Developer toolsFree & private
Online JSON formatter and tree viewer
Beautify JSON, minify data, and explore a collapsible tree with syntax highlighting. Validate and copy JSON entirely in your browser.
JSON formatter Local processing
Syntax highlighting
Collapsible tree
Beautify & minify
How to Use
- 1
Paste your JSON into the editor.
- 2
Choose Beautify or Minify; invalid JSON shows an error.
- 3
Explore the tree or copy the formatted output.
Frequently Asked Questions
Is sensitive JSON safe here?
The formatter parses data locally and does not send it to a server.
Are large integers preserved?
JSON uses JavaScript numbers. Integers beyond Number.MAX_SAFE_INTEGER can lose precision. Store such identifiers as strings.
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