{} JSON Formatter

validator · syntax highlight · formatter

Paste raw or compressed JSON and get the indented, highlighted version, or compress formatted JSON to a single line. RFC 8259 validator and tree search included.

Indentation
Sort keys
Remove trailing comma
Escape unicode
Action
JSON input

Formatted JSON will appear here


                                        


                                        

                                            

                                                

                                                    
                                                    
The tree view will appear with valid JSON

                                                

                                            

                                        


                                        

                                            

                                                

                                                    
                                                    
JSON statistics will appear here

                                                

                                            

                                        


                                        

                                            

                                                

                                                    
                                                    
No error detected

                                                

                                            

                                        

                                    

                                

                            

                        

                    


                    

                        
JSON is the most widely used data exchange format in web development: REST API responses, exported ACF data, WordPress configurations and Figma design tokens are all in JSON. A reliable formatter that pinpoints syntax errors precisely is indispensable in the daily workflow.
This formatter:
  • Formats raw JSON with configurable indentation (2, 4 spaces, tab)
  • Validates JSON per RFC 8259 with precise line and character error indication
  • Minifies JSON by removing unnecessary whitespace to reduce request payload size
  • Displays JSON as an interactive navigable tree with expand/collapse for nodes
  • Search function within the tree for specific keys or values
  • Alphabetical key sorting
  • Conversion between JSON and YAML
  • Operates fully client-side: safe for JSON containing tokens, passwords or sensitive data