Open the photo in an image editor or built-in photo app
Use the resize or image size option
Reduce the width and height
Keep the aspect ratio locked
Save the photo as a compressed format such as JPEG
Lower the image quality if needed
Crop unnecessary parts of the photo
Remove metadata if the app allows it
Use online image compression tools
Export a copy instead of overwriting the original
Check the file size after saving
Repeat with smaller dimensions or lower quality if needed