It's Pronounced GIF
Or JIF. The creator said JIF. The creator is wrong. Everyone is wrong.
The Facts
GIF stands for Graphics Interchange Format. The format was created by Steve Wilhite at CompuServe in 1987. In 2013, Wilhite accepted a Webby Award and used the platform to definitively state that it is pronounced "JIF," like the peanut butter, and that it always has been. The internet responded by explaining to the man who invented the format that he was pronouncing his own invention incorrectly.
This is a nearly perfect encapsulation of how technical debates work.
The Case for JIF
The creator says JIF. The G is a soft G. "Gift" is the counterexample usually raised here, and the JIF camp's response is that the G in GIF does not follow the same rule as the G in "gift" because the G stands for "graphics" and "graphics" has a hard G, but that doesn't mean the acronym inherits the pronunciation, similar to how "laser" doesn't rhyme with "laboratory." This is a reasonable linguistic argument. It is also the kind of argument that wins nothing and convinces nobody.
The Case for GIF (Hard G)
The G stands for "Graphics." Graphics has a hard G. The obvious pronunciation of the letter G in the absence of other information is the hard G. Acronyms are typically pronounced by the rules of their constituent letters or by treating them as words where the letters suggest a natural pronunciation. "GIF" looks like a word with a hard G. "JIF" looks like a brand of peanut butter. English speakers encountering the word for the first time will say "GIF" approximately 100% of the time. Language is descriptive, not prescriptive. The creator's intention is interesting but not binding.
This is also a reasonable argument. It also wins nothing and convinces nobody.
"The Oxford English Dictionary accepts both pronunciations. They added GIF to the dictionary in 2012. They noted the disputed pronunciation. The dispute continues."
— The internet, refusing to let this go
What This Is Actually About
The GIF debate is not about GIF. It is a proxy for every technical debate that has no correct answer but attracts enormous energy because it is low-stakes enough to argue about indefinitely. Nobody's production system goes down because someone said "jif." No postmortem has ever cited GIF pronunciation as a contributing factor. The stakes are zero, which means the argument is pure — you can be completely wrong and face no consequences, which makes it ideal for people who like to be right.
This is the same energy that drives the tabs vs. spaces debate, the vim vs. emacs debate, the "is a hotdog a sandwich" debate. The answer doesn't matter. The arguing does. The arguing is free entertainment that does not require shipping anything. Technical communities are full of people who are very good at systems thinking and very willing to apply that skill to questions that have no systems consequences whatsoever.
The Actual Resolution
Say whatever you want. People will know what you mean. The file will render correctly regardless of what sound you make when you describe it. If someone corrects your pronunciation, note that they have chosen to spend mental energy on this, consider what that tells you about their priorities, and move on.
Steve Wilhite died in 2022. The debate continues. It will continue after all of us are gone, in whatever format people are using to send each other short looping animations in 2087, whatever they call it then.