Robots.txt allow precedence refers to the rule that governs how a crawler resolves a conflict between an Allow and a Disallow directive in a robots.txt file when both match the same URL path. Google’s implementation follows the specificity-wins principle: the more specific directive takes precedence regardless of whether it is an Allow or Disallow. If two directives are equally specific, Google gives precedence to the Allow directive. For example, a Disallow of /images/ combined with an Allow of /images/logo.png would allow Googlebot to fetch the logo file specifically while blocking the rest of the directory. This behaviour is defined in the IETF RFC 9309 robots.txt standard ratified in 2022, which Google helped draft, and aligns closely with how Google had already operated for years prior to formal standardisation.