Charles Coxhead

Field Notes · Category

SEO

Enterprise and international SEO, measurement and the tools I build for it.

2 posts

22 Apr 2026How to Calculate SEO ROIA practical guide for marketing managers who need to evaluate, justify, and track SEO investment.SEO · 12 min
24 Mar 2026QueryLens – Page/Topic Relevancy ScoringQueryLens is a Chrome extension I made to analyze topical relevance of pages to the target keywords.SEO · 2 min