JSON Tools

JSON Clean

Clean and format JSON data. Remove comments, trailing commas, extra whitespace, and auto-fix common JSON syntax errors.

jsoncleanformat清理格式化

Input

Output

Cleaned JSON will appear here

What is JSON Clean?

JSON cleaner can help you clean and fix problematic JSON data. The tool automatically removes single-line comments (//) and multi-line comments (/* */), deletes trailing commas, cleans extra whitespace characters and empty lines, removes trailing spaces. For input with JavaScript object literal features (like unquoted key names), the tool also attempts to convert them to valid JSON. Cleaned JSON is formatted for output, easy to read and further process.

When to Use JSON Clean

Use when cleaning JSON with comments copied from code, fixing syntax errors caused by manual editing, extracting valid JSON from configuration files, or standardizing JSON format for parsing.

How to Use JSON Clean

Paste JSON or JSON-like data that needs cleaning into the input area. Click the "Clean" button, and the tool will automatically remove comments and extra whitespace, attempt to fix common syntax errors, and output formatted valid JSON.