What is page speed optimization?

Page speed optimization is the process of improving a website’s loading speed and responsiveness so that pages become usable faster and interactions feel smoother. It is important for UX, CRO, SEO, and overall website performance.

Key techniques for page speed optimization:

1. Optimize images – Compress images and use modern formats such as WebP or AVIF where appropriate.
2. Reduce unnecessary JavaScript – Remove unused scripts and limit third-party code.
3. Minify CSS and JavaScript – Reduce unnecessary characters and file size.
4. Use browser caching – Store reusable resources so returning visitors don’t need to download everything again.
5. Optimize fonts – Limit font files and weights and load them efficiently.
6. Use lazy loading – Load images and other non-critical content when they are needed.
7. Improve server response time – Optimize hosting, backend processing, and database operations.
8. Use a CDN – Deliver static resources from servers closer to visitors.
9. Reduce redirects – Avoid unnecessary redirect chains that add loading delays.
10. Monitor Core Web Vitals – Track metrics such as LCP, INP, and CLS to identify performance problems.

Example

For a Shopify store, page speed optimization could involve compressing product images, removing unnecessary apps or app scripts, reducing third-party tracking code, optimizing theme code, and minimizing heavy animations.

In simple terms: Page speed optimization makes a website load and respond faster, reducing friction and improving the chances that visitors stay and convert.