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It's easy to share web content like articles, pages, and other links in Slack. When you share a link, you'll see a preview of the content just below your message. If you don't want to see link previews, you can turn them off.
To share a link in Slack, copy and paste the URL into the message field and send. Most links will automatically expand to show a preview of the web page. Here's an example from the desktop app:
Tip: You can create hyperlinks in your messages to give links a cleaner look. To learn more, visit Format your messages.
When previews don't display
Here are some reasons your link may not expand to show a preview:
The link contains no preview data. If the web page doesn't include the necessary embedded data, the preview won't expand.
You linked to a private page or file. For example, you won't see a preview of password-protected YouTube or Vimeo videos.
It was recently posted by another member of your workspace. No attachment will expand if that link was shared in the same conversation within the past hour.
It links to audio or video hosted by a service we haven't not added to our allowlist. We're working to approve more services in future.
http:// was not included. Try adding http:// and your link should expand.
Your message contains more than five links. If more than five links are included, they won't expand.
Tip: Your web administrator can also run your link through our URL debugging tool to confirm what preview metadata is being pulled.
Remove a link preview
From your desktop, hover over the link preview.
Click the that appears on the left side of the link.
Note: The option to remove link previews is not available on the Slack mobile apps.
Turn off link previews
If you’d prefer not to see previews for shared links, you can adjust your preferences:
Click your profile picture in the sidebar.
Select Preferences from the menu.
Click Messages & media from the list.
Below Inline media & links, uncheck the boxes next to Show images and files from linked websites and Show text previews of linked websites.
Note: For some apps and integrations, link previews won't be disabled when the options above are unchecked.
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