In the Recognized File Types list, select JSON5. In the Settings/Preferences dialog ( Ctrl+Alt+S), go to Editor | File Types. Extend the JSON5 syntax to all JSON files P圜harm by default treats files with the json5 extension as JSON5 files and supports this new syntax in them. P圜harm recognizes a number of most popular JSON standards including JSON5. You can also use custom JSON Schemas to enable code completion in your JSON files and validate them. In popular types of configuration files, P圜harm provides code completion, thanks to the JSON Schema, which is a special format for describing the structure and contents of such files. P圜harm helps you work with JSON files - it checks their syntax and formatting. The JSON format is commonly used for storing data and for configuration files.