Ability to search sites which are missing:
- Retina @2x
- srcset
- alt text
- spammy alt text
- optimized images
- base64 for icons
- PNG/GIF/TIFF/OTHER images where it should be just JPG (gradient colors)
- JPG/GIF/TIFF/OTHER images where it should be just PNG (flat colors)
- Too large & heavy images
- Other fun stuff