On-Page SEO Checklist: What Every Page Should Have

On-page SEO is what you can control directly. Unlike off-page factors (backlinks, reviews), on-page elements are entirely in your hands. Here is the complete checklist.

Title Tag

The most important on-page element. Include your primary keyword naturally. Keep under 60 characters. Make it compelling -- this is your search result headline.

Meta Description

Not a ranking factor, but critical for click-through rate. Summarize the page value in under 155 characters. Include a call to action.

Header Structure

Use one H1 per page (your main topic). Use H2s for major sections and H3s for subsections. Include keywords naturally in headers. This creates a clear content hierarchy for both users and search engines.

Content Quality

• Minimum 500 words for service pages, 800 for blog posts
• Answer the search query comprehensively
• Include relevant keywords naturally (not forced)
• Use short paragraphs, bullet points, and subheadings for readability
• Link to related internal pages

Image Optimization

• Descriptive alt text on every image
• Compressed to appropriate file sizes
• WebP format where possible
• Descriptive file names (not IMG_4532.jpg)

Technical Elements

• Clean URL structure (example.com/services/web-design/ not example.com/?p=123)
• Internal links to related pages
• Schema markup appropriate to page type
• Canonical tag to prevent duplicate content issues
• Mobile-friendly layout

AppWT applies this checklist to every page we build and optimize. See our SEO services.