What is Yahoo Link Preview?
Direct Answer: Yahoo Link Preview is a bot operated by Yahoo that fetches data from URLs shared on Yahoo platforms to provide thumbnail images, page titles, and descriptions.
Yahoo Link Preview is a page-fetch client that provides thumbnail images, page titles, and descriptions for Yahoo Mail users who reference pages from a website. It only fetches pages that Yahoo users link to and is not a crawler. The bot's purpose is to enhance the user experience in Yahoo Mail by providing a preview of linked content.
User-Agent Identification
The following user-agent strings identify Yahoo Link Preview in your live traffic data:
Mozilla/5.0 (compatible; Yahoo Link Preview; https://help.yahoo.com/kb/mail/yahoo-link-preview-SLN23615.html)
robots.txt Rules for Yahoo Link Preview
Respects robots.txt: No
Robots.txt has limited effect on user-initiated bots
Yahoo Link Preview is triggered by user actions within Yahoo's products. While Yahoo states it respects robots.txt, the bot operates differently from autonomous crawlers — it fetches specific URLs on demand rather than systematically spidering your site. Server-log monitoring is the only reliable way to verify what actually happens.
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Crawl Behavior
Frequency:On-Demand
Request Pattern:Fetches Pages That Yahoo Users Link To In Yahoo Mail
Official Documentation Quotes
"Yahoo Link Preview is not a crawler: The Preview client only fetches pages that Yahoo users link to."
Crawl Activity Index
Relative crawl activity for Yahoo Link Preview over the past 28 days. Higher values indicate increased crawling intensity compared to the period baseline.
View recent activity data (last 7 days)
| Date | Activity Index |
|---|---|
| Mar 26, 2026 | 88.0 |
| Mar 27, 2026 | 82.7 |
| Mar 28, 2026 | 83.1 |
| Mar 29, 2026 | 81.8 |
| Mar 30, 2026 | 87.3 |
| Mar 31, 2026 | 90.2 |
| Apr 1, 2026 | 88.8 |
Source: Cloudflare Radar
Why track Yahoo Link Preview traffic?
Ensure your link previews render correctly. Yahoo Link Preview fetches your pages to generate link preview cards on Yahoo. If it can't access your meta tags, your shared links display broken or generic previews.
Monitor social sharing activity. Yahoo Link Preview requests correlate with how often your URLs are being shared on Yahoo, even before engagement metrics are available.
Log Verification
To verify Yahoo Link Preview traffic in your live traffic data:
- Search access logs for the user-agent strings listed above
- Check if the IP addresses match documented ranges (if provided by Yahoo)
- Verify the crawl pattern matches documented behavior
- Use reverse DNS lookup for additional verification if available
Note: Observed behavior in production environments may differ from official documentation. Live traffic monitoring provides the only reliable verification of actual bot behavior.
Undocumented Information
The following information is not officially documented for Yahoo Link Preview:
- crawl frequency details
- IP verification method
Verify your link previews work — and track social bot access
- Confirm Yahoo Link Preview can access your Open Graph meta tags
- Track which URLs are being shared on Yahoo
- Detect failed fetches causing broken preview cards
Official Documentation
View Official Yahoo Link Preview Documentation →
Information sourced from official documentation. Content generated with AI assistance.