Before fixing anything, let’s identify the usual suspects.

The top slowdowns

• Oversized images — by far the number one cause.
• No caching — the server rebuilds everything on every visit.
• Too many plugins — each one adds more code to load.
• Weak hosting — a slow server drags everything down.
• An overloaded theme — too many effects and scripts.

Good news: these causes can be fixed one by one, without writing code, in the modules that follow.