Website speed is critical to the user experience, to SEO rankings and to business performance. A fast site gives visitors a pleasant experience and encourages them to stay and explore. A slow site, by contrast, can make users leave before they even see what you have to offer. 

Site speed matters to Google too

Google treats site speed as a key ranking factor. Fast sites rank higher in the search results. Google's Core Web Vitals tools measure how fast and how smooth your site is. A fast site is a real asset to your  SEO.  

How site speed affects your business

A fast site doesn't only improve user satisfaction, it also: 

  • Reduces your bounce rate: fewer people leave the site quickly.
  • Increases conversions: visitors are more likely to make purchases, sign up, or take other actions on the site.

In this guide we share 10 proven methods for improving your site's speed. 

1. Understanding website speed 

Website speed refers to how long a site takes to load when a user arrives. That includes the time it takes for images, text and buttons to appear in full. A slow site can frustrate users, while a fast one keeps them satisfied. 

What is website speed?

Website speed is measured with tools such as: 

  • Page Load Time - (Page Load Time) how long a page takes to load fully.
  • Time to First Byte -(Time to First Byte - TTFB) how long the browser waits to receive the first data from the server.

Recommended tools for measuring speed: 

  • Google PageSpeed Insights - a free tool from Google.
  • GTmetrix - provides detailed data on site performance.
  • Lighthouse - measures speed and gives tips for improvement.

Why does site speed matter?

  • A better user experience - people don't like waiting. A fast site keeps them around longer.
  • Higher SEO rankings - Google gives priority to fast sites in the search results.
  • More mobile users - many people browse on smartphones. Slow sites don't perform well on mobile.
  • Increased sales - fast sites make it easier for visitors to buy or sign up.

When your site is fast, everyone benefits — users, search engines and your business. 

2. Core Web Vitals and improving site speed  

What are Core Web Vitals?

The core metrics focus on three main aspects: 

  • Largest Contentful Paint (LCP) - the load time of the main element on the page, such as a large image or block of text. A good result is under 2.5 seconds.
  • First Input Delay (FID) - how long the site takes to respond to a user action, such as a click or a keystroke. A good result is under 100 milliseconds.
  • Cumulative Layout Shift (CLS) - a measure of how much elements on the page move while it loads. A good result is below 0.1.

Why do Core Web Vitals matter?

  • A better user experience - visitors enjoy fast, smooth sites.
  • Higher SEO rankings - Google uses these metrics to rank pages. Good results improve your site's chances of appearing at the top of the results.
  • Good mobile performance - mobile users expect fast, stable sites, and these metrics help ensure that.

How do you improve your Core Web Vitals?

  • LCP - compress images, use fast servers and remove slow elements.
  • FID - reduce your use of JavaScript and enable browser caching.
  • CLS - set size attributes on images and videos, and avoid pop-ups that shift content.

By focusing on these metrics your site will load faster, run more smoothly and keep visitors satisfied and engaged. 

3. Optimising your hosting to improve site speed 

Your site's hosting provider directly affects its speed. Quality hosting ensures the site loads quickly, while weak hosting can slow it down even if the site itself is well optimised. 

Why does hosting matter?

Hosting is like a home for your site. If the server is slow, your site will be slow too. A fast, reliable hosting service ensures data reaches users quickly. 

Types of hosting

  • Shared hosting - (Shared Hosting)
  • The cheapest option, but you share resources with other sites.
  • Suited to small sites, but it can slow down as traffic grows.
  • Virtual private server - (VPS)
  • Better performance than shared hosting.
  • Dedicated resources make for a faster site.
  • Dedicated hosting - (Dedicated Hosting)
  • A private server with all its resources devoted to your site.
  • Suited to large or high-traffic sites.
  • Cloud hosting - (Cloud Hosting)
  • Flexible and reliable.
  • Suited to growing sites with variable traffic.

How do you choose the right hosting provider?

  • Look for hosting with SSD or NVMe storage, which is faster than conventional hard drives.
  • Check there is a 99.9% uptime guarantee, so your site is always available.
  • Choose providers with data centres close to your users, to ensure faster load times.

Recommended hosting providers 

  • SiteGround - known for speed and excellent support.
  • Bluehost - suited to beginners and small businesses.
  • Cloudflare - improves speed and security with a global network.

Choosing the right hosting provider is a simple way to improve site speed and upgrade the user experience. Investing in quality hosting is a sound step for your site's future. 

4. Optimising images to improve site speed 

Images are a significant part of most sites, but if they are too large they can slow down loading times. Optimising images improves site speed while preserving their quality. 

Why does image optimisation matter?

Large or unoptimised images take up a lot of space, which lengthens the page's load time. Images optimised for fast loading: 

  • Improve the user experience.
  • Contribute to better search engine rankings (SEO).

How to optimise images

  • Compress images - use tools such as TinyPNG or ImageOptim to reduce image file sizes without harming their quality.
  • Use modern formats - formats such as WebP are smaller and faster than older ones such as JPEG or PNG.
  • Resize your images - don't upload images larger than you need. For example, there is no point uploading a 3000px-wide image if it is only needed for a 500px-wide section.
  • Enable lazy loading - (Lazy Loading) images load only when the user scrolls to their position on the page. This saves bandwidth and speeds up the initial load.

Rules of thumb for image optimisation 

  • Name your files properly — "website-speed-tips.jpg", for example — to improve your SEO.
  • Use alt text on every image. It helps search engines understand the image's content and improves accessibility.
  • Check how your site's images perform using tools such as PageSpeed Insights.

5. Reducing  HTTP requests 

When a visitor opens your site, the browser sends requests to the server for files such as images, scripts or stylesheets. These are called  HTTP requests. The more requests there are, the longer the load time. 

Why does reducing HTTP requests matter?

A high number of HTTP requests slows the site down. Reducing them shortens load times, improves the user experience and contributes to higher SEO rankings. 

How to reduce HTTP requests

  • Combine files - merge multiple CSS or JavaScript files into one. This reduces the number of requests the browser sends.
  • Use inline CSS for critical styles - add important CSS directly to the HTML for faster rendering.
  • Remove unnecessary plugins and features: some plugins add extra scripts and files. If you don't need them, remove or replace them.
  • Use browser caching -(Browser Caching) store static files such as images, CSS or JavaScript in the visitor's browser, so they don't need to load again on the next visit.
  • Reduce third-party requests - limit scripts from external sources, such as social media widgets or analytics tools, that weigh the site down.

Rules of thumb for reducing HTTP requests

  • Minify your files - remove spaces, comments and unnecessary characters from your code to make it smaller and speed up loading.
  • Optimise fonts - use a small number of styles and weights to reduce requests.
  • Audit your site periodically - use tools such as GTmetrix or Google PageSpeed Insights to identify and improve slow elements.

Reducing HTTP requests is an important step towards a faster site and a better user experience. 

6. Using browser caching and content delivery networks (CDNs) 

Browser caching and CDNs  are powerful tools for speeding up site loading. They improve performance, especially for visitors located far from your server. 

What is browser caching?

Browser caching stores files such as images, CSS and JavaScript  on the visitor's device. On a return visit the browser doesn't need to download everything from the server again, which saves time and improves speed. 

What is a content delivery network (CDN)?

A Content Delivery Network is a group of servers located around the world. When a user visits your site, the CDN serves the files from the server closest to them, reducing load time. 

How to use browser caching 

  • Set expiry times for files - define how long the browser keeps files (a week or a month, for example).
  • Use the (for Apache servers) - .htaccess file add caching rules to it to enable caching for specific files.
  • Install a caching plugin - WordPress users can use plugins such as W3 Total Cache or WP Rocket for quick setup.

How to use a CDN 

  • Choose a CDN provider — popular options include Cloudflare, Akamai and Amazon CloudFront.
  • Integrate the CDN with your site - follow your CDN provider's instructions to connect the site. Most CDNs work with CMS platforms such as WordPress.
  • Monitor your CDN's performance use tools to confirm the CDN is serving files quickly and without errors.

The benefits of browser caching and a CDN 

  • Faster load times for returning visitors.
  • Better performance for a global audience.
  • Reduced load on your main server.

7. Optimising CSS, JavaScript and HTML 

Your site's code — CSS, JavaScript and HTML — directly affects loading speed. Large or messy code can slow the site down. Optimising it can improve performance significantly. 

Why does code optimisation matter?

The browser has to download, read and execute your site's code before showing it to users. The cleaner and smaller the code, the faster the browser can work, which improves the user experience and helps the site in the search results. 

How to optimise your code 

  • Minify your CSS, JavaScript and HTML: remove spaces, unnecessary lines and comments from the code. Tools such as Minify Code or plugins such as Autoptimize will do it easily.
  • Load JavaScript asynchronously: asynchronous loading lets scripts load alongside other elements rather than one after another. This speeds up rendering.
  • Defer non-critical scripts: delay loading scripts that aren't needed immediately, such as analytics or tracking code.
  • Remove render-blocking resources - make sure essential resources load first. Use tools such as Google PageSpeed Insights to identify and resolve problems.
  • Combine files - merge multiple CSS or JavaScript files into one to reduce the number of HTTP requests.

Rules of thumb for clean code 

  • Use lightweight libraries or frameworks only where you need them.
  • Remove unused CSS or JavaScript. Tools such as PurgeCSS can help.
  • Always test the site after making changes, to make sure nothing has broken.

Optimising your site's code is a critical step towards a faster site, a better user experience and improved SEO rankings. 

8. Using Accelerated Mobile Pages  (AMP) 

Mobile users expect sites that load quickly. Accelerated Mobile Pages (AMP) let your site load almost instantly on mobile devices. It is a Google-backed project designed to improve the mobile browsing experience. 

What is AMP?

AMP is a simplified, lightweight version of your site. It uses a special framework that strips out unnecessary elements such as heavy JavaScript  and complex animations. The result is a light, fast page that loads perfectly on any mobile device. 

Why does AMP matter?

  • Fast loading on mobile: AMP pages load in under a second, which improves user satisfaction.
  • Improved SEO - Google gives priority to AMP pages in mobile search results, and they may appear in special features such as the Top Stories carousel.
  • A better user experience: fast pages reduce bounce rate and increase engagement.

How do you set up AMP?

  • Choose an AMP plugin for WordPress users, plugins such as AMP by Automattic or AMP for WP will help create AMP versions of your pages.
  • Validate your AMP pages - use the AMP Validator tool to confirm your pages meet the AMP rules.
  • Customise your AMP pages - keep your brand's look by matching fonts, colours and logos on AMP pages.

Rules of thumb for using AMP 

  • Prioritise important content such as headings and images.
  • Avoid heavy elements such as pop-ups or complex forms.
  • Use AMP analytics to track visitor behaviour and make improvements.

9. Optimising your database 

Your site's database stores all its important information, including posts, user data and settings. Over time the database can fill up with unnecessary items, which slows the site down. Cleaning and optimising it can improve speed significantly. 

Why does database optimisation matter?

  • An overloaded database lengthens the time it takes to search for and load information.
  • Regular optimisation keeps the database fast and efficient, and improves site performance.

How do you optimise your database?

  • Delete unused data: remove old post revisions, spam comments and deleted items. These take up unnecessary space.
  • Optimise your tables: use tools such as phpMyAdmin to run optimisation commands that organise and clean up database tables.
  • Limit post revisions: set a limit on how many revisions are kept per post to prevent unnecessary build-up.
  • Use a database optimisation plugin: plugins such as WP-Optimize or Advanced Database Cleaner simplify the clean-up process.

Rules of thumb for database management 

  • Schedule regular clean-ups, monthly or weekly for example.
  • Back up the database before making changes, to avoid losing data.
  • Monitor database performance with tools such as Query Monitor.

10. Regular monitoring and testing 

Maintaining your site's speed is an ongoing task. Regular monitoring and testing let you spot problems early and fix them before they slow the site down. 

Why does monitoring matter?

  • Site performance can change following updates, traffic spikes or new features.
  • Monitoring ensures the site stays fast, reliable and user-friendly.

How do you monitor site speed?

  • Use speed testing tools: tools such as Google PageSpeed Insights, GTmetrix and Pingdom show load data and recommendations for improvement.
  • Track your Core Web Vitals: check LCP, FID and CLS regularly to make sure they meet Google's standards.
  • Set downtime alerts: services such as UptimeRobot will let you know if the site goes down or loads slowly.

Rules of thumb for testing 

  • Test speed from different locations to see how it varies for a global audience.
  • Test the site on different devices, particularly mobile, to ensure consistent performance.
  • Run tests after significant updates or changes, such as new plugins or features, to avoid surprises.

Tips for ongoing maintenance 

  • Update your site software, plugins and themes to ensure compatibility and performance.
  • Clear out unused files and data, such as old media or plugins you no longer need.
  • Run a monthly audit to find broken links or oversized files.

In summary 

Site speed matters more than ever. A fast site improves the user experience, helps your SEO rankings and contributes to business growth. By applying the strategies in this guide, you can make sure your site loads faster and works better for everyone. 

The key steps, in summary: 

  • Understand why site speed matters.
  • Focus on Core Web Vitals to improve speed and user satisfaction.
  • Choose a hosting provider that delivers reliable, fast performance.
  • Optimise your images and your site's code.
  • Take advantage of AMP and a CDN.
  • Carry out ongoing maintenance and regular testing.

Improving site speed is an ongoing process, and regular updates and testing will keep your site fast and competitive.

We hope you enjoyed reading this article on improving website speed. At Weiz we believe site speed matters enormously to how a site performs in every respect. Improving website speed is an area well worth investing in. We offer website speed improvement as part of our services and would be glad to hear from you.

With ❤ from the Weiz team.