Signposting Sniffing is a Chrome browser extension developed by fdo.extensions. It sniffs webpages for signposting.org links, providing users with a view akin to what robots see. Signposting, aimed at aiding navigation of scholarly web content, enables the publication of scholarly objects like datasets and publications across various web pages. These objects are often presented in a human-readable format, with linkages between them relying on hyperlink text or user knowledge.

The extension's primary focus is to render robot-navigable links in a human-readable format. This functionality benefits web developers incorporating or managing signposting links and enhances the experience of scholarly web users by facilitating programmatic access to previously undiscovered resources.