Worth Knowing · SEO · AI Search
Google clarifies 503 downtime handling, robots.txt limits and bracket URLs
Search Engine Journal’s SEO Pulse collects several Google Search updates: sites briefly offline for PHP patches should return a 503 rather than a 404 or 200, while robots.txt governs compliant crawling—not how crawled content is later used. The digest also covers bracket URLs and JPEG XL images.
Why it matters
Marketers and SEO teams should know how to preserve indexed URLs during brief PHP-related downtime and avoid assuming that robots.txt controls how retrieved content is later used. It is valuable operational guidance, but not a landscape-changing development.

