How to Speed Up Your WordPress Site

WordPress sites accumulate performance debt over time. Common culprits include:

Unoptimised images — large image files are the single biggest drag on load time for most sites. Too many plugins — each plugin adds code that must be loaded on every page. No caching — without caching, your server rebuilds every page from scratch on every visit. Render-blocking scripts — JavaScript and CSS files that load before the page can display. Cheap hosting — shared hosting with inadequate resources creates bottlenecks under any traffic.

The quickest way to dramatically improve WordPress performance is a dedicated performance plugin. NitroPack is the most comprehensive option — it handles caching, image optimisation, CSS and JavaScript minification, lazy loading, and CDN delivery automatically.

After installation, most sites see Core Web Vitals scores jump significantly with minimal configuration. NitroPack's cloud-based approach means heavy optimisation work happens on their servers, not yours.

Images typically account for 60-80% of a page's total file size. Before serving any image:

1. Compress it — use tools like Squoosh or ShortPixel to reduce file size without visible quality loss. 2. Use modern formats — WebP images are 25-35% smaller than JPEG at the same quality. 3. Implement lazy loading — only load images when they're about to enter the viewport.

NitroPack handles all of this automatically, converting images to WebP and implementing lazy loading without any manual work.

Caching stores pre-built versions of your pages so your server doesn't have to rebuild them from the database on every visit. For most WordPress sites, enabling page caching alone can reduce load time by 50% or more.

Browser caching tells visitors' browsers to store static files locally, reducing load time on repeat visits. CDN caching serves your content from servers geographically close to each visitor.

Google's Core Web Vitals are the specific performance metrics that affect SEO rankings:

LCP (Largest Contentful Paint) — how fast the main content loads. Target: under 2.5 seconds. FID/INP (Interaction to Next Paint) — how responsive the page is to user input. Target: under 200ms. CLS (Cumulative Layout Shift) — how much the layout shifts during loading. Target: under 0.1.

NitroPack is specifically designed to hit green scores on all three metrics.

The fastest path to a faster WordPress site:

1. Install NitroPack and let it auto-configure your site 2. Run a PageSpeed Insights test before and after to measure the improvement 3. Optimise your hosting if scores are still low after caching is enabled

For most WordPress sites, NitroPack alone will move the needle from poor to good on Core Web Vitals without any further configuration.