Slack-ImgProxy

What is Slack-ImgProxy?

About

Slack-ImgProxy is a web crawler used by Slack to fetch, process, and cache images that are shared in Slack channels, ensuring they can be displayed properly within the messaging platform. You can see how often Slack-ImgProxy visits your website by setting up Dark Visitors agent analytics.

Expected Behavior

Fetchers visit websites on-demand. They're normally dispatched by apps to present metadata about a link (e.g. the title and thumbnail image) to a user.

Type

Fetcher
Fetches web content on behalf of an app

Detail

Operated By Slack
Last Updated 20 hours ago

Insights

Top Website Robots.txts

0%
0% of top websites are blocking Slack-ImgProxy
Learn How →

Country of Origin

United States
Slack-ImgProxy normally visits from the United States

Global Traffic

See All Global Bot & LLM Insights →

The percentage of all internet traffic coming from Fetchers

Top Visited Website Categories

Law and Government
Online Communities
Jobs and Education
Business and Industrial
Books and Literature
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Robots.txt

Should I Block Slack-ImgProxy?

Probably not. If you block a fetcher, it won't be able to fetch the metadata it needs to display a link preview. Fewer people will click on the link to your website without this.

How Do I Block Slack-ImgProxy?

⚠️ Manual Robots.txt Edits Are Not Scalable
New agents are created every day. Instead, serve a continuously updating robots.txt that blocks new agents automatically.
Set Up Automatic Robots.txt

You can block Slack-ImgProxy or limit its access by setting user agent token rules in your website's robots.txt. Set up Dark Visitors agent analytics to check whether it's actually following them.

User Agent String Slack-ImgProxy (+https://api.slack.com/robots) 
# robots.txt
# This should block Slack-ImgProxy

User-agent: Slack-ImgProxy
Disallow: /

References