Learn how to create folders by file extensions on Windows 11/10. You can sort files by extensions or formats using this guide.

Managing files on an iPhone has become significantly easier with recent updates to iOS, particularly with the introduction of the ability to change file extensions directly within the Files app ...

Using your favorite text or code editor, create a file in that folder called macworld.css. Once the file’s in place, switch back to Safari and the Extension Builder window.

Learn how to rename all file extensions in a folder & sub-folders at once on Windows 11/10. You can batch rename or rename all file extensions in bulk using this guide.

Note: When you create a new Chrome extension, you normally need to provide several types of files, depending on how complex it is.

Make your changes, save it, and to make sure you didn’t break anything, go back to chrome://extensions/ and click the refresh button under your extension.