How do I include videos in a broadcast message?

Last updated: April 4, 2025

Context

When creating a broadcast message, you may want to include video content to demonstrate features or share updates with your users. Understanding the options and limitations for sharing videos in broadcasts is important.

Answer

Due to Slack API limitations, videos cannot be directly attached to broadcast messages. However, there are several workarounds available:

  1. Share a link to the video: Upload your video to a hosting platform (like YouTube, Loom, etc.) and include the link in your broadcast. Note that link unfurling (preview) may not always display for videos in broadcasts.

  2. Use GIFs for short content: For brief demonstrations, you can convert your video to a GIF format. Important limitations:

    • The GIF must be under 2MB to play inline

    • Lower frame rates and resolution may be necessary to meet size requirements

    • Best suited for clips under 15 seconds

  3. Send as a preview: Before sending your broadcast, use the 'Send Preview' button to test how your video link or GIF will appear in Slack.

Pro tip: When using YouTube links, ensure the "Display link previews below message" option is checked in the broadcast composer if you want the video thumbnail to appear.