Beautify and Debug JSON Data
Working with massive, unformatted blocks of JSON data returned from APIs is a nightmare. Our JSON Formatter & Beautifier instantly parses a single line of minified JSON and transforms it into a clean, indented, color-coded tree structure that humans can actually read.
More Than Just Indentation
Our tool is designed for developers debugging complex payloads. Features include:
- Collapsible Nodes: Click on brackets or braces to collapse huge arrays and objects, allowing you to focus only on the data structure you care about.
- Syntax Highlighting: Instantly distinguish between keys (red), strings (green), numbers (blue), and booleans via syntax coloring.
- Error Highlighting: If your JSON is invalid (e.g., a missing comma or an unescaped quote), the parser will highlight the exact line and character where the error occurred.
How to Use This Tool
- Upload or Input Data: Select your file or paste your data directly into the tool interface. Everything remains on your device.
- Configure & Process: Adjust any optional settings if necessary. The tool will process your data instantly inside your browser.
- Download Result: Preview the output and click the download or copy button to save your final results.
Frequently Asked Questions
Can I change the indentation size?
Yes, you can toggle between 2 spaces, 4 spaces, or tab indentation depending on your personal preference.
Does it fix invalid JSON?
Yes, the tool has an 'Auto-Fix' feature that attempts to repair common errors, such as wrapping unquoted keys in double quotes or removing trailing commas.
Is it safe to paste API keys here?
Yes! The formatter runs entirely client-side using JavaScript. No data is ever transmitted to a server.