On-Page SEO Best Practices: A Practical Guide

Same Topic, Same Week, Two Very Different Outcomes

The comparison that sticks with us involves two client sites in adjacent, non-competing categories, publishing on genuinely similar topics within days of each other. Neither writer was better than the other. What differed was almost entirely on-page: one article buried its actual point in the fourth paragraph behind a long preamble, used a vague, keyword-free heading structure, and linked to exactly one other page on the site. The other opened with a direct answer, used headings a skimming reader — or a crawler — could parse in seconds, and linked out to four genuinely related pages.

A year on, the difference in organic traffic between those two articles was not small. That's the entire argument for on-page SEO in one story: it's rarely about writing quality. It's about whether the page is structured to be understood quickly, by a human scanning it and a machine indexing it, at the same time.

Title Tags: Write for the Click, Not Just the Crawler

Your title tag does two jobs simultaneously — it tells search engines what the page is about, and it's the actual headline a human sees in the results before deciding whether to click. Keep it to roughly 50-60 characters so it doesn't get truncated, and lead with the primary keyword rather than burying it at the end.

Here's the part most guides leave out: Google rewrites a large share of title tags anyway. Independent analysis covered by Search Engine Land has tracked this rewriting behavior increasing significantly over the past few years — meaning the title you write and the title a searcher actually sees are, more often than not, two different things. The practical implication isn't to give up on writing good titles; it's to write titles clear and specific enough that a rewrite still preserves your intent, and to check Search Console periodically for what's actually being displayed.

Meta Descriptions: Not a Ranking Factor, But Not Nothing Either

Google has been explicit for years that meta descriptions don't directly influence rankings. What they do influence is click-through rate — a well-written description, matched to the actual intent behind a search, earns more clicks than a generic one sitting at the same position. Keep it under about 155-160 characters, include the primary keyword naturally, and write it like you're making a specific promise the page then keeps.

Headings: Structure a Skimming Reader Can Follow

• One H1 per page, matching the page's core topic — not a repeat of the title tag verbatim, but close in intent.
• H2s as genuine signposts, not decoration — someone should be able to understand the whole article's shape just from scanning the headings.
• Answer the likely question early under each heading, rather than building up to it — this serves both a skimming reader and, increasingly, an AI system trying to extract a direct answer for a citation. See our guide to AI Overview Optimization for why that structure matters even more now.

Internal Linking: The Free Ranking Signal Most Sites Ignore

Every internal link is a small vote of confidence from one of your pages to another, and a signpost telling search engines which pages matter most on your site. A page with zero internal links pointing to it is effectively an island — findable only if it happens to rank on its own merit, with no help from anywhere else on your domain.

The fix is simple in principle and constantly neglected in practice: whenever you publish something new, go back and add a link to it from two or three genuinely related older pages. It costs nothing and it compounds — which is exactly the internal linking discipline we followed building out this entire guide cluster.

Content Depth and Search Intent Match

On-page SEO isn't just formatting — it's making sure the content itself actually matches what the searcher wanted. A page targeting "what is technical SEO" needs to answer that plainly; a page targeting "technical SEO checklist" needs to actually be a checklist, not a wall of prose that mentions one in passing. Mismatched intent is one of the most common reasons a well-written, well-optimized page still underperforms — see our technical SEO checklist for exactly the kind of intent-matched, scannable structure we mean.

Images and Alt Text

Every meaningful image should carry descriptive alt text — both for accessibility and because it's one more legitimate signal search engines use to understand page content. Compress images for load speed (which ties directly into the Core Web Vitals work covered in our dedicated guide), and use descriptive filenames instead of generic camera-export names.

Content depth and intent-matching are worth checking against more than one lens too — Moz's beginner's guide to SEO covers the same on-page fundamentals from a slightly different angle, and cross-referencing more than one credible source is generally a good habit before treating any single piece of SEO advice as gospel.

The Practical Checklist

1. Title tag under 60 characters, primary keyword near the front
2. Meta description under 160 characters, written to earn the click
3. Single, topic-matched H1
4. H2s that work as genuine signposts, answering the likely sub-question early
5. At least 3-4 genuine internal links to related pages
6. Content depth matched to actual search intent, not just word count
7. Descriptive alt text on every meaningful image
8. URL slug that's short, readable and keyword-relevant