JSON Formatter
Format, beautify, and minify unformatted JSON data with custom indentation, syntax verification, and one-click copy.
How to Use JSON Formatter
- Paste Raw JSON: Paste your minified or unformatted JSON text into the left input pane, or click 'Open File' to load a .json file.
- Choose Indentation: Select your preferred spacing format (2 Spaces, 4 Spaces, Tabs, or Minify compact mode).
- Click Format JSON: Click 'Format JSON' (or press Ctrl+Enter) to beautify the structure and validate syntax.
- Copy or Download: Click 'Copy' to copy the formatted code to clipboard or 'Download' to save as a .json file.
Frequently Asked Questions
Is my proprietary JSON payload kept private?
Yes, 100%. Formatting occurs entirely in your client browser using JavaScript's native JSON parser. Data never crosses the network.
What indentation styles are supported?
You can choose between 2 Spaces (standard for web APIs), 4 Spaces (common in backend systems), Tabs, or Minify (single-line compact string).
How large of a JSON payload can I format?
Because processing runs in client memory, you can easily format documents containing tens of thousands of lines (up to 25 MB).
What happens if my JSON has syntax errors?
If your payload contains invalid syntax (such as trailing commas, single quotes, or missing brackets), an error alert highlights the exact parsing fault.
Can I format JSON directly from a file?
Yes, click 'Open File' or drag and drop any .json or .txt file directly into the input workspace.
Are there keyboard shortcuts?
Yes, you can press Ctrl+Enter (or Cmd+Enter on macOS) inside the input textarea to trigger instant formatting.