Standard images keep less than 300–500 KB for fast loading

Hero images up to 1 MB max is acceptable for high-quality visuals.

Avoid oversized uploads (e.g., 5000 px-wide image when it displays at 800 px only slows the site down)

Hero images should be about 1920 × 1080 px or wider (to fill large screens cleanly)

Feature images / content blocks about 1200 × 800 px (good for mid-page visuals).

Photographs: .jpg or .jpeg (smaller file size, good for gradients and photos).

Logos or graphics with transparency: .png (supports transparent backgrounds).

Keep your logo under 150 KB so it loads quickly without losing visual quality.

Aim for a width between 200-400 pixels for most website headers so the logo stays clear without dominating the layout.

Maintain a consistent aspect ratio so the logo doesn't stretch or warp across different devices or layouts.

Export the logo in .svg format when possible, since it stays sharp at any size and usually has a much smaller file size than .png or .jpg.

If SVG isn’t an option, use PNG for transparent backgrounds and higher quality, and JPG only if you need a smaller file and don’t require transparency.

Keep your favicon tiny; aim for 5 KB or less so it loads instantly in the browser.

Use 32x32 pixels or 48x48 pixels for the main favicon so it looks clean in most browsers.

Use .ICO for the main favicon since it is supported by all browsers.

If a .ICO format is unavailable, a .png version will suffice.

Use clear headings and short sections so users can scan easily.

Keep navigation simple so visitors can find what they need fast.

Use one style for spacing, fonts, and buttons so the site feels unified.

Stick to a limited color palette to keep the design clean and modern.

Keep the header height small so it does not take up too much space at the top of the page.

Keep spacing and alignment consistent so the header feels balanced and tidy.

Make the logo clear and sized appropriately so it is easy to recognize.

Add contact details or a clear way to reach you.

Include only essential links like policies, copyright, and social icons.

Maintain consistent spacing and alignment so the footer feels structured.

Make sure text stays readable by using enough contrast and avoiding tiny font sizes.