Resize the image to smaller dimensions
Crop unnecessary parts
Save as JPEG for photos
Lower the JPEG quality setting
Use PNG only when transparency is needed
Convert PNG to JPEG if transparency is not needed
Use WebP or AVIF for better compression
Remove metadata such as EXIF data
Reduce color depth if possible
Use image compression tools before saving
Avoid saving multiple times in lossy formats
Choose the smallest acceptable file format for the use case