How to Reduce Image Size on iPhone
3 free methods. No apps to install.
iPhone photos are big. 12MP to 48MP, 5MB to 15MB each. Here are 3 ways to make them smaller.
Quickest: Method 3 — use the free tool below. Works in Safari.
Method 1: Change your camera settings
1Open Settings → Camera → Formats
2Select "High Efficiency" (HEIF/HEIC format)
New photos will be 40-50% smaller automatically.
Note: HEIC isn't supported everywhere. Convert to JPEG when sharing with non-Apple users.
Method 2: The Mail trick
1Select photo(s) → tap Share → Mail
2Choose "Small" or "Medium"
3Long-press the compressed photo → Save Image
4Close the email — don't send it
"Small" takes a 10MB photo down to about 500KB.
Method 3: Online compressor
Use a tool that runs in your browser. Your photos stay on your device.