Inside Googlebot demystifying crawling fetching and the bytes we process
7 days ago
Googlebot is part of a centralized crawling platform for various Google products, not a single crawler. It fetches up to 2MB per URL (64MB for PDFs), including headers, ignoring bytes beyond this limit. Linked resources are fetched separately with their own limits. The Web Rendering Service processes fetched bytes, running JavaScript and CSS but works statelessly. To optimize, keep HTML lean, place key elements early, and monitor server response times.