JSON Formatter
Format, beautify, indent, and validate JSON code with 2 or 4 space indentation.
Format and beautify minified or messy JSON data into clean, readable code. Choose between 2-space or 4-space indentation, validate JSON syntax with real-time error detection, and copy formatted output in one click.
About JSON Formatter & Beautifier
Reading single-line minified JSON payloads from API responses or log files is nearly impossible without formatting. JSON Formatter restores clean hierarchical indentation, making debugging and data inspection effortless.
How to Use JSON Formatter & Beautifier
- Paste raw JSON: Paste unformatted or minified JSON into the input editor.
- Select indent style: Choose 2 spaces (standard web) or 4 spaces (backend standard).
- Automatic formatting: The JSON tree is formatted with proper indentation and nesting.
- Copy clean JSON: Copy the beautified JSON to your clipboard or download the file.
Key Features
- 2-space and 4-space indentation
- Real-time JSON syntax validation
- Detailed error line and position reporting
- Instant one-click clipboard copy
- 100% private client-side processing
Common Use Cases
- Beautifying minified API responses from REST and GraphQL endpoints.
- Validating configuration files (package.json, tsconfig.json, settings.json).
- Inspecting database export dumps and webhook test payloads.
Frequently Asked Questions
Does this formatter validate JSON syntax?
Yes! If the JSON contains syntax errors (such as trailing commas, single quotes, or missing brackets), an error indicator identifies the issue.
Is my JSON payload or API response sent to any server?
Never. All parsing and formatting happens 100% locally in your web browser. Sensitive API tokens and database records remain confidential.
Can this tool format large JSON files?
Yes, it comfortably formats JSON objects and arrays containing thousands of nodes in milliseconds.
Can I choose between tab indentation and spaces?
Yes, you can select standard 2-space, 4-space, or compact output based on your project and linting conventions.
Privacy Guarantee
100% private. Parsing runs via native JSON.parse() and JSON.stringify() inside your browser.
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