JSON Editor
Write, validate, and edit JSON with a side-by-side tree representation. Fast, free, and fully client-side.
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How the JSON Editor Works
Full-featured online JSON code editor with line numbers, code folding, auto-formatting, and error linting.
Usage Example
Edit and test JSON configuration files in a clean, syntax-highlighted workspace.
Frequently Asked Questions
Can I format the JSON while editing?
Yes, click the "Format JSON" button in the toolbar to re-indent your document instantly.
Browse more
See all JSON tools.