What is On-Page SEO?

On-page SEO is the process of optimising the content and structure on your own website so Google understands what you do, where you operate, and who you serve.

It covers everything you can control directly on your site — and it's the foundation everything else is built on.

On-Page vs Off-Page SEO

SEO splits into two sides.

On-page SEO comes first. Get this right, and everything else starts to compound.

The 8 On-Page SEO Elements

01 — Meta Titles

Your meta title is the clickable blue headline that appears in Google search results. It's one of the strongest signals Google uses to understand what a page covers.

Every page needs a unique meta title. For service businesses, it should include your core service and your location — not just your company name.

The stronger version signals the service, the location, and a reason to click — all in one line.

02 — Meta Descriptions

The meta description is the short paragraph that appears below the title in search results. It doesn't directly affect your ranking — but it has a big impact on whether someone clicks.

Think of it as a two-line advert for your page.

• Target length: 140–155 characters
• Your core service
• Your location or service area
• A benefit or differentiator
• A call to action

03 — Heading Structure

Headings (H1–H6) organise the content on your page. Your H1 is the main topic — there should only ever be one H1 per page. H2s are your main sections. H3s are sub-sections within those.

Google reads your heading structure to understand what the page is about. Good headings also make your content easier to read.

• H1: Plumber in Sheffield
  • H2: Our Plumbing Services
    • H3: Emergency Call-Outs
    • H3: Boiler Repairs
    • H3: Bathroom Fitting
  • H2: Areas We Cover
  • H2: Why Choose ABC Plumbing?

Clear hierarchy = clearer signals to Google.

04 — Page Content

Your page content — the actual words on the page — is what Google reads to understand your service. Thin content is one of the most common weaknesses on service business websites.

Your content should naturally include:

• The specific service(s) you offer
• Your town, city, and service area
• The problems you solve
• Types of customers you help
• Why you're the right choice

Don't keyword-stuff. Write for the reader first — Google will follow.

05 — Image Alt Tags

Alt tags are short text descriptions added to images. Google can't actually "see" images — it can only read text. Alt tags tell Google what an image contains, which helps with both SEO and accessibility.

Every image on your site should have a clear, descriptive alt tag.

Keep it specific, include the service and location where natural, and aim for under 125 characters.

06 — Internal Links

Internal links are links between pages on your own website. They help users navigate to relevant content, and they help Google understand your site structure.

When you link from one page to another, you're also passing authority — telling Google that the linked page is relevant and important.

• Your Emergency Call-Out page
• Your Service Areas page
• Your Contact / Quote page

This keeps users on site longer and signals to Google that these pages are related — both positive ranking factors.

07 — URL Structure

Your URL is the web address of a page. Clean, descriptive URLs that include relevant keywords help Google understand the page topic before it even crawls the content.

• yoursite.co.uk/page?id=234
• yoursite.co.uk/p1/service3

• yoursite.co.uk/plumber-leeds
• yoursite.co.uk/boiler-repair-sheffield
• yoursite.co.uk/services/bathroom-fitting

URLs should be lowercase, use hyphens between words, and reflect the content of the page.

08 — Page Speed

Page speed is how fast your website loads. Google uses speed as a direct ranking factor — officially confirmed as part of their Core Web Vitals programme. Slow sites rank lower, especially on mobile.

For most service business websites, the main culprits are large uncompressed images, low-quality hosting, and heavy page builder scripts.

• LCP (Largest Contentful Paint): under 2.5 seconds
• INP (Interaction to Next Paint): under 200ms
• CLS (Cumulative Layout Shift): under 0.1

Test your site free at pagespeed.web.dev

Common Mistakes Service Businesses Make

What To Fix First

If you're starting from scratch, work through these in order:

1. Audit your meta titles — check every page. Are they unique? Do they include the service and location? Fix the homepage and main service pages first.

2. Add content to thin pages — go to your key service pages. If they have under 300 words, rewrite them. Add the service name, location, who you help, and what makes you different.

3. Add location signals — mention the town, city, or area you serve naturally throughout the content. Not stuffed, just present.

4. Compress your images — run your existing images through tinypng.com or squoosh.app. Aim for under 200KB per image, then add alt tags to all of them.

How WAT Websites Handles On-Page SEO

On-page SEO isn't an afterthought at WAT Websites — it's built into every project from day one.

Every site we build includes:

• Unique, optimised meta title and description for every page
• Correct heading structure built from the start
• Service page content written to target local search intent
• All images compressed and alt-tagged before launch
• Page speed optimised as part of every build
• Internal linking structure mapped and implemented
• Ongoing monthly updates as the business grows

Built in. Not bolted on.