What is the JSON Formatter & Validator?
The online JSON Formatter is a free developer tool designed to parse, format, validate, and beautify messy or minified JSON data. It instantly catches syntax errors and makes your JSON payload readable for humans.
Why use a JSON Formatter?
JSON (JavaScript Object Notation) is the standard data format used for API responses and configuration files across modern web development. Often, APIs return \"minified\" JSON—a massive wall of text with no spaces—to save bandwidth. While efficient for computers, it is impossible for developers to debug. This tool restructures that wall of text into a clean, hierarchical format.
JSON Validation
A missing comma or an unescaped quote can completely break an application. This tool uses strict JSON parsing rules to validate your input. If the input is not perfectly formatted according to the JSON specification, it will catch the error before you deploy it to production.
How to use this tool
- Paste your raw or minified JSON string into the \"Input JSON\" area.
- Click the \"Format\" button to beautify the code with proper indentation (2 spaces).
- Click the \"Minify\" button to compress the JSON by removing all whitespace and newlines.
- If there is a syntax error in your JSON, a red alert will appear showing exactly what the parser failed to understand.