You maniacs! You blew it up!!

I just discovered that somewhere between my old iPhone SE and my spiffy new iPhone 12 Mini, Apple decided to introduce a new image format that nobody ever asked for called High Efficiency Image Format (which of course is abbreviated HEIC in the new file extension because WTF?). I did not realize this until I attempted to copy some pictures I took this summer onto the new Digital Picture Frame I got Richard for Christmas, and the device did not recognize this incomprehensible new format. 

DAMN YOU APPLE!!!!   DAMN YOU ALL TO HELL!

I figured out how to turn this helpful feature off on my iPhone camera for future pictures, but what about the thousands of pictures I've already taken? Do I have to download some dubious looking utility from some sketchy Internet site to convert these pictures?