Every AI bot · Google

Google-Extended

Not a crawler. It's a name Google reads in robots.txt to decide whether pages it collects for other reasons may be used to train AI. Blocking it doesn't stop Google's other crawlers.

In robots.txt: User-agent: Google-Extended

Named by10.3%of readable robots.txt files on the top 1M (62,050 of 600,979)

Of those, block it72.3%shut it out of the whole site (44,876 of 62,050)

Same sites, since CC-MAIN-2026-34−0.6 ptsshare of the same 394,690 sites that block it by name: 8.4% → 7.7%

Via Cloudflare's file60.0%of its blocks come from Cloudflare's ready-made robots.txt (26,921 of 44,876)Cloudflare stopped adding that file on 16 September 2026, so this month mixes before and after. What happened

72.3%

13.5%

14.2%

Block the whole site: 44,876Block some paths: 8,352Name it but allow it: 8,822

Every robots.txt file on the top 1M that names Google-Extended, by what the rules that apply to it say.

Google's other bots

Sites often treat one company's bots differently, depending on what each is for.

Bot	Purpose	Files naming it	Of those, block it
googleother	Purpose not documented	8,410	38.3%

Who does what

The highest-ranked sites on the top million in each group. Click one to see its whole robots.txt verdict.

Block it

Block some paths

Name it and allow it

Lists skip sites we don't showcase (adult content).

What this means for you: blocking Google-Extended is how you tell Google not to use your pages for AI training, without leaving Google's search. Decide each bot on what it's for, not who runs it.