About Pretty Printer
A fast, privacy-first developer tool for formatting, highlighting, and exploring JSON and XML data — entirely in your browser.
Instant Formatting
Paste any JSON or XML and get a beautifully indented, readable output in milliseconds.
Syntax Highlighting
Color-coded keys, strings, numbers, booleans, and tags make complex structures easy to scan.
Collapsible Tree View
Navigate large JSON payloads with an interactive collapsible tree — no more endless scrolling.
Minify Support
Compress formatted output back to a single line for use in APIs, configs, or scripts.
Private by Design
Everything runs in your browser. Your data never leaves your device.