JSON Formatter and Validator
Format, compress, and validate JSON. See the exact location of syntax errors and optionally sort object keys.
Local processingCode Formatter
About this tool
Paste a code sample and make it easier to read with consistent indentation and line breaks. Choose JavaScript, TypeScript, HTML, CSS, or JSON, then copy the formatted result.
Features
- Format JavaScript, TypeScript, HTML, CSS, and JSON
- Choose two-space or four-space indentation
- Format the selected language
- Show clear syntax errors for invalid JSON
- Copy the formatted code
How to use
- Choose the language: Select the language that matches the code.
- Paste the code: Enter or paste the code you want to format.
- Format and copy: Format the code and copy the result.
Examples
- Make compressed JSON easier to read
- Format an HTML email template
- Clean up CSS copied from a webpage
- Prepare a code sample for documentation
Limitations
- The tool uses lightweight formatting rules and does not replace a full development formatter
- Invalid code may be only partly formatted or may display an error
- The entered data is processed directly in your browser and is not sent to a server.
FAQ
- Is this a complete development formatter?
- No. It is intended for quick formatting of short code samples and does not include every rule or extension available in full development tools.
- Can it fix syntax errors?
- No. It formats generally valid code. JSON mode reports syntax errors.
- Which indent sizes are supported?
- Typically 2 or 4 spaces depending on the selected language.