Crawler identity

RelogglyBot

RelogglyBot is a fixed-purpose crawler that generates a link preview when a Reloggly user explicitly shares or enters a public URL. It does not crawl the web proactively, build a search index, train AI models, or perform actions on a website.

Purpose and behavior

• A request is initiated only after a Reloggly user supplies a URL.
• The crawler reads public HTML metadata such as Open Graph, Twitter Card, and the document title.
• It may retrieve the preview image declared by that metadata through a size-limited proxy.
• It follows at most five HTTP redirects and never sends user cookies or website credentials.
• Successful metadata is cached to avoid repeated requests for the same URL.

Controls for website operators

RelogglyBot honors applicable robots.txt rules for the RelogglyBot user-agent. Requests are size- and time-limited, and Reloggly applies rate limits and caching to reduce traffic to origin websites.

To explicitly block link-preview retrieval, add the following rules:

Authentication

RelogglyBot uses Web Bot Auth HTTP Message Signatures. Its public signing keys are published by the Reloggly API at the HTTP Message Signatures directory. The private signing key is never published or included in crawler responses.

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