In the world of computing, file extensions are used to distinguish different types of file. Knowing what type of file you're dealing with can help you determine how to open it or whether it is safe to do so. Here are some examples of common file extensions and how to use them.

.7z: This is an archived file, which means it is a compressed version of one or more files or folders to save space. You can use a program like WinZip or 7-Zip to open these files.

.jpg or .jpeg: These files are images. You'll most likely be able to open them with whatever default image viewers are installed on your computer, but you can also open them with photo editing software like Adobe Photoshop.

.pdf: PDFs are a type of document file. You can open these in several programs, but one of the most common is Adobe Acrobat. Google Chrome and other web browsers also typically have built-in PDF viewers.

.mp4: This is a video file. Again, what you use to open this depends on what's installed on your computer. You could use a general media player like VLC, or a dedicated video player like QuickTime.

650 File Important Information

If you come across a .650 file, this is typically associated with the software program Roxio Creator NXT Pro 7 developed by Roxio, and its commonly a type of disk image file. It is recommended to open it with the compatible software to prevent any potential issues.