Slow websites feel mysterious to their owners — “we paid for a good design!” — but the diagnosis is almost boringly consistent. Ninety percent of slow sites we audit share the same five diseases, in roughly this order.

1. Obese images

The single biggest culprit everywhere: photos uploaded at camera resolution, five megabytes each, on pages showing them at a tenth the size. Modern formats (WebP/AVIF), correct dimensions and lazy loading routinely cut page weight by 70% — no design change visible, everything faster.

2. Plugin archaeology

Years of “just install a plugin for that” leaves sites carrying dozens — each adding scripts, styles and queries to every page load. The audit question is brutal and healthy: what does this plugin do, and did we notice when we stopped using it?

3. Hosting bought on price

Shared hosting at the cheapest tier means your site queues behind strangers’ sites on an overloaded machine. The jump to decent hosting costs less than one lost customer a month — and is often the single biggest speed win available for money.

4. Scripts that block the first paint

Chat widgets, trackers, font services, cookie tools — each loading before your content gets to appear. Deferring what can wait moves the moment your visitor sees something from “eventually” to “instantly”.

5. No caching layer

Without caching, every visit rebuilds the page from scratch. With it, most visitors get a pre-built copy in milliseconds. It’s configuration, not construction — hours, not weeks.

Speed is the least glamorous website investment with the most measurable return. Send us your URL for a speed diagnosis — we’ll name your diseases in plain language, free.

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