Format, beautify, minify, and validate JSON instantly.
JSON (JavaScript Object Notation) is a lightweight text format for data interchange. Keys must be double-quoted strings. Values can be strings, numbers, booleans, null, objects, or arrays.
1. Upload
Select or drag your file onto the upload area.
2. Process
Your file is processed instantly — nothing is stored.
3. Download
Download your result with one click. Done.
Private by default
Client-side tools never upload your files. Server-side tools delete them immediately after processing.
No account needed
Just upload and go. No email, no password, no account — ever.
Works on any device
Fully browser-based. Works on desktop, tablet, and mobile with nothing to install.
It parses your JSON and reformats it with consistent 2-space indentation and line breaks, making it easier to read. The Minify mode does the opposite — removes all whitespace to produce the most compact possible output.
Paste any JSON and instantly format it with proper indentation, minify it to a single line, or validate it and see the exact error location. Includes syntax highlighting — keys, strings, numbers, booleans, and null values are colour-coded for readability.