Web Performance Best Practices: A Friendly Guide for 2025
Web performance is more important than ever. Here are the top tips to keep your site fast and users happy in 2025, using British spelling and best practices throughout.
1. Optimise Images
- Use modern formats like WebP and AVIF for smaller file sizes.
- Implement lazy loading for images and videos.
- Compress images without sacrificing quality.
- Use responsive images for different devices.
2. Minimise JavaScript
- Reduce bundle size and avoid unnecessary scripts.
- Split code with dynamic imports and tree-shaking.
- Defer non-critical scripts and prioritise essential functionality.
- Audit third-party scripts for performance impact.
3. Use CDN and Caching
- Deliver assets quickly and reliably with a Content Delivery Network (CDN).
- Set proper cache headers for static assets.
- Use service workers for offline support and faster repeat visits.
- Regularly purge and update cached content.
4. Improve Core Web Vitals
- Monitor metrics like Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS).
- Optimise server response times and reduce Time to First Byte (TTFB).
- Avoid layout shifts by reserving space for images and adverts.
- Test performance using tools like Lighthouse and WebPageTest.
5. Enhance Accessibility and UX
- Make navigation simple and intuitive.
- Use clear calls-to-action (CTAs).
- Ensure your site is accessible to all users, including those with disabilities.
- Reduce pop-ups and intrusive adverts.
6. Monitor, Measure, and Adapt
- Use analytics tools to track site speed and user engagement.
- Continuously test and refine your performance strategy.
- Stay updated with the latest web standards and browser features.
Final Thoughts
Web performance is a journey, not a destination. By focusing on optimisation, accessibility, and user experience, you’ll keep your site competitive and your visitors happy. Stay curious, keep learning, and remember: great performance starts with helping your audience!
Need more help? Reach out to the kreativekommit team for personalised web performance advice!