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Marfeel Preview Crawler

Marfeel's previewer crawler used to render preview experiences for both mobile and desktop views.
Marfeel
Preview

What is Marfeel Preview Crawler?

Marfeel Preview Crawler loads pages for Marfeel's mobile and desktop previewer. The official user-agent list shows two browser profiles, both carrying the stable token mrfCompass-Preview.

The mobile profile presents itself as Android Chrome, while the desktop profile resembles Windows Chrome. Both documented strings also end with Googlebot. That suffix does not make the traffic Google Search crawling, so identify this service by mrfCompass-Preview and verify its source before applying any exception.

Marfeel's general crawler policy says it works with canonical URLs and AMP counterparts, reuses centrally cached assets, and does not proactively crawl sites to discover new content. Previewer traffic should therefore be read as a Marfeel rendering operation rather than evidence of open-web indexing.

There is no documented AI search or model-training use for this crawler. Allowing it affects whether Marfeel can render the relevant mobile and desktop previews. The bot record marks it as respecting robots.txt, and Marfeel provides forward-confirmed reverse DNS under crawler.marfeel.com for identity checks.

Indirectly relevant

Is Marfeel Preview Crawler relevant for AI search?

Indirectly. Marfeel Preview Crawler has no AI product of its own, but its output can end up in the systems that AI answers draw on.

Marfeel Preview Crawler fetches pages to build link-preview cards. It does not feed an AI index, but it reads the same Open Graph and structured metadata that AI systems parse to understand your pages, so clean preview metadata doubles as AI-friendly metadata.

How to handle Marfeel Preview Crawler

Allow the previewer on pages that Marfeel users need to inspect in mobile or desktop form. To block the documented crawler token across the site, use:

User-agent: mrfCompass-Preview
Disallow: /

this bot says the crawler follows robots.txt. Do not write the rule for Googlebot, since that would also address Google's crawler and is not the distinctive Marfeel identity.

If a legitimate preview fails at the WAF, confirm the full user agent and verify the source through Marfeel's reverse and forward DNS procedure. Keep authenticated preview environments protected unless you have made a narrow, reviewed exception.

Examples

  • An editor opens Marfeel's mobile preview, causing the Android-style `mrfCompass-Preview` client to load the public canonical page.
  • A developer compares mobile and desktop output and sees two browser-shaped requests with the same Marfeel token.
  • A WAF rule matches the trailing `Googlebot` text too broadly, and the team corrects it to recognize `mrfCompass-Preview` instead.

Frequently asked questions about Marfeel Preview Crawler

Learn about AI visibility monitoring and how Promptwatch helps your brand succeed in AI search.

Marfeel uses it to render preview experiences for both mobile and desktop views.

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