Topic guide

Optimization

Reduce CSS, JavaScript, font, image and database overhead safely.

How to Remove Unused CSS in WordPress

Unused CSS increases stylesheet work. The safest approach is to reduce what is shipped, then use automated removal only with testing.

Delay non-essential JavaScript to reduce early main-thread work, but protect interactions and measurement scripts that need timely execution.

Lazy loading postpones non-critical media until it is closer to the viewport.

Database cleanup can reduce clutter, but it is not a substitute for diagnosing slow queries or inadequate hosting.

Fonts can delay text rendering, add network requests and cause layout shifts. Use fewer files and load only what the design actually needs.

Images are often the largest visible resources on WordPress pages. Optimize dimensions and compression before relying on lazy loading.

JavaScript optimization is a prioritization problem: ship less, execute less, and postpone work that is not needed for the initial experience.

CSS performance improves most reliably when you reduce what is generated, then optimize delivery of what remains.