Website speed isn't just nice to have. It's essential. A slow site loses visitors, hurts your search rankings, and costs you money.
Next.js is changing how we build fast websites. But what exactly is it, and how does it make sites faster than traditional platforms like WordPress?
What Is Next.js?
Next.js is a modern web development framework built on React. Think of it as a smarter way to build websites that loads faster and performs better than traditional methods.
Unlike WordPress, which generates pages when visitors request them, Next.js can pre-build pages or generate them instantly. This flexibility is what makes it so fast.
How Next.js Delivers Speed
Pre-rendering Pages
Most websites, including WordPress sites, build pages when you visit them. The server scrambles to gather content, apply styling, and send everything to your browser.
Next.js can pre-render pages at build time. When someone visits your site, the page is already ready to go. No waiting around.
For a Cardiff restaurant, this means your menu loads instantly instead of making hungry customers wait while the server processes the request.
Smart Code Splitting
Traditional websites often load everything at once, even parts you don't need. Next.js automatically splits code into smaller chunks and only loads what's necessary for each page.
Visit the homepage? You get homepage code. Navigate to the contact page? Then it loads contact page code. This keeps initial load times lightning fast.
Automatic Image Optimisation
Images are usually the biggest speed killers on websites. Next.js automatically optimises images by:
- Serving the right format (WebP for modern browsers, JPEG for older ones)
- Resizing images based on device screen size
- Lazy loading images that aren't visible yet
A gym website with lots of photos benefits hugely from this automatic optimisation.
Built-in Performance Features
Next.js includes performance optimisations that would take hours to implement manually:
- Prefetching links you're likely to click
- Optimising fonts to prevent layout shift
- Minifying CSS and JavaScript automatically
- Generating efficient server responses
Next.js vs WordPress Speed
WordPress powers 43% of the web, but it wasn't built for modern performance standards. Here's how they compare:
WordPress:
- Generates pages on demand
- Relies on plugins for optimisation
- Can become slow with multiple plugins
- Requires caching plugins for decent speed
Next.js:
- Pre-renders pages for instant loading
- Built-in optimisation features
- Consistent performance regardless of complexity
- Fast by default, not by configuration
That doesn't mean WordPress is bad. For content-heavy sites or when you need extensive customisation options, WordPress remains excellent. But for pure speed, Next.js has the advantage.
Real-World Speed Benefits
Better Search Rankings
Google considers page speed a ranking factor. Faster sites appear higher in search results.
A Cardiff accountancy firm switched from WordPress to Next.js and saw their average page load time drop from 3.2 seconds to 0.8 seconds. Their search rankings improved within weeks.
Lower Bounce Rates
Visitors abandon slow sites quickly. Amazon found that every 100ms of delay costs them 1% in sales.
Fast Next.js sites keep visitors engaged longer, leading to more enquiries and sales.
Improved Mobile Experience
Mobile users expect instant loading. Next.js's automatic optimisations ensure your site performs well on slower mobile connections.
Better Core Web Vitals
Google's Core Web Vitals measure real user experience metrics. Next.js sites typically score higher on:
- Largest Contentful Paint (how quickly main content loads)
- First Input Delay (how quickly the site responds to interactions)
- Cumulative Layout Shift (how stable the page is while loading)
Technical Features That Matter to Business
Server-Side Rendering (SSR)
Next.js can generate pages on the server before sending them to browsers. This means:
- Faster initial page loads
- Better SEO (search engines see full content immediately)
- Improved social media sharing (proper preview images and descriptions)
Static Site Generation (SSG)
For content that doesn't change often, Next.js can pre-build everything as static files. These load incredibly fast because there's no server processing needed.
Perfect for solicitor websites where most content is relatively stable.
Incremental Static Regeneration (ISR)
This combines the best of static and dynamic. Pages are pre-built but can update automatically when content changes. You get static site speed with dynamic site flexibility.
Should You Switch to Next.js?
Next.js isn't right for every business. Here's when it makes sense:
Choose Next.js if:
- Speed is your top priority
- You want excellent mobile performance
- Your content doesn't change frequently
- You're building a business site with clear goals
Stick with WordPress if:
- You need extensive content management features
- Multiple people will be updating content regularly
- You want access to thousands of plugins
- Your team is already comfortable with WordPress
Budget considerations: Next.js development typically costs more upfront than WordPress because it requires custom development. However, you save on hosting costs and maintenance over time.
Use our website cost calculator to estimate costs for both approaches.
Next.js at Web Cardiff
We build Next.js sites for businesses that prioritise speed and performance. Our Next.js websites typically load in under one second and score 90+ on Google PageSpeed Insights.
Recent projects include:
- A Cardiff financial adviser whose site now loads 5x faster
- A Welsh restaurant chain with sub-second page loads across all locations
- A local estate agent whose mobile site speed improved by 400%
The Bottom Line
Website speed matters more than ever. Visitors expect instant loading, Google rewards fast sites, and slow sites literally cost you money.
Next.js delivers exceptional speed through smart pre-rendering, automatic optimisation, and modern development practices. While it's not right for every project, businesses prioritising performance should seriously consider it.
Want to know if Next.js is right for your business? Get in touch for an honest assessment. We'll recommend the best approach for your specific needs, whether that's Next.js, WordPress, or something else entirely.
Your visitors (and your bank account) will thank you for choosing speed.