Why are my iPhone photos HEIC files?
HEIC (High Efficiency Image Container) is the iPhone's default camera format since iOS 11 — it takes about half the space of JPG. You can switch the camera to JPG under Settings → Camera → Formats → Most Compatible, but converting existing photos here is quicker.
Does this work on Windows and Android?
Yes. Browsers that can't read HEIC themselves load a built-in decoder (about 1.3MB, once) and convert on your device. Nothing is uploaded.
Can I convert many HEIC photos at once?
Yes — select or drop a whole batch, tap Process all, and download them individually or as one ZIP.
Will I lose quality converting HEIC to JPG?
Very little at the default quality. JPG files will be somewhat larger than the HEIC originals; use Max file size mode if you need them under a specific limit.
Is the location data kept?
No — EXIF metadata, including GPS location, is removed when the photo is re-encoded, which is usually what you want before sharing.