Have you just downloaded a work PDF and suddenly found the file has the extension of a text file (TXT) or even no extension ...

Have you ever noticed how your computer knows which program to open when you double click on a file? It doesn’t always know but most of the time it does. When it doesn’t know, your ...

If you want to share a digital photograph, the odds are the file type that you want is a JPEG. But just because the JPEG is ...