Googlebot

Google’s crawler: the software that requests pages, renders them and feeds the index.

It arrives as two main user agents, smartphone and desktop, and mobile is the one that decides how your site is evaluated.

Verify the bot before trusting a log line — user agent strings are trivially spoofed by scrapers pretending to be Google.

Rules written in robots.txt, rendering decisions and rate limits all take effect against this specific client, not against a browser.

Knowing how often Googlebot visits which sections tells you where crawl attention is actually going.