What Is Google PageSpeed and Why Does It Matter for Your Business?

What Is Google PageSpeed and Why Does It Matter for Your Business?

Pink Frog Studio
19 November 2025
7 min read

Key Takeaways

  • Learn the fundamentals of web-performance
  • Discover proven strategies that deliver real ROI
  • Get actionable tips you can implement today
Your website's speed is costing you money. Learn what Google PageSpeed really measures, why it affects your rankings and conversions, and see a real case study showing a 47 to 93 score transformation.

Let's start with a number that should concern you: 53% of mobile users abandon a website that takes more than 3 seconds to load.

That's more than half your potential customers gone before they even see what you offer. And it gets worse – Google knows this, which is why they've made page speed a direct ranking factor.

But what exactly is Google PageSpeed? And more importantly, what can you actually do about it?

What Is Google PageSpeed?

Google PageSpeed Insights is a free tool that analyses your website and scores it from 0-100 based on how fast it loads and how well it performs. Think of it as a health check for your website.

Test your website now at pagespeed.web.dev

The scoring works like this:

  • 0-49 (Red): Poor - Your site needs significant work
  • 50-89 (Orange): Needs improvement - Some optimisation required
  • 90-100 (Green): Good - Your site is performing well

But it's not just one number. PageSpeed actually measures four key areas:

1. Performance (The Big One)

This is what most people mean when they talk about "PageSpeed score." It measures how quickly your content loads and becomes interactive. This is calculated from six metrics:

  • First Contentful Paint (FCP)
  • Largest Contentful Paint (LCP)
  • Total Blocking Time (TBT)
  • Cumulative Layout Shift (CLS)
  • Speed Index
  • Time to Interactive

2. Accessibility

How usable is your site for people with disabilities? This affects around 16% of the world's population and is increasingly a legal requirement.

3. Best Practices

Are you following modern web development standards? Using HTTPS? Avoiding deprecated code?

4. SEO

Basic SEO health checks – meta tags, crawlability, mobile-friendliness.

Why PageSpeed Actually Matters

"So what if my site takes a few seconds to load?"

Here's why you should care:

1. It Directly Affects Your Google Rankings

Since 2018 on mobile and 2021 with Core Web Vitals, page speed is a confirmed Google ranking factor. If two sites have similar content but one loads faster, the faster one wins.

Google's logic is simple: they want to send users to sites that provide a good experience. Slow sites don't.

2. Every Second Costs You Money

The data is brutal:

  • 1 second delay = 7% reduction in conversions
  • 2 second delay = bounce rate increases by 32%
  • 3 second delay = 53% of visitors leave
  • 5 second delay = bounce rate increases by 90%

For an e-commerce site doing £100k/year, a 1-second improvement could mean an extra £7,000. A 3-second improvement? That could be £15-20k.

3. Mobile Users Have Zero Patience

Over 60% of web traffic is now mobile. Mobile users are often on slower connections, yet have even less patience than desktop users. If your site is slow on mobile, you're invisible to most of your market.

4. It Affects Your Ad Costs

Running Google Ads? Your landing page speed affects your Quality Score, which affects how much you pay per click. Slow pages = higher ad costs + lower positions.

A Real-World Case Study: D Hall Plant Hire

Let's look at what a difference modern web development makes with a real example.

D Hall Plant Hire & Groundworks came to us with a WordPress website that had been built by a traditional agency. It looked acceptable, but under the hood it was struggling.

Before: The WordPress Site

D Hall Plant Hire old website PageSpeed score of 47 The old WordPress site: Performance score of 47 on mobile

The Numbers:

  • Performance: 47 (Red - Poor)
  • Accessibility: 84 (Orange - Needs work)
  • Best Practices: 100 (Green)
  • SEO: 92 (Green)

The site had classic WordPress problems:

  • Multiple plugins adding bloat
  • Unoptimised images
  • Render-blocking resources
  • Slow server response times
  • Heavy theme with unused code

For a plant hire company where most enquiries come from mobile users on job sites, this was costing them serious business.

After: The Next.js Rebuild

D Hall Plant Hire new website PageSpeed score of 93 The new Next.js site: Performance score of 93 on mobile

D Hall Plant Hire new website homepage The new D Hall Plant Hire homepage - fast, modern, and mobile-optimised

The Numbers:

  • Performance: 93 (Green - Good)
  • Accessibility: 96 (Green - Good)
  • Best Practices: 100 (Green)
  • SEO: 100 (Green)

That's a 46-point improvement in performance – nearly doubling the score.

What Changed?

The new site was built with:

  • Next.js: Modern React framework with built-in optimisations
  • Image optimisation: Automatic WebP conversion, lazy loading, proper sizing
  • Clean code: No plugin bloat, just what's needed
  • Server-side rendering: Pages are pre-built, not assembled on each visit
  • Edge deployment: Served from CDN locations close to users

The result? A site that loads in under 1 second instead of 3-4 seconds. That's the difference between keeping visitors and losing them.

Why Most WordPress Sites Score Poorly

We're not here to bash WordPress – it powered the web for years. But there's a reason most WordPress sites struggle with PageSpeed:

The Plugin Problem

The average WordPress site has 20-30 active plugins. Each plugin:

  • Adds its own CSS and JavaScript
  • Makes database queries
  • Can conflict with other plugins
  • May not be optimised for performance

Need contact forms? Plugin. SEO? Plugin. Security? Multiple plugins. Before you know it, your site is loading megabytes of code for features you don't use.

The Theme Tax

Most WordPress themes are designed to be "flexible" – meaning they include code for hundreds of features you'll never use. That code still loads on every page.

Server-Side Rendering on Every Request

WordPress builds each page fresh when someone visits. It queries the database, runs PHP, assembles the HTML, then sends it to the browser. Every. Single. Time.

Modern frameworks like Next.js build pages once and serve them instantly from a CDN.

How to Improve Your PageSpeed Score

The Quick Wins

  1. Optimise images - Use WebP format, compress them, size them correctly
  2. Enable browser caching - Let visitors store files locally
  3. Minimise CSS/JavaScript - Remove unused code
  4. Use a CDN - Serve files from locations close to users
  5. Upgrade hosting - Cheap shared hosting = slow site

The Real Solution

Here's the uncomfortable truth: you can optimise a WordPress site and get it from 30 to 50, or maybe even 50 to 70. But getting into the 90s consistently? That usually requires a rebuild with modern technology.

Why? Because the fundamental architecture of WordPress creates overhead that no amount of optimisation can fully eliminate.

Modern frameworks like Next.js are built from the ground up for performance. They don't need plugins for basic features. They don't query databases on every page load. They're designed for the modern web.

What Score Should You Aim For?

The Minimum

At absolute minimum, you want:

  • Performance: 50+ on mobile
  • Performance: 70+ on desktop

Below this, you're actively hurting your business.

The Target

For competitive industries:

  • Performance: 70+ on mobile
  • Performance: 85+ on desktop

The Goal

What we deliver at Pink Frog Studio:

  • Performance: 90+ on both mobile and desktop
  • Accessibility: 90+
  • Best Practices: 100
  • SEO: 100

This isn't a target – it's our guarantee. Every site we build scores 90+ on Google PageSpeed.

How to Check Your Current Score

  1. Go to pagespeed.web.dev
  2. Enter your website URL
  3. Wait for the analysis (takes about 30 seconds)
  4. Check both Mobile and Desktop scores
  5. Scroll down to see specific issues

Pro tip: Test your competitors too. If they're scoring 80+ and you're at 40, guess who Google prefers?

The Cost of Inaction

Every day your site is slow:

  • You're losing potential customers who abandon before loading
  • You're ranking lower than faster competitors
  • You're paying more for Google Ads with worse positions
  • You're leaving money on the table

A 3-second site in 2025 is like having a shop with a jammed door. Some people will force their way in, but most will just go next door.

Ready to Fix Your Speed Problem?

If your PageSpeed score is giving you anxiety, you have two options:

Option 1: Optimise what you have

  • Compress images
  • Remove unused plugins
  • Improve hosting
  • Hope for a 10-20 point improvement

Option 2: Build it right

  • Modern Next.js architecture
  • Performance built in from day one
  • 90+ scores guaranteed
  • A site that actually helps your business grow

We've taken sites from 30 to 95. From 47 to 93. From "embarrassingly slow" to "faster than 95% of websites on the internet."


Want to see what a 90+ PageSpeed score looks like for your business? Get in touch – we'll show you exactly what's slowing your site down and what it would take to fix it properly.

P.S. Go test your site right now at pagespeed.web.dev. If that number makes you wince, let's talk.

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Written by Pink Frog Studio

Digital Marketing Specialist

With over 5 years of experience in digital marketing, Pink helps UK businesses unlock their online potential through data-driven strategies and proven tactics that deliver measurable results.

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