The On-Page SEO Checklist Every Website Needs

Before chasing backlinks or content volume, most sites have quick wins sitting unfixed on their own pages. This on-page SEO checklist covers exactly what to check on your key pages first, in priority order.

Title tags & meta descriptions

• Every page has a unique, descriptive title tag under ~60 characters
• Every page has a meta description under ~155 characters that includes your target phrase naturally
• Titles lead with the most important keyword, not your brand name

Headings & structure

• Exactly one <h1> per page, matching the page's main topic
• H2/H3 subheadings break content into scannable sections
• Heading hierarchy is logical (no skipping from H1 to H4)

Content

• Content actually answers the search intent behind the target keyword
• Focus keyphrase appears naturally in the first 100 words
• No thin or duplicate content across similar pages
• Content length matches what's actually needed to answer the query: not padded, not too thin

Technical basics

• Every page has a self-referencing canonical tag
• Pages that shouldn't be indexed (thank-you pages, drafts) are marked noindex
• Images have descriptive alt text (helps accessibility and image search)
• URLs are short, readable, and use hyphens, not underscores

Performance & mobile

• Page loads in under 2.5 seconds on mobile (check Core Web Vitals)
• Site is fully usable and readable on a phone without pinch-zooming
• Largest Contentful Paint, Cumulative Layout Shift, and Interaction to Next Paint all pass Google's thresholds

Internal linking

• Related pages link to each other with descriptive anchor text
• Every important page is reachable within 3 clicks from the homepage
• No orphaned pages with zero internal links pointing to them

Structured data

• Relevant schema markup is present (Organization, Article, Product, FAQ, etc.)
• Schema is validated with Google's Rich Results Test before launch

How often should you re-run this checklist?

Run this on-page SEO checklist for every new page before it goes live, and re-audit your top-performing pages every 6-12 months. Search intent and competitor content shift over time, and a page that ranked well a year ago can quietly slip if it isn't reviewed.

None of this is glamorous, but it's the foundation everything else builds on: you can't out-content a technically broken page. We run this exact checklist on every site we build, and offer it as a stand-alone audit too if you already have a site. See our SEO service for details.