1-Byte Developer Tools / JSON

JSON Formatter

Validate, pretty-print and tidy JSON with a single click. The free plan is tuned for everyday payloads; premium lifts limits and sorts keys at every level for stable diffs and cleaner reviews.

Runs entirely in your browser · JSON never leaves your device.

Plan: Free Premium mode will unlock deeper limits, key sorting & downloadable output. Sign in to unlock history & presets (coming soon)

Input Raw JSON payload

Paste JSON from your API, log or config and we’ll tidy it up.

0 chars

Tip: if you’re debugging, include the smallest payload that still breaks.

Output Formatted JSON

Errors show up here too, with basic hints when something looks off.

Mode: Free · pretty-print only

Paste some JSON on the left and press “Run formatter”.

Free plan: tuned for everyday payloads up to ~20k characters. As premium rolls out, limits will lift for bulk use and log-heavy workflows.

Premium will also let you download the formatted JSON as a file for attaching to tickets and code reviews.

Part of the 1-Byte developer toolset.

Coming later: saved snippets per project, one-click sharing with teammates, and bulk JSON clean-up for log files.

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