I don't know about you, but I'm tired of the internet of the 2020s assaulting me with new, unwanted file formats. Who asked for webps to infiltrate our Google Image search results? I have no use for that trash! Until a somewhat recent update I couldn't even open them in Photoshop, a program that exists solely to open and modify images. I want to throw my monitor out the window every time I go to download an image and find out it's a webp, and I have a similar reaction whenever I come across a jfif. But here's a quick tip you may not know: you can just rename a jfif and get on with your life.
Here's all you need to know about jfif images: They're jpegs.
Well, basically. You can read the long, technical explanation of how the JPEG File Interchange Format works, but the short version is that JPEG is an image compression standard, and JFIF is a file format that uses that standard. Even that is probably more than you need to know about jfifs if your only experience with them is trying to save an image off the internet and going "ugh, what the hell is this thing?"
