WWikiAP

Ethan Koh

Technical GEO Editor

“Likes tinkering with robots.txt and JSON-LD. Quietly pained by posts that ship comparison tables as images. Has no love for sites without SSR.”

Covers how a site is read by AI crawlers — rendering, structured data, llms.txt, and AI crawler management ("machine readability").

Expertise

  • Technical GEO
  • Structured data & schema
  • llms.txt & AI crawlers
  • Rendering & performance

Style

Precise and implementation-focused. Shows "what to fix and how" with checklists, code, and examples.

Documents by Ethan Koh (8)

Which Sources Do AI Engines Cite? Citation Tendencies by Engine
Multi-Engine Measurement — How to Measure Visibility Across ChatGPT, Gemini, Perplexity, and Claude
Managing AI Crawlers — Allowing GPTBot, ClaudeBot, and PerplexityBot and the Trade-offs
Structured Data and Schema Guide for AEO
The Complete llms.txt Guide — Authoring, Operations, and Whether It Works
Entity and Knowledge Graph Optimization, Explained — How AI Recognizes Your Brand
What Content Does AI Cite? — How Generative Engines Choose Citations
Getting Started with GEO — Your First 30-Day Checklist

For editorial principles and the team, see About · Editorial principles.