Its GIF not JIF
Come on people
Many one syllable G-words have a hard G, such as:
Gab. Gad. Gag. Gal. Gam. Gap. Gas. Gay. Get. Gig. Gill. Gimp. Gird. Girl. Give. Go. Goal. Gob. God. Gone. Gore. Got. Guide. Guild. Guilt. Gull. Gulp. Gum. Gun. Gust. Gut. Guy.
There is a file format called a .jpeg which is an image format.
However the file format of .gif stands for "Graphics Interchange Format"
If it were to be pronounced with a "J" sound the file would be a .jif and not a .gif
One argument that people use for the ".jif" pronunciation is that the creator of the Gif states that he pronounced it "jif" however, in counterargument to that, Oxford dictionary has done a survey which showed that "Gif" is the most used format and has stated that they recognize the "Gif" pronunciation.
Gif not Jif
Its a Gif not a Jif. Just like gif-T
If it were pronounced "jif" the word it stood for would have to be "jraphics" and not "graphics"
Jif v Gif
Jif is a peanut butter.