Is it safe to paste sensitive JSON here?

Yes — all processing happens locally in your browser. Nothing is sent to any server. You can verify this by inspecting network requests.

Does it handle large JSON files?

It handles most typical use cases well. Very large files (several MB) may be slow depending on your device's memory, but there is no hard limit imposed by the tool.

Can I minify JSON too?

Yes. Switch the indent selector to 0 spaces and the output will be compact single-line JSON.

JSON Formatter & Validator

All tools › JSON Formatter ● Live Developer Tools

Input JSON

Indent

Validation

✓ Valid JSON

Quick inspection

›Top-level type: Object
›Keys (2): tool, status

Formatted output

{
  "tool": "Small Web Apps",
  "status": "ready"
}

Input JSON

Validation

Quick inspection

Formatted output

More Developer Tools tools

CSS Formatter

HTML Formatter

JSON Path Extractor

JSON Schema Generator

XML Formatter

.dockerignore Generator