If you use an iPhone regularly, you've probably run into HEIC files. On the phone, everything works perfectly. But the moment you need to actually use those images somewhere else, things get awkward. Maybe: a website only accepts PDF someone can't open the HEIC image you need to send multiple photos as a single file or you're trying to upload documents captured on your phone I kept hitting this problem often enough that I decided to build a small tool around it. That's how HEICFlow started. Why HEIC Can Be Frustrating HEIC is Apple's modern image format. It has real advantages: better compression smaller files good image quality From a storage perspective, it's great. But compatibility still creates friction. Many workflows still prefer: PDF JPG PNG especially when images move beyond your phone. And in practice, most people aren't trying to "manage file formats." They're trying to complete a task. The Real-World HEIC Problem Here are some situations I kept seeing. 1.…