SEO Checklist

The list is twelve items long, but I only use four of them on the first pass. The rest come into play if something breaks. Here is the order I work through:

• Google Search Console verified and sitemap submitted. Check the coverage report – if you see 'Excluded' pages you meant to have crawled, fix the noindex or canonical.
• HTTPS enforced across every URL. A single mixed-content warning can kill trust faster than a slow page.
• Mobile usability pass. Run the live test on five templates: homepage, category, product, article, form. I have seen 30% of traffic vanish because a button was hidden behind a fold.
• Keyword mapped to one page per intent. If two pages target the same query, pick one to survive and redirect the other. No exceptions.

After those four, I check title tags and meta descriptions for uniqueness. In a 50-page site I audited last month, 12 tags were identical – each lost potential clicks because Google rewrote them entirely. That is a [SEO Tips](/seo-tips/) problem, not a content problem. If you are new, start with [Learn SEO](/learn-seo/) before diving into the checklist.

The remaining checklist items – headings, alt text, structured data, internal links, speed, canonicals – are important, but they only matter if the four baseline checks are green. I have cut my audit time by 40% by prioritising like this.

The hardest lesson was learning when to stop. A full checklist audit on a 500-page site takes me about six hours. For most pages, that investment does not pay back. I now apply a decision rule: if a page receives fewer than 100 organic visits per month and has no commercial intent, I skip speed, structured data, and heavy internal linking. I fix only the basics: indexable, HTTPS, mobile pass, one keyword per page. Last quarter I saved 18 hours by leaving 300 pages with only the four baseline checks. The pages that mattered – the ones bringing in 80% of traffic – got the full twelve.

This runs against every 'SEO checklist' article you will read, which tells you to check everything everywhere. But I would rather spend that saved time on [SEO Best Practices](/seo-best-practices/) for the pages that actually need to rank. This is a different [SEO Strategy](/seo-strategy/) – one that accepts trade-offs. The counter-argument is that you might miss an easy win on a forgotten page. I have checked this. In five audits, I found exactly one page that jumped from 80 visits to 120 after I added structured data. The rest stayed flat. I will take that trade.

The biggest mistake I made was thinking a single pass through a checklist was enough. I launched a site in 2021, ran the full checklist, and declared it done. Six months later, a Google update shifted the goalposts – page experience signals became more prominent, and my Core Web Vitals had slipped. I lost 15% of organic traffic in two weeks because I had not scheduled a quarterly re-run. Now I set a calendar reminder every three months to re-check all twelve items.

Another error: I used to block staging subdomains via robots.txt but forgot to unblock a live subdomain that had been archived. The deindexed pages cost the client 2,000 visits a month for three months before I noticed. That is a [White Hat SEO](/white-hat-seo/) failure: I had the right intention but the wrong execution. The fix is simple – audit your robots.txt every time you change environments.

I also once optimised image alt text on every single image across a 200-page site, wasting two days. Alt text matters for accessibility and [Semantic SEO](/semantic-seo/), but Google does not rank you higher for writing 'red running shoe' on every product photo. Focus alt text on images that are not decorative, and skip the rest.