SEO that holds up when
the algorithm changes.
The Crawl Theory is an SEO resource centre built from real client work — not recycled listicles. Guides, playbooks, and news on technical SEO, content strategy, local SEO, link building, and AI search. Written by practitioners who've actually shipped the work.
What's moving in search, right now.
Algorithm updates, platform announcements, and industry signals — filtered for what's actually worth your attention. No SEO gossip. No clickbait. Just the updates that affect rankings.
Built from the field, not the feeds.
Long-form, field-tested guides that take a problem end to end — written by SEOs who ship this work for a living.
The resource library
Every resource here comes from a real problem we've had to solve on a real site. Pick your topic and dig in.
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- Technical SEO problems on a live site
- Article ideas you'd genuinely read
- Corrections, feedback, or sharper takes