A slow page rarely announces itself as a problem. People just leave. They don't file a complaint; they close the tab, and the site never learns what it lost.
Performance is usually a pile of small decisions: oversized images, scripts nobody remembers adding, fonts loaded three times. None of them feels important alone, which is exactly why they accumulate.
Where to look first
- Images — right size, right format, loaded only when needed
- Third-party scripts — every one has a cost
- Fonts — fewer files, loaded once
Treat speed as part of the design, not a final pass. A fast site feels more trustworthy before a single word is read.