I recently launched QuickAgeCalc.com — a free collection of age, date, and pregnancy calculators built with pure HTML, Cloudflare Workers, and GitHub Actions.
Two weeks in: 1,500+ organic visits/week, 47 countries, zero ad spend, zero monthly cost.
I wrote the full technical breakdown on Dev.to — stack, programmatic SEO approach, GitHub Actions deploy pipeline, and what I'd do differently:
Happy to answer questions about the Cloudflare Workers setup or the SEO strategy.