JSON Formatter & Validator Online
Format, beautify, validate, and minify JSON data instantly. Free online JSON formatter with adjustable indentation.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is widely used in web APIs, configuration files, and data storage.
How to use this JSON Formatter
Paste your JSON data into the input field and click "Format / Beautify" to prettify it with proper indentation. Use "Minify" to compress JSON by removing whitespace. The tool also validates your JSON and shows errors if the syntax is invalid.
FAQ
Is my data safe?
Yes. All processing happens directly in your browser. No data is sent to any server.
What JSON errors can this tool detect?
This tool detects syntax errors like missing brackets, incorrect commas, unquoted keys, and other invalid JSON structures.