JSON Formatter

Format, minify, and validate JSON with clear error messages and syntax highlighting.

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When to Use This JSON Formatter

                
Our free JSON formatter tool helps developers and data professionals work with JSON data:

                
    
                    
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                        API Development
                        
    Format API responses for easier debugging and documentation. Validate JSON payloads before sending requests.
    
                    
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                        Configuration Files
                        
    Beautify and validate JSON configuration files for applications, ensuring proper syntax before deployment.
    
                    
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                        Data Analysis
                        
    Format large JSON datasets for better readability when analyzing data structures and contents.
    
                    
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                        Code Reviews
                        
    Quickly validate and format JSON snippets during code reviews to spot issues and improve readability.
    
                    
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                        Learning & Education
                        
    Understand JSON structure better by formatting and validating examples while learning web development.
    
                    
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Frequently Asked Questions

                

                    

                        
Is my JSON data private and secure?

                        
Yes, completely. All JSON processing happens locally in your browser. Your data is never sent to any server or stored anywhere except your own device.

                    

                    

                        
What JSON errors does this tool detect?

                        
Our validator detects syntax errors including missing commas, unquoted keys, trailing commas, mismatched brackets, and invalid escape sequences. Error messages include line numbers for easy debugging.

                    

                    

                        
Can I format large JSON files?

                        
Yes! The formatter handles large JSON files efficiently. For very large files, processing happens instantly in your browser without upload delays or size limits.

                    

                    

                        
What's the difference between format and minify?

                        
Format adds indentation and line breaks for human readability. Minify removes all whitespace to reduce file size, which is ideal for production environments and API responses.

                    

                    

                        
Does this tool support JSON5 or JSONC?

                        
This tool validates standard JSON (RFC 8259). It does not support JSON5 features like comments or trailing commas. Use strict JSON syntax for best results.