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What is Shortwave Image Fetcher?

Direct Answer: Shortwave Image Fetcher bot, operated by Shortwave Communications Inc., proxies images in HTML emails to protect user IP addresses and connections.

Operator: Shortwave Communications Inc. Type: Social Media Bot Purpose: Protecting user IP addresses and connections by proxying images in HTML emails

The Shortwave Image Fetcher bot is used by Shortwave Communications Inc.'s email client to proxy images found in HTML emails. This is done to protect end customers' IP addresses and connections from being tracked. The bot is part of Shortwave's AI-powered email services.

User-Agent Identification

The following user-agent strings identify Shortwave Image Fetcher in your live traffic data:

  • Shortwave Image Fetcher

robots.txt Rules for Shortwave Image Fetcher

Respects robots.txt: No

Robots.txt has limited effect on user-initiated bots

Shortwave Image Fetcher is triggered by user actions within Shortwave Communications Inc.'s products. While Shortwave Communications Inc. 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:Not Documented

Request Pattern:Not Documented

Crawl Activity Index

Relative crawl activity for Shortwave Image Fetcher 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 88.9

Source: Cloudflare Radar

Why track Shortwave Image Fetcher traffic?

Ensure your link previews render correctly. Shortwave Image Fetcher fetches your pages to generate link preview cards on Shortwave Communications Inc.. If it can't access your meta tags, your shared links display broken or generic previews.

Monitor social sharing activity. Shortwave Image Fetcher requests correlate with how often your URLs are being shared on Shortwave Communications Inc., even before engagement metrics are available.

Log Verification

To verify Shortwave Image Fetcher traffic in your live traffic data:

  1. Search access logs for the user-agent strings listed above
  2. Check if the IP addresses match documented ranges (if provided by Shortwave Communications Inc.)
  3. Verify the crawl pattern matches documented behavior
  4. 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 Shortwave Image Fetcher:

  • crawl frequency
  • request pattern
  • IP verification method
  • JavaScript rendering

Verify your link previews work — and track social bot access

  • Confirm Shortwave Image Fetcher can access your Open Graph meta tags
  • Track which URLs are being shared on Shortwave Communications Inc.
  • Detect failed fetches causing broken preview cards
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Official Documentation

View Official Shortwave Image Fetcher Documentation →

Information sourced from official documentation. Content generated with AI assistance.