JSON Formatter

Format, validate, and minify JSON data. All processing happens in your browser.

Advertisement (728x90)

How to Use

  1. Paste JSON into the input field
  2. Click "Format" to pretty-print, or "Minify" to compress
  3. Use "Validate" to check for errors
  4. Copy the output when ready

Features

  • Client-side formatting for privacy
  • Validation with clear error messages
  • Pretty-print or minify in one click

JSON Standards Basics

JSON syntax is standardized in RFC 8259.

In practice, duplicate object keys can create interoperability problems.

Formatting vs Minifying

  • Format adds indentation and line breaks for readability and code review.
  • Minify removes unnecessary whitespace to reduce payload size.
  • Validation helps catch syntax errors before data is sent to APIs or stored.

References