About JSON Formatter
JSON (JavaScript Object Notation) is the most widely used data interchange format in modern web development. Our JSON formatter helps you transform compact, hard-to-read JSON into nicely indented, human-readable format — and back again when you need to minimize payload size.
Features
- Format: Pretty-print JSON with 2-space, 4-space, or tab indentation
- Validate: Check if your JSON is syntactically valid with detailed error messages
- Minify: Remove all whitespace to create compact JSON for APIs and production
- Sort keys: Alphabetically sort all object keys for consistent output
Frequently Asked Questions
What's the difference between JSON format and JSON minify?
Formatting adds indentation and newlines to make JSON human-readable. Minifying removes all unnecessary whitespace to make the file as small as possible — ideal for production API responses and file transfers.
Why is my JSON invalid?
Common JSON errors include: using single quotes instead of double quotes, trailing commas after the last item, missing quotes around property names, and undefined or NaN values (which aren't valid in JSON).