Why your iPhone saves photos that won't open just anywhere
Since iOS 11, the iPhone saves photos as HEIC by default — a more efficient format than JPG that takes up less space at similar quality. The catch is compatibility: many apps, most websites, and a lot of Windows PCs can't open a HEIC file directly, so the photo shows up as a broken icon or a file that "can't be opened."
SMALLIMG decodes the HEIC file right in your browser — not on a server — and converts it into a regular JPG that any program understands. It takes a few seconds, and the original file never leaves your device.