BingPreview
Microsoft's link preview fetcher.
- Operator
- Microsoft
- In the user agent
BingPreview- robots.txt token
BingPreview- Follows robots.txt
- does not say whether it follows robots.txt
- Official documentation
- www.bing.com
- Checked on
- 2026-11-11
What is BingPreview?
BingPreview is Microsoft's link preview fetcher. It loads a page to show its preview when a link is shared in a chat or social network.
The operator's description: Generates page snapshots for Bing.
(www.bing.com)
How do I block or allow BingPreview?
With robots.txt, using the token BingPreview. Microsoft does not say whether it follows robots.txt. To block the whole site:
User-agent: BingPreview
Disallow: /To allow it, use Allow instead of Disallow. Before blocking, weigh what it brings: look at how often it visits and what it brings before deciding.
How do I see whether BingPreview visits my site?
In your server or CDN access logs, look for BingPreview in the user agent. Google Analytics does not show these visits: agents do not run its JavaScript.
Anyone can copy the name in a user agent, so counting log lines is not enough. Knocklog reads your site's traffic on any host, confirms who is who, and shows how often BingPreview came, which pages it read and what that brought you.
How do I know it is really BingPreview?
The IP's reverse DNS, confirmed forward and back, must end in .search.msn.com.
Knocklog runs this check on every visit and separates the genuine agent from impostors.
Does BingPreview visit your site?
See in seconds how your site treats AI agents. Then connect your traffic to learn who really came.
Other Microsoft agents
- AdIdxBot Ads checker
- BingVideoPreview Link preview fetcher
- MicrosoftPreview Link preview fetcher
- Bingbot Search engine