Page Speed, explained properly.
What is page speed?
Page speed describes how quickly a webpage loads and becomes usable. It is a confirmed ranking factor for Google, especially for mobile results, and it affects user engagement, bounce rates and conversions. Modern measurement focuses on Core Web Vitals rather than just load time.
Why page speed matters
- **User experience.** Faster sites feel professional and trustworthy. - **SEO rankings.** Google rewards performance. - **Conversion rates.** Users abandon slow sites. - **Crawl efficiency.** Faster pages improve crawl budget effectiveness.
What affects page speed?
- **Server response time (TTFB).** Time to First Byte measures server response delay. - **Page weight.** Large images, bloated JavaScript and excessive CSS slow performance. - **Render-blocking resources.** CSS or JavaScript that prevents the page rendering until fully loaded. - **Third-party scripts.** Chat widgets and tracking scripts hurt performance. - **Caching.** A lack of browser or server-side caching slows repeat visits. - **Fonts.** Custom web fonts, especially Google Fonts, can cause delays if unoptimised. - **Images.** Uncompressed or oversized images are a common problem. WebP format and lazy loading are recommended.
How to measure page speed
- **Google PageSpeed Insights.** Scores sites and breaks down Core Web Vitals. - **GTmetrix.** Combines Lighthouse and YSlow scoring with waterfall views. - **WebPageTest.** Advanced control over location, device and connection speed testing. - **Chrome DevTools.** The Performance tab shows real-time rendering and resource timelines.
Core Web Vitals and SEO
- **LCP** measures loading performance. - **FID** measures interactivity. - **CLS** measures visual stability. Google thresholds: LCP under 2.5 seconds, FID under 100ms, CLS under 0.1.
Improving page speed
- Enable browser caching. - Use a lightweight theme and limit plugins. - Minify CSS, JavaScript and HTML. - Defer non-critical JavaScript. - Use a CDN such as Cloudflare or Bunny.net. - Optimise and lazy-load images in WebP. - Limit external scripts. - Upgrade hosting.
Platform-specific page speed advice
- **WordPress.** Use WP Rocket or FlyingPress, avoid heavy page builders like WPBakery, and check performance with Query Monitor. - **Shopify.** Minimise app usage and optimise theme assets. - **Wix and Squarespace.** Optimisation options are limited, so focus on content structure and image handling.
How we handle page speed at BrisTechTonic
1. Audit with multiple tools. 2. Implement priority fixes via the theme and server. 3. Test changes on staging before live deployment. 4. Automate ongoing monitoring with alerts.
Page Speed: common questions.
What are Core Web Vitals?
Three metrics measuring the largest content element's load time (LCP), responsiveness to user input (INP) and page layout stability (CLS), each with Google's Good, Needs Improvement and Poor thresholds.
How fast does my page need to be?
Google's Good thresholds are LCP under 2.5 seconds, INP under 200 milliseconds and CLS under 0.1.
How do I improve page speed?
High-impact fixes include image optimisation, reducing JavaScript blocking, removing unused CSS, enabling caching and using a CDN.
Does page speed affect mobile and desktop equally?
Mobile is more critical due to slower connections, sharper conversion rate drops and Google's mobile-first indexing prioritisation.
What clients say about working with us.
“I've had the pleasure of working with Chris on several SEO projects for my websites in the health field. He was definitely been able to demystify things so that I felt able to make decisions with him and feel confident they were the right ones. For a non-techie, that is worth gold! I look forward to working with Chris again and warmly recommend him to anyone who - like me - is unsure about all things SEO.”
“I was recommended by my branding partner to use Chris and his team last year. I can’t recommend them highly enough. They are very responsive , easy to communicate with and great at translating techy stuff when needed. They are now an essential part of my business model”
“We've been working closely with Chris, Hannah and the team for over 12 months now. As a small company with ambitious growth plans, it was incredibly important that we made the right choice on who to trust with our SEO. 18 months later, we're totally thrilled with our experience so far and our growing online presence within our market. We'd happily recommend BTT and their services to other SMEs. Drop them an enquiry!”
Real people on your account, not a faceless agency.
You work directly with the senior people who do the work, a small Bristol team you will actually get to know, not a call centre or an account manager relaying messages.
Meet the team →
