JSON repairer
Automatically repair and fix malformed JSON data. Corrects common JSON syntax errors like missing quotes, trailing commas, unescaped characters, concatenated strings, comments, and more. Instantly validates and formats broken JSON into valid, properly structured output.
This tool processes all data locally on your device.
Input
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Output
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Readme
Tool description
JSON Repairer is a powerful online tool that serves as both a JSON checker and fixer, designed to automatically repair malformed, broken, or invalid JSON data. Whether you need to fix JSON formatting online or repair a JSON file with missing quotes, trailing commas, unquoted keys, or other common syntax errors, this tool intelligently validates and repairs your JSON structure, restoring it to proper formatting instantly.
Features
- Automatic JSON Repair: Intelligently fixes common JSON syntax errors and structural issues
- Error Detection: Identifies and highlights problems in malformed JSON data
- Smart Correction: Handles missing quotes, trailing commas, unquoted property names, and more
- Format Control: Option to format the repaired JSON with proper indentation for better readability
- Real-time Processing: Instant repair and validation as you input or paste JSON data
- Syntax Highlighting: Clear visual representation of both input and repaired JSON
- Error Messages: Detailed feedback when JSON cannot be repaired
Use Cases
- Development & Debugging: Quickly fix JSON online during API development and testing
- Data Recovery: Repair corrupted JSON files from logs, databases, or file transfers
- API Response Fixing: Use this JSON checker and fixer to correct malformed API responses
- Configuration Files: Restore broken JSON configuration files to working state
- Copy-Paste Errors: Fix JSON formatting online after damage during copying from documentation
- Legacy Data Migration: Repair old or non-standard JSON data for modern applications
- Log File Processing: Extract and repair JSON file fragments from application logs
- Third-Party Integration: Handle improperly formatted JSON from external sources with this online JSON fixer
Common JSON Issues Fixed
- Missing or incorrect quotation marks around strings
- Unquoted object keys and property names
- Trailing commas in objects and arrays
- Missing commas between elements
- Single quotes instead of double quotes
- JavaScript-style comments (// and /* */)
- Missing closing brackets or braces
- Concatenated strings without proper operators
- NaN, Infinity, and undefined values
- Hexadecimal numbers and other non-standard formats
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Disclaimer
The tools provided on this website are designed to assist users in solving various problems. While we strive to ensure that the tools are accurate and effective, we do not guarantee or warrant that the output of any tool will be 100% accurate or error-free. The results generated by these tools are provided as-is and should be used with caution. We recommend that users verify any important information or results with additional resources or professional advice, as we cannot be held responsible for any consequences arising from the use of these tools. By using this website, you agree to assume all risks associated with the accuracy and use of the results provided.
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