Private / No Upload

JSON formatter vs JSON viewer

A formatter rewrites JSON for readability. A viewer helps inspect structure, validate syntax, and understand objects or arrays.

Runs in your browser

HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

No upload

HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

No account

HappyFormatter tools process pasted snippets client-side for quick, privacy-first developer workflows.

Key differences

Formatting changes whitespace.

Viewing adds inspection context.

Both should preserve data values when JSON is valid.

Compact JSON

The formatter expands compact JSON while the viewer helps inspect the structure.

{"id":1,"active":true}

Output

{
  "id": 1,
  "active": true
}

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