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JSON Formatter & Viewer

Format, beautify, minify, and validate JSON. Explore your data with the interactive tree viewer. All processing happens locally in your browser.

1 objects
0 arrays
0 keys
0 strings
Depth: 0
Input JSON
Paste or type your JSON here
Output
Formatted or tree view

Format & Beautify

Add proper indentation and make JSON readable

Tree Viewer

Interactive tree view with search & expand

Minify

Remove whitespace to reduce file size

Validate

Check JSON syntax with detailed errors

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What this tool does

Inspect API responses and configuration by formatting, minifying or expanding JSON.

How to use it

Paste strict JSON, choose indentation, then Format or Minify. Use the viewer to inspect nested values.

Worked example

{"a":1,"b":[true]} minifies to the same string; formatting adds whitespace without changing those values.

Limitations and checks

Comments and trailing commas are invalid. JavaScript numbers can round integers outside ±9,007,199,254,740,991; quote identifiers that need exact digits. Large trees can slow the browser.

How your data is processed

The operation runs in your browser. Copy and download actions use your device. Where Save work is offered, a local copy is stored; eligible work can sync only under your enabled account settings. See Privacy for site analytics and storage details.

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