How I Built an SEO Checker on Cloudflare Workers (Free, No Server)

Every time I launched a landing page, I'd forget something basic. No Open Graph tags. Title tag way too long. Missing canonical URL.

So I built a free pre-flight checklist tool and turned it into a web app.

What It Does

Paste any URL, get a 0-100 SEO score with specific recommendations.

The whole thing runs on Cloudflare Workers - no server, no database, no auth. Just paste and scan.

Most Common Issues Found

1. Missing OG Image (73% of sites) - Links look broken on Twitter/Slack
2. No Meta Description (58%) - Google generates a worse one for you
3. Duplicate Title Tags (41%) - Pages compete against each other
4. Missing Canonical URL (35%) - Same page indexed multiple times

Why Cloudflare Workers?

• Edge execution - fast responses
• Free tier: 100K requests/day
• No cold starts
• Built-in HTTPS

Try It Free

SEO Checker - Paste any URL, get your score, fix the red items, ship with confidence.

No account, no tracking, no server to maintain. Free forever.

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Built with Cloudflare Workers. Because checking your SEO shouldn't require checking your credit card.

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Full disclosure: I'm the developer of SaaSLaunch. I built this tool because I needed it myself.