HEIC is Apple's default photo format — smaller than JPG but not widely supported outside Apple devices. Converting to JPG makes your iPhone photos compatible with Windows, Android, websites, and any app that works with standard images.
Questions
Why can't I open HEIC files on Windows?
HEIC is Apple's proprietary format. Windows doesn't natively support it — converting to JPG solves this instantly.
Will photo quality be affected?
Minimal. JPG compression is applied but output quality is set to high by default.
Does it work with .heif files too?
Yes — HEIF and HEIC are the same format with different extensions.