty-prints it with clean indentation, minifies it back down when you need it compact, and pinpoints exactly where any syntax error is — making it an everyday companion for developers working with data.

How to use the JSON Formatter

1. Paste your JSON into the editor.
2. Click Beautify to indent it, or Minify to compact it.
3. If the JSON is invalid, read the error message and fix it.
4. Copy the formatted output.

Why formatting and validation help

Indented JSON is dramatically easier to read, debug and understand — nested objects and arrays line up visually instead of running together. Minified JSON, on the other hand, strips every unnecessary space to save bytes for transmission. Validation is the quiet hero: a single misplaced comma or missing bracket breaks an entire JSON document, and the tool tells you precisely where the problem is so you are not hunting through a wall of text.

Tips for working with JSON

• Beautify before debugging to see the structure clearly.
• Minify before sending to reduce payload size.
• Watch for trailing commas, a common cause of invalid JSON.
• Keys and strings need double quotes; single quotes are not valid JSON.

Validation uses your browser’s native JSON parser, so it follows the exact specification, and your data is parsed locally and never uploaded.

Quick reference