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.

The final day to file your taxes if you received an extension ahead of the original April 15 "Tax Day" deadline is just six ...

If you find yourself doing repetitive tasks in your browser, it may be time to try writing an extension for Chrome or Firefox—with just minimal coding knowledge required.

A tax extension can give you more time to complete your return. But you still need to make an estimated payment to the IRS on time.

You can file for a free tax extension in minutes if you can’t make the April 15 deadline. Here’s what taxpayers need to know.

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.

Learn how to file a tax extension with the IRS—but remember that you still need to pay your taxes by the standard deadline.

If you haven’t started your taxes, it’s not too late. Read our guide on the best and quickest ways to file and how you can ask for an extension.