How to Reduce Page Load Time
Page speed is a confirmed Google ranking factor and a major part of user experience. Research shows that 53% of mobile users abandon sites that take longer than 3 seconds to load. Every second of improvement can increase conversions by up to 7%.
Quick Wins (Do These First)
| Optimisation | Time Saved | Effort |
|---|---|---|
| Compress images | 1-5 seconds | Low |
| Add lazy loading to images | 0.5-3 seconds | Low |
| Add async/defer to scripts | 0.5-2 seconds | Low |
| Enable browser caching | 0.5-2 seconds (repeat visits) | Low |
| Enable GZIP/Brotli compression | 0.5-1 second | Low |
Image Optimisation
Images are typically the largest resources on a page. Key optimisations:
- Use WebP or AVIF format instead of JPEG/PNG
- Compress images to under 200KB each
- Resize to actual display dimensions (do not upload 4000px images that display at 800px)
- Add width and height attributes to prevent CLS
- Use
loading="lazy"on below-fold images
JavaScript and CSS
Every external file requires a network request. Reduce the number of CSS and JS files:
- Combine multiple CSS files into one
- Combine and minify JavaScript files
- Remove unused CSS and JavaScript
- Use
asyncordeferon all non-critical scripts - Inline critical CSS for above-the-fold content
Server-Side Optimisation
- Use a CDN — serves content from servers closer to the user
- Enable caching — browser caching, server caching, and CDN caching
- Upgrade hosting — cheap shared hosting is often the bottleneck
- Enable HTTP/2 — allows parallel loading of resources
Check your page's resource count and size with a free RankNibbler audit. The Core Web Vitals guide explains the specific metrics Google measures.
Check your site now: Run a free audit on the RankNibbler homepage to see how your page scores across 30+ SEO checks.
Last updated: March 2026