JSON Formatter & Validator
Format, validate and beautify raw JSON instantly in your browser.
What is a JSON Formatter & Validator?
JSON (JavaScript Object Notation) is the standard data exchange format on the web. However, raw API responses or minified logs are often hard for humans to read. A JSON Formatter takes dense, unformatted JSON and inserts correct indentation, spaces, and line breaks to make it highly legible.
How to Format and Validate JSON
- Paste your raw, unformatted JSON string into the input editor.
- Select your preferred indent spacing (e.g. 2 spaces, 4 spaces).
- Click Format / Beautify. If there are syntax errors, the parser will highlight the line and details.
- Copy or download your formatted result.
Fawru JSON Formatter Features
- Beautify and Indent: Configurable space sizes for custom styles.
- Inline Validation: Locates parse errors (like missing commas or unquoted keys) instantly.
- Compress & Minify: One-click minification to shrink data size.
- Privacy First: Run entirely in the browser. Your raw data is never sent to the network.
Frequently Asked Questions (FAQ)
Is my JSON data secure on Fawru?
Yes, absolutely. The formatter runs 100% inside your browser using standard JavaScript APIs. No server calls are made, meaning your sensitive configuration keys or client payloads remain completely private.
Why is my JSON invalid?
Common JSON syntax violations include trailing commas, unquoted property keys, single quotes instead of double quotes, or missing closing brackets. The validator will point out the exact syntax issue.