Image-heavy and fast: building sites for architects

Architecture sites live and die by their photography. They also tend to be painfully slow. Here's our checklist.

• Serve modern formats at the exact size each screen needs
• Lazy-load everything below the fold
• Reserve space for every image to avoid layout shifts
• Keep JavaScript out of the critical path

A slow portfolio says the same thing as a cluttered one: we didn't sweat the details.