How to use JSON Formatter on Toolbo
Format, minify, and validate JSON instantly in your browser — nothing is uploaded.
What is JSON Formatter?
This tool pretty-prints, minifies, and validates JSON. Everything runs locally in your browser — your data never leaves your device. Great for debugging API responses, checking config files, or preparing JSON before sending it elsewhere.
Step by step
Open JSON Formatter and paste JSON into the input area. Click Format for readable output or Minify for a single line. Syntax is checked as you type; errors show line and column. Use the Tree View tab to expand and collapse objects and arrays.
Key features
What makes working with JSON faster:
- Format / Pretty Print — 2, 4, or 6 space indentation
- Minify — strip whitespace to one line
- Live validation — errors with line and column
- Tree View — expand and collapse structures
When to use it
Use it when you receive JSON from an API and need readable output, before committing config files, or when you need compact JSON for query strings or logs.