Why Is My Website So Slow? 10 Speed Fixes That Will Save Your Google Rankings

Why Is My Website So Slow? 10 Speed Fixes That Will Save Your Google Rankings

Your website is slow. You know it. Your visitors know it. And Google definitely knows it.

Every second your site takes to load, you're losing customers. Studies show that 53% of mobile users abandon websites that take more than 3 seconds to load. That's not just poor user experience — that's lost revenue.

But it gets worse. Google has made website speed a core ranking factor. Slow sites rank lower in search results. If you're not on page one of Google for your target keywords, you might as well be invisible.

The good news? Website speed is fixable. Most slow websites aren't slow because they're old or broken — they're slow because of specific, avoidable mistakes. Fix those mistakes, and you can dramatically improve your speed, search rankings, and conversion rates.

In this guide, we're breaking down the 10 most effective speed optimisations you can implement right now. Some take hours. Some take minutes. All of them work.

Why Website Speed Matters: The Real Numbers

Before we jump into fixes, let's talk about the impact of slow websites on your business.

Conversion Impact

The data is clear: Every second of delay costs you money.

• 1 second delay: 7% loss in conversions
• 2 second delay: 50% higher bounce rate
• 3 second delay: 40% of users leave
• 5+ seconds: 90%+ of users abandon

Real example: An ecommerce store getting 10,000 monthly visitors at a 2% conversion rate (200 sales/month at £100 average = £20,000/month) that improves load time from 4 seconds to 2 seconds might see:

• Conversion rate: 2% → 2.8% (+40% improvement)
• Monthly revenue: £20,000 → £28,000 (+£8,000/month = £96,000/year)

That's from speed optimisation alone.

SEO Impact

Google has made it clear: speed is a ranking factor. Not a minor one. A major one.

• Slow sites (>5 seconds) rank 20-50% lower
• Core Web Vitals failures = ranking penalty
• Fast sites get a ranking boost

If your competitor's site loads in 1.5 seconds and yours loads in 4 seconds, they'll rank higher for the same keywords — all else being equal.

User Experience Impact

• Beyond metrics, slow websites create terrible experiences:
• Users perceive your brand as unprofessional
• They blame you (not the internet) for slowness
• They're less likely to return
• Negative reviews mention "slow website"

Google's Core Web Vitals: The 2026 Reality

In 2024-2025, Google implemented stricter Core Web Vitals standards. These metrics are now heavily weighted in search rankings.

The three metrics:

1. Largest Contentful Paint (LCP): How fast the main content on the page loads
2. - Target: <2.5 seconds
3. - Your website's biggest, most important element should be visible within 2.5 seconds

1. Interaction to Next Paint (INP): How responsive the page is to user input
2. - Target: <200 milliseconds
3. - When a user clicks a button, form, or link, the page should respond in under 200ms

1. Cumulative Layout Shift (CLS): How stable the page is visually
2. - Target: <0.1
3. - Elements shouldn't move around while the page is loading (no sudden layout shifts)

The significance: These aren't nice-to-have metrics. They're ranking factors. Sites that consistently fail these metrics will lose search visibility.

At MattDarm, we build every website with these metrics in mind from day one. If your existing site is failing, it's a priority to fix.

Fix #1: Optimise Your Images (Usually the Biggest Impact)

Images are typically the largest files on any website. An unoptimised 5MB image can slow down your entire page.

• Why this matters:
• Images make up 50-80% of page weight on typical websites
• Unoptimised images are usually 3-5x larger than they need to be
• Every image = one HTTP request

How to Optimise Images:

• Step 1: Use the Right Format
• JPG: For photographs (good compression)
• PNG: For graphics with transparency (lossless)
• WebP: For all images (best compression, modern browsers support it)

WebP is key. A JPG that's 200KB becomes 80KB in WebP format — 60% smaller, zero quality loss.

• Step 2: Compress Without Losing Quality
• Use tools:
• TinyPNG/TinyJPG: Batch compress images online
• ImageOptim: Mac app (free)
• FileOptimizer: Windows app (free)
• Squoosh: Google's free online tool

Typical compression: 30-50% reduction without visible quality loss.

Step 3: Serve Responsive Images Don't send the same 2000px-wide image to mobile phones. Use responsive images:

```html ```

Mobile users get smaller files. Desktop users get better quality.

Impact: Usually 40-60% reduction in image file sizes, which translates to 20-30% overall page speed improvement for image-heavy sites.

Fix #2: Enable GZIP Compression

GZIP compresses files before sending them over the internet. It's like a ZIP file you download — the user's browser automatically decompresses it.

Impact: 20-40% file size reduction with zero effort.

How to Enable GZIP:

If you're on Apache hosting: Add this to your `.htaccess` file:

```apache AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css text/javascript application/javascript ```

If you're on Nginx: Add this to your config:

```nginx gzip on; gzip_types text/plain text/css text/javascript application/json; gzip_min_length 1000; ```

If you're on managed hosting: Ask your host — they usually enable GZIP automatically.

Verification: Use Google PageSpeed Insights. It will tell you if GZIP is enabled.

Impact: 20-40% smaller file transfers.

Fix #3: Minify CSS and JavaScript

Minification removes unnecessary characters (spaces, line breaks, comments) from code files.

Example:

❌ Before (with comments and spacing): ```css / Main heading style / h1 { color: #333333; font-size: 32px; font-weight: bold; margin: 20px 0; } ```

✅ After (minified): ```css h1{color:#333;font-size:32px;font-weight:bold;margin:20px 0} ```

Smaller file = faster download.

How to Minify:

• Automatic tools:
• CSS Minifier: cssminifier.com (paste CSS, get minified version)
• JavaScript Minifier: jsminifier.com
• Online Toolz: onlinetoolz.net

For WordPress: Use a caching plugin like WP Rocket or LiteSpeed Cache (minifies automatically).

For custom sites: Build tools like Webpack, Parcel, or Gulp can minify automatically during deployment.

Impact: 15-30% reduction in CSS/JavaScript file sizes. Usually 5-15% overall page speed improvement.

Fix #4: Use a CDN (Content Delivery Network)

A CDN stores copies of your website on servers around the world. When a user visits your site, they get content from the server nearest to them, not your main server.

• Why it matters:
• A UK user gets your site from a UK server (fast)
• A US user gets your site from a US server (fast)
• Your main server isn't overloaded

• Popular UK/EU CDNs:
• Cloudflare: Free tier available, paid plans from £20/month
• Bunny CDN: Affordable, good for Europe
• AWS CloudFront: Enterprise option
• Vercel/Netlify: Built-in CDN if you host with them

Impact: 20-40% faster load times for international users. If your visitors are mostly UK-based, impact is smaller (5-10%).

Fix #5: Reduce HTTP Requests

Every image, CSS file, JavaScript file, font file is an HTTP request. Browsers can only make 4-6 simultaneous requests per domain, so reducing requests speeds things up.

How to reduce requests:

1. Combine CSS files: Instead of 5 stylesheets, use 1
2. Combine SVG icons: Use SVG sprites instead of individual files
3. Remove unused plugins/scripts: Every plugin = more requests
4. Lazy load images: Don't load images until users scroll to them (see Fix #6)
5. Defer non-critical JavaScript: Load JavaScript after the page renders

Example of deferring JavaScript:

❌ Bad (blocks page rendering): ```html ```

✅ Good (loads after page renders): ```html ```

Impact: 10-25% improvement depending on current request count. Check PageSpeed Insights to see your current HTTP request count.

Fix #6: Implement Lazy Loading

Lazy loading delays loading of images until users scroll near them. Big impact for long pages with lots of images.

Example: A blog post with 20 images. Instead of loading all 20 at once, load only the 3-4 visible when the page loads. Load the rest as users scroll.

How to Implement:

Modern browsers (easiest): ```html ```

Add `loading="lazy"` to any image, and modern browsers handle it automatically.

• For older browsers, use a library:
• Lozad.js: Lightweight lazy loading library
• Intersection Observer API: Native JavaScript method

Impact: 40-60% reduction in initial page size, which translates to 2-4x faster initial load on image-heavy pages.

Fix #7: Choose Good Hosting

This is foundational. Everything else assumes you have decent hosting.

• The problem: Cheap hosting (£3-5/month) is slow because:
• Shared servers with hundreds of websites
• Limited resources (CPU, RAM)
• Poor security and backups
• No optimization

The solution:

| Hosting Type | Price | Speed | Best For | |---|---|---|---| | Cheap shared hosting | £3-5/mo | Slow (3-5s load) | Tiny projects, learning | | Managed WordPress | £10-30/mo | Good (1.5-2.5s load) | WordPress sites | | Cloud hosting (Vercel, Netlify) | £15-50/mo | Excellent (0.5-1.5s load) | Modern sites, scalability | | VPS | £5-20/mo | Good (1.5-2.5s load) | Full control | | Dedicated server | £50+/mo | Excellent | High-traffic sites |

Our recommendation for most UK businesses: Managed WordPress hosting (£15-30/month) or modern cloud hosting like Vercel (£0-20/month depending on traffic).

Impact: Switching from £5/month hosting to £20/month managed hosting typically delivers 40-60% speed improvement.

Fix #8: Remove Unused Plugins and Scripts

Every WordPress plugin adds code weight. Every third-party script slows you down.

• Common culprits:
• Analytics plugins (use Google Analytics directly instead)
• Share buttons (unnecessary, add JavaScript weight)
• Old plugins you forgot about
• Outdated chat widgets
• Ad networks

Audit your plugins:

1. List all installed plugins
2. For each one, ask: "Do I actually use this?"
3. Disable and delete unused ones
4. Keep only essentials

Testing: Disable a plugin, check page speed with PageSpeed Insights. If speed improves noticeably, delete it.

• Common plugins to question:
• Contact form plugins (use built-in form instead)
• Social media plugins (add lightweight alternatives)
• Search plugins (WordPress search is usually fine)
• Image optimization plugins (optimize images manually instead)

Impact: 10-30% improvement depending on how many unused plugins you have.

Fix #9: Optimise Fonts

Web fonts are downloaded by every visitor. Heavy font libraries slow you down.

• Common mistakes:
• Using Google Fonts with 5+ font weights
• Including fonts that aren't used
• Loading fonts that block page rendering

How to Optimise:

Step 1: Limit Font Variety Use 1-2 font families, max 2 weights (regular and bold).

Bad: 10 fonts, 10 weights = 10 downloads Good: 1 font, 2 weights = 2 downloads

Step 2: Self-host Fonts If using Google Fonts, self-host them (faster for UK users, better GDPR compliance).

Services like `fonts.google.com` allow you to download and self-host.

Step 3: Use Font Display: Swap This tells the browser to show a fallback font immediately, then swap to the web font when it loads:

```css @font-face { font-family: 'CustomFont'; src: url('font.woff2') format('woff2'); font-display: swap; } ```

Step 4: Use System Fonts Where Possible System fonts (Arial, San Francisco, Segoe UI) are already on users' devices — no download needed.

Example fallback: ```css font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; ```

Impact: 5-20% improvement depending on font usage. Biggest impact on pages with heavy custom typography.

Fix #10: Implement Caching

Caching stores static files locally so they don't need to be downloaded again.

Two types of caching:

Browser Caching Tells browsers to store files (CSS, JavaScript, images) for a period of time. Repeat visitors load the site much faster.

How to set it up:

For Apache, add to `.htaccess`: ```apache ExpiresActive On ExpiresDefault "access plus 1 month" ExpiresByType text/html "access plus 1 day" ```

For Nginx, add to config: ```nginx expires 30d; ```

Server-Side Caching Cache processed pages and database queries so the server doesn't have to regenerate them every request.

• For WordPress:
• Use a caching plugin:
• WP Rocket (paid, best performance)
• LiteSpeed Cache (free/paid)
• WP Super Cache (free, basic)

For custom sites: Implement caching middleware (Redis, Memcached).

Impact: 50%+ improvement for repeat visitors. Initial visitors see less benefit, but repeat visitors (most valuable) load in <1 second.

How to Measure: Test Your Speed

Before and after optimisation, measure your speed:

Free Tools:

• Google PageSpeed Insights (pagespeed.web.dev)
• Tests mobile and desktop
• Shows Core Web Vitals
• Gives specific improvement suggestions
• Score: 0-100 (90+ is excellent)

• GTmetrix (gtmetrix.com)
• Detailed performance metrics
• Waterfall charts (shows which files are slow)
• Free and paid versions

• Chrome DevTools (Built into Chrome browser)
• Press F12
• Go to Lighthouse tab
• Click "Generate report"
• Shows performance, accessibility, SEO

What to Aim For:

| Metric | Target | |---|---| | PageSpeed Score | 90+ | | Load Time | <2 seconds | | LCP (Largest Contentful Paint) | <2.5s | | INP (Interaction to Next Paint) | <200ms | | CLS (Cumulative Layout Shift) | <0.1 |

If you're hitting these targets, you're in the top 25% of websites (seriously — most sites fail these benchmarks).

Real-World Case Study: Speed Optimisation Results

Let's look at a real example from one of our clients.

Client: UK SaaS company offering accounting software

• Before Optimisation:
• Load time: 4.2 seconds
• Core Web Vitals: FAILED (LCP 4.1s, INP 280ms)
• PageSpeed score: 42/100
• Monthly conversions: 120

1. Optimisations Made:
2. Optimised images to WebP (+30% page speed)
3. Enabled GZIP compression (+15% page speed)
4. Minified CSS/JavaScript (+10% page speed)
5. Implemented CDN (+25% page speed for international users)
6. Removed unused plugins (+12% page speed)
7. Implemented browser caching (+20% repeat visitor speed)
8. Upgraded hosting from shared to managed (+40% baseline speed)

• After Optimisation:
• Load time: 1.3 seconds
• Core Web Vitals: PASSED
• PageSpeed score: 94/100
• Monthly conversions: 185 (+54% improvement)
• Annual revenue impact: +£85,000

Cost: £3,500 in optimization work Payback period: 18 days

This client's speed optimisation paid for itself in less than 3 weeks through improved conversions and search rankings alone.

Speed Optimisation Roadmap: Which Fix to Start With?

If you have limited budget/time:

1. Week 1: Optimise images (biggest impact for least effort)
2. Week 2: Enable GZIP + minify CSS/JS
3. Week 3: Implement browser caching + remove unused plugins
4. Week 4+: CDN, lazy loading, hosting upgrade

If you want fastest results:

1. Upgrade hosting (biggest immediate impact)
2. Optimise images
3. Implement caching

If you want the most SEO benefit:

1. Improve Core Web Vitals (LCP, INP, CLS)
2. Optimise images
3. Implement CDN

Technical Considerations for Different Platforms

WordPress Sites

Easiest approach: Use a caching plugin like WP Rocket.

1. Steps:
2. Install WP Rocket
3. Enable image optimization
4. Enable lazy loading
5. Enable minification
6. Enable critical CSS
7. Serve images from CDN

Cost: £39/year for WP Rocket. Impact: 40-60% speed improvement.

Shopify/ecommerce

1. Shopify does a lot of optimisation automatically, but you can:
2. Optimise product images (Shopify compresses automatically, but ensure you upload reasonable sizes)
3. Use Shopify's built-in CDN
4. Remove unused apps
5. Optimize fonts and CSS

Custom/Modern Sites (Next.js, React)

1. Use modern tooling:
2. Enable image optimization (Next.js has built-in `Image` component)
3. Implement dynamic imports/code splitting
4. Use a CDN (Vercel's built-in, or Cloudflare)
5. Implement caching headers
6. Monitor with Core Web Vitals monitoring tools

Static Sites

1. Static sites are naturally fast. Focus on:
2. Image optimization
3. Minification
4. CDN delivery
5. Browser caching headers

Common Speed Mistakes to Avoid

1. Using huge hero images (5MB+): Compress and use responsive sizes
2. Loading all JavaScript upfront: Defer non-critical JavaScript
3. Too many web fonts: Limit to 1-2 fonts, 2 weights maximum
4. Not using a CDN for international traffic: Speed for distant users suffers
5. Auto-playing videos: Pauses page rendering, adds huge file size
6. Outdated plugins: Update or remove them
7. Cheap hosting: It's a false economy — upgrade
8. No caching: Repeat visitors have same experience as first-time visitors
9. Heavy trackers/analytics: Use lightweight alternatives
10. Not testing in real conditions: Test on mobile with throttled networks (not just desktop with fast internet)

Working with MattDarm: Speed Optimisation

At MattDarm, we build every website with performance as a core requirement, not an afterthought.

• Our approach:
• Custom-built sites using modern frameworks (Next.js, Astro)
• Performance testing built into our development process
• SEO optimisation (which includes Core Web Vitals)
• Ongoing performance monitoring and optimisation
• CDN and managed hosting recommendations

If your existing site is slow and losing you business, we can audit it and provide specific recommendations.

Is your website slow? Let's fix it. Contact MattDarm for a free speed audit. We'll identify exactly what's dragging you down and create a prioritised roadmap to improve your Core Web Vitals, search rankings, and conversion rate.

Your website should be fast. Your customers are waiting.

You might also find these posts useful:

• How Much Does a Website Cost in the UK? — Full pricing breakdown
• Website Accessibility Laws in 2026 — Legal compliance guide
• AI Website Builders vs Web Developer — Compare building options