| ActionScript files ActionScript files | Ultimate Edition | |
| Active Server Pages files | Ultimate Edition | |
| Android files | Ultimate Edition: all Android-related file types; Community Edition: Android IDL files, Android renderscript files | |
| Apache Config files | Ultimate Edition | |
| Archive files | Ultimate Edition, Community Edition | |
| AspectJ files | Ultimate Edition, Community Edition | |
| C# files | Ultimate Edition, Community Edition | |
| C/C++ files | Ultimate Edition, Community Edition | |
| Command Shell files | Ultimate Edition | |
| CSS files | Ultimate Edition | |
| CoffeeScript files | Ultimate Edition | |
| Cucumber feature files | Ultimate Edition | |
| ColdFusion files | Ultimate Edition | |
| Eclipse project files | Ultimate Edition, Community Edition | |
| Dart files | Ultimate Edition, Community Edition | |
| Diagram files | Ultimate Edition | |
| Drools files | Ultimate Edition | |
| Erlang files | Ultimate Edition, Community Edition | |
| EJB QL files | Ultimate Edition, Community Edition | |
| Files marked as plain text | Ultimate Edition, Community Edition | |
| Files opened in associated applications | Ultimate Edition, Community Edition | |
| FreeMarker template files | Ultimate Edition | |
| Gant scripts | Ultimate Edition | |
| Gradle scripts | Ultimate Edition | |
| Groovy files | Ultimate Edition, Community Edition | |
| Groovy Server Pages | Ultimate Edition | |
| GUI Form | Ultimate Edition, Community Edition | |
| Handlebars files | Ultimate Edition | |
| HAML files | Ultimate Edition | |
| HTML files | Ultimate Edition, Community Edition | |
| IntelliJ IDEA project, module or workspace files. | Ultimate Edition, Community Edition | |
| IDL files | Ultimate Edition, Community Edition | |
| Image files | Ultimate Edition, Community Edition | |
| Java class files | Ultimate Edition, Community Edition | |
| Java source files | Ultimate Edition, Community Edition | |
| JavaFX files | Ultimate Edition, Community Edition | |
| JavaScript files | Ultimate Edition | |
| JavaScript test files | Ultimate Edition | |
| JavaScript files that can be executed on Node.js | Ultimate Edition | |
| Jade files (refer to the section Using Pug (Jade) Template Engine). | Ultimate Edition | |
| JSF files | Ultimate Edition, Community Edition | |
| JSHint configuration files | Ultimate Edition | |
| JSON files | Ultimate Edition | |
| JSTestDriver Config files | Ultimate Edition | |
| Java Server Pages files | Ultimate Edition, Community Edition | |
| JSPx files | Ultimate Edition, Community Edition | |
| Kotlin files | Ultimate Edition, Community Edition | |
| Kotlin classes | Ultimate Edition, Community Edition | |
| Kotlin interfaces | Ultimate Edition, Community Edition | |
| Kotlin enums | Ultimate Edition, Community Edition | |
| Kotlin objects | Ultimate Edition, Community Edition | |
| Less files | Ultimate Edition | |
| Patch files | Ultimate Edition, Community Edition | |
| Perl files | Ultimate Edition, Community Edition | |
| PHP files | Ultimate Edition, Community Edition | |
| Properties files | Ultimate Edition, Community Edition | |
| Resource bundles | Ultimate Edition, Community Edition | |
| XML-based properties files | Ultimate Edition, Community Edition | |
| Pug files (refer to the section Using Pug (Jade) Template Engine). | Ultimate Edition | |
| Regular expressions | Ultimate Edition, Community Edition | |
| RELAX NG Compact Syntax | Ultimate Edition, Community Edition | |
| Sass files | Ultimate Edition | |
| SCSS files | Ultimate Edition | |
| Scala files | Ultimate Edition | |
| Smarty, Smarty config files | Ultimate Edition | |
| SQL files | Ultimate Edition, Community Edition | |
| Stylus files | Ultimate Edition | |
| Drools Expert files | Ultimate Edition | |
| Text files | Ultimate Edition, Community Edition | |
| TypeScript files | Ultimate Edition | |
| Velocity template files | Ultimate Edition | |
| XHTML files | Ultimate Edition, Community Edition | |
| XML DTD files | Ultimate Edition, Community Edition | |
| XML files | Ultimate Edition, Community Edition | |
| YAML files | Ultimate Edition |