Author

Louis Gerecht

Technical SEO practitioner · author of the Crawl Lab blog

Louis Gerecht is a technical SEO practitioner. He designs and maintains Crawl Lab, a free SEO toolbox built for the generative search era, and writes the blog articles dedicated to server log analysis.

His work focuses on what robots actually do on a website: reading server logs (Apache, Nginx, LiteSpeed), crawl budget, errors served to crawlers, and separating AI robots (GPTBot, ClaudeBot, PerplexityBot) from classic search engine traffic. He advocates an honest, verifiable approach to SEO data — no upload, no black box.

Areas of expertise

Server log analysis (Apache, Nginx, LiteSpeed)
Technical SEO and crawlability
Crawl budget
AI crawlers (GPTBot, ClaudeBot, PerplexityBot) and GEO

Articles

All articles signed by Louis Gerecht live on the Crawl Lab blog, starting with the cluster dedicated to server log analysis for SEO.

Read the blog