JSON Formatter
Developer ToolsToolio JSON Formatter turns compact or chaotic JSON into a readable tree with consistent spacing. Paste a payload, format it instantly, and copy the result without uploading a byte. Everything runs in your browser so drafts, tokens, and config files stay on this device.
248k uses · Runs locally
How to use
- 1Paste or drop JSON into the editor.
- 2Choose an indent size that matches your team style.
- 3Run format to expand nested objects and arrays.
- 4Copy the pretty JSON or keep editing locally.
Benefits
- Readable nesting without leaving the tab.
- Spot missing commas and brackets faster.
- Confidential payloads never leave the browser.
Frequently asked questions
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