On-page SEO is everything you can control on the page itself: the title tag, the headings, the words you write and the links between your pages. It is not the glamorous side of SEO, but in my experience working on search optimisation for e-commerce and business websites, it is where most rankings are won or lost.

This checklist covers the three elements I check first on any page: title tags, headings and internal links. Work through it page by page, starting with the pages that matter most.

Why On-Page SEO Still Matters

Search engines have become very good at understanding content, but they still rely on the signals you give them. A clear title tag tells Google what the page is about. A logical heading structure tells it which ideas matter most. Internal links tell it how your pages relate to each other.

These signals also help real visitors: a good title tag is what people see in search results and decide whether to click, and clear headings let a reader scan a page in seconds. None of this is a trick to fool Google — it is simply making your content easy to understand.

Title Tags: The First Thing Google and Searchers See

The title tag is the single most important on-page element. It appears as the clickable headline in search results and in the browser tab, and it carries real weight in rankings.

Keep it focused and unique

Every page on your site should have its own title tag. If two pages share the same title, Google has to guess which one matches a search — and it often guesses wrong. Each title should say what makes that page different.

Put the main keyword near the front

Include the main topic of the page, ideally near the beginning of the title. Do not stuff the title with extra keywords; one clear topic, written the way a person would search for it, is enough.

Aim for a natural length

As a rule of thumb, keep title tags around 50 to 60 characters. Longer titles get cut off in search results with an ellipsis, which can hide your most important words. Write the title for the reader first, then check the length.

Make it worth clicking

The title is also an advertisement for the page. A title like "On-Page SEO Checklist" is accurate but flat; adding what the reader gets — a checklist, a practical guide — gives people a reason to choose your result over the nine others on the page.

Meta Descriptions: Short Summaries That Earn Clicks

The meta description does not directly affect rankings, but it does affect whether people click. Think of it as a short pitch, around 140 to 160 characters, that expands on the title and tells the searcher what they will find. Every important page deserves its own description in plain language. If you leave it blank, Google will pick a snippet from the page itself — and it may not pick a flattering one.

Headings: Structure Your Page Like an Outline

Headings (H1, H2, H3) give a page its skeleton. They tell readers and search engines how the content is organised, and they make long pages far easier to use.

One H1 per page

The H1 is the main heading of the page — the topic itself. Use exactly one, and make it match the title tag closely. If your page has two H1s, neither one is clearly the main topic.

Use H2s for the main sections

Break the content into sections with H2 headings, and use H3s for sub-points inside them. A reader should be able to understand what the page covers just by reading the headings. If you find a long block of text with no heading in sight, that section needs splitting.

Write headings for readers, not for keywords

It is fine for a heading to contain a relevant keyword, but headings exist to guide readers. "How to Check Your Title Tags" is a better heading than a keyword-stuffed phrase nobody would say. Clear headings also help accessibility, since screen readers use them to navigate a page.

Internal Links: Connect Your Pages Into a Site

Internal links are the links between pages on your own website. They pass authority from stronger pages to newer ones, help Google discover and understand your content, and keep visitors moving through your site instead of leaving after one page.

Link from a page to other pages where it genuinely helps the reader. A post about on-page SEO can point to a technical SEO audit checklist for readers who want to go deeper. Use descriptive link text that says where the link goes — "technical SEO audit checklist" rather than "click here". A few well-chosen links per page beat dozens of forced ones.

Also check for orphan pages: pages with no internal links pointing to them. If nothing links to a page, visitors will rarely find it and Google may treat it as unimportant, however good the content is.

Content Quality: The Foundation Underneath

Title tags and headings only work when the content underneath them is genuinely useful. Write for the person who searched, answer their question early, and show real experience where you have it. Keep paragraphs short, use lists for steps, and update pages when the information changes. Readers can tell the difference between a page written by someone who has done the work and one assembled from generic advice.

The Quick Checklist

Run through this list for every important page on your site:

• Unique title tag, 50–60 characters, main keyword near the front
• Unique meta description, 140–160 characters, written for the reader
• One H1 that states the page topic clearly
• H2 sections that outline the content, with H3s where needed
• At least one relevant internal link, with descriptive link text
• No orphan pages — every page is linked from somewhere useful
• Content that answers the search intent in the first few lines

Frequently Asked Questions

How often should I review on-page SEO?

Check your most important pages every few months, and every new page before it is published. A quick review takes minutes per page once the checklist becomes habit.

Do title tags still affect rankings?

Yes. Google sometimes rewrites titles in search results, but the title tag remains one of the strongest on-page ranking signals, and it directly affects click-through rates.

How many internal links should a page have?

There is no fixed number. Link where it helps the reader, usually a few per page. The goal is a useful network of related pages, not a quota.

Can I use the same keyword on several pages?

You can cover related topics across pages, but each page should target its own distinct angle. If two pages chase the exact same keyword, they compete with each other — a problem often called keyword cannibalisation.

Start With Your Most Important Pages

You do not need to fix your whole site in one day. Start with the pages that bring in traffic or sales, work through the checklist, and move on to the next batch. On-page SEO is unglamorous, repetitive work — but it makes everything else you do in SEO perform better.