You want it to be JPEG (.JPG) and NOT GIF.
The title or file name is made up by the person who created or edited the file. Look at the file in Windows Explorer. it will be XXXXXXXX.YYY where the chatacters on the left side of the period (X) are the file name and the 3 (sometimes 4) characters on the right side of the period (Y) represemt the file extension.
The file extension tells you the file format or type of an image.
If the file extension is one thing, and the
properties or details of the file are different... Well then, the person who named or edited the photos made an error when naming/editing the files.
Generally, if the file does not have the correct file extension, the file can not be opened.
The following info was taken from the
Wikipedia Website and
IS accurate.
JPEG/JFIF
JPEG (Joint Photographic Experts Group) is a compression method; JPEG-compressed images are usually stored in the
JFIF (JPEG File Interchange Format) file format. JPEG compression is (in most cases)
lossy compression. The JPEG/JFIF
filename extension in
DOS is
JPG (other
operating systems may use
JPEG). Nearly every digital camera can save images in the JPEG/JFIF format, which supports 8 bits per color (red, green, blue) for a 24-bit total, producing relatively small files. When not too great, the compression does not noticeably detract from the image's quality, but JPEG files suffer generational degradation when repeatedly edited and saved. Photographic images may be better stored in a lossless non-JPEG format if they will be re-edited, or if small "artifacts" (blemishes caused by the JPEG's compression algorithm) are unacceptable. The JPEG/JFIF format also is used as the image compression algorithm in many
Adobe PDF files.
GIF
GIF (Graphics Interchange Format) is limited to an 8-bit palette, or 256 colors. This makes the GIF format suitable for storing graphics with relatively few colors such as simple diagrams, shapes, logos and cartoon style images. The GIF format supports animation and is still widely used to provide image animation effects. It also uses a lossless compression that is more effective when large areas have a single color, and ineffective for detailed images or
dithered images.
In short, the GIF format is used for icons,avatars and other images where size and level of detail are not important. If they truly have been converted to GIF. That is bad. Go back to the people who did it and have it fixed.
The answer to your original question: Ask for a LOSSLESS (RAW) file format that you can edit and convert to JPEG on your own. Remember that you'll want the software you are using (Photoshop, Lightromm, Gimp, etc) to be compatible with the specific lossless format you decide on.