The first digit assigned to all Visa cards is four, and the second through sixth numbers are connected to the financial institution. Then, either the seventh through 12th numbers, or the seventh through 15th, are the account number, while that final 13th or 16th digit is the check number.
Limited color, Lossy format, small file. 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.
JPG supports 16.7 million colors and is the preferred format for photographs. JPG files are also smaller in size as compared to other image formats because it uses âlossyâ compression to reduce the file size. It may not be evident to the human eye, but JPG images sacrifice some image information to keep file sizes small.