We have some suggestions on the image size to use for each common area, you can refer to it to apply and make the composition more uniform.
- Logo: 50x50(px)
- Favicon: 30x30(px)
- Background images: 1920x500
- Banner images:1920x750(px)
- Horizontal featured images(4 columns/row): 300x230(px)
- Vertical featured images(4 columns/row): 300x350(px)
- News featured images: 870 × 500 (px)
- Avatar images: 100x100(px)
- Gallery images: 1280 × 600(px)
- Horizontal featured images(2 columns/row): 630 × 350 (px)
