Slack link preview
Preview how any URL unfurls in Slack. Check the title, description, image, favicon, and link card before sharing.
framer.com
Title
Description
Preview Slack link unfurls
A Slack link preview helps you confirm that a URL unfolds into a useful card with a clear title, description, image, and recognizable source before it reaches a channel or direct message.
Title
Check that the Slack unfurl title tells teammates what the destination contains without requiring them to open the link first.
Title
Description
framer.com
Description
The description should provide useful context for a channel conversation while staying short enough to avoid dominating the message thread.
Title
Description
framer.com
Image
Review the unfurl image for relevance and size. Decorative visuals that work in a campaign may feel noisy inside a compact workspace conversation.
Favicon
A clear favicon helps people identify the source quickly when several links and tools are discussed in the same Slack channel.
Title
Description
framer.com
A practical guide to Slack link unfurls
Slack unfurls add context to URLs shared in channels and direct messages. Accurate metadata helps teams judge relevance quickly and keeps automated previews from cluttering conversations.
What is a Slack unfurl?
An unfurl is the expanded attachment Slack creates after detecting a URL. It can include a source, title, description, thumbnail, or larger image depending on available metadata.
Why workplace previews need concise copy
Slack messages already carry conversational context. The card should summarize the destination rather than repeating a long marketing pitch beneath the message.
How Slack uses Open Graph metadata
Public pages commonly provide unfurl content through Open Graph fields. Accessible images, stable URLs, and consistent titles improve the chance of a useful attachment.
Choosing an image for an unfurl
Prefer a recognizable product, document, or article visual over dense promotional graphics. The image may appear as a small thumbnail in a busy channel.
When Slack does not expand a link
Permissions, redirects, crawler blocking, unsupported content, user settings, or missing metadata can prevent an unfurl. Test the exact URL teammates will share.
Keeping internal links trustworthy
Even public campaign pages may circulate internally before launch. Accurate titles and descriptions reduce confusion during reviews and handoffs.
A Slack unfurl testing workflow
Publish the final URL, verify crawler access, share it in a test channel, inspect the attachment, correct metadata or redirects, and retest before broad distribution.