http://www.autozone.com/images/cds/jpg/small/0900823d8010b6d6.jpg here is the diagram from autozone http://www.autozone.com/images/cds/jpg/small/0900823d8010b6d6.jpg here is the diagram from autozone

* matches anything. *.jpg would mean any file with a .jpg extension. 1*.jpg would mean any file where the name begins with 1 and ends with a .jpg ? matches any single character. ?.jpg would match a.jpg, 1.jpg, or F.jpg but not a1.jpg. Several ? wildcards can be used so that ??.jpg would match any jpg file with a two letter name.

I think GIF can do small video type movements that JPG cannot.

This is the right format for those photo images which must be very small files; for example, for web sites or for email. The JPG file is wonderfully small, often compressed to perhaps only 1/10 of the size of the original data.

However, this fantastic compression efficiency comes with a high price. JPG uses lossy compression (lossy meaning "with losses to quality") .Lossy means that some image quality is lost when the JPG data is compressed and saved, and this quality can never be recovered.

You will use a JPEG or JPG when you have a picture and you save it to a file , Sometimes it may be too large & JPG will remove some of the information to keep the file size small and condensed (: Hope this helped

- Kayla