A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows ...

Not sure what an AI file is or how to open one? We explain why designers use this format, where it comes from, and the best ...

Microsoft created a format called Rich Text Format (.rtf) so Word files can be opened on any platform. Here's what you need to know about it.

If you've encountered a CSV file and you're unsure what they're for, the good news is they're pretty straightforward and easy-to-use with apps you already know.

Video files, which are what we’re talking about here, are defined by both their file format (which usually also determines the file extension) and the file codec: These are separate, but often ...

Apple has replaced the JPEG image format with the new HEIC alternative in iOS. So what is HEIC, what is HEIF, and how will they benefit iPhone users?

If you see .FH file on your Windows 11/10 PC and wondering what it might be, this guide has the details to know about it and how to deal with it.

AVIF images may not be something you run across often, but they are gaining in popularity. Here's why, and how to convert one if you need to.