JSON Beautifier
Expand minified JSON into something a human can actually read.
Runs entirely in your browser — your data is never uploaded to any server.
How it works
- Paste minified JSONA single dense line is fine.
- Beautify itStructure is expanded and indented.
- Read or copyNow it is scannable.
What this tool does
- Compact inline arrays keep data shapes visible
- Configurable indentation
- Reports object, array and key counts
- Local processing only
Frequently Asked Questions
The formatter applies standard indentation everywhere. The beautifier also keeps short primitive arrays inline so numeric data stays compact.
Arrays containing only numbers, strings or booleans that fit comfortably within a line.
Yes. Whitespace placement never affects validity.
Yes, tab indentation is one of the options.
Privacy and security
Your input is processed by JavaScript running inside your browser. Nothing you paste is sent over the network, logged, or stored — which is what makes this safe to use with production data. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.
Related tools
View all tools →JSON FormatterTurn unreadable JSON into properly indented, readable structure.JSON MinifierStrip every unnecessary byte from your JSON.JSON ValidatorCheck whether your JSON is valid, and find out exactly why it is not.YAML FormatterFormat, validate and convert YAML.XML FormatterIndent and check XML documents.