JSON Formatter
Paste compact or messy JSON and get it back neatly indented with your chosen spacing.
How it works
- 1
Paste any JSON into the input — it can be compact, multi-line, or oddly indented.
- 2
Pick your preferred indentation (2 spaces, 4 spaces, or tab) and toggle key sorting.
- 3
Copy or download the clean, readable result. Nothing leaves your browser.
Questions
What happens when my JSON is invalid?
The tool shows an error explaining the problem so you can fix it before formatting.
Does sort-keys change anything other than order?
No — only the key order changes. All values, including nested arrays, stay intact.
Is my data sent to a server?
No. Formatting runs entirely in your browser; no data leaves your device.
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