Who operates Slack-ImgProxy?

Slack-ImgProxy is operated by Slack. It functions as Slack's link preview bot.

Does Slack-ImgProxy respect robots.txt?

Yes. Slack-ImgProxy generally follows robots.txt directives, so you can allow or disallow it with a rule for its user agent.

Slack-ImgProxy - What It Is & How to Handle It

Q: Should I block Slack-ImgProxy?

Usually no, allowing it lets your shared links render rich previews. Block it only if you do not want preview cards for your pages.

What is Slack-ImgProxy?

Slack-ImgProxy is Slack's link preview bot. Slack-ImgProxy is a bot operated by Slack that fetches and caches images posted in Slack channels. The bot helps improve performance, ensures HTTPS delivery, and protects user privacy by hiding detailed referrer information.

Slack-ImgProxy controls how your links look when they are shared. Rich previews drive clicks across social and messaging platforms, and clean preview metadata also helps AI systems parse your pages. Allowing it keeps your content looking polished wherever it appears.

Like any automated client, Slack-ImgProxy consumes crawl budget and appears in your server and CDN logs. Reviewing those logs alongside your robots.txt rules helps you keep automated traffic deliberate and easy to reason about.

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How to handle Slack-ImgProxy

You will usually want Slack-ImgProxy allowed so shared links render rich previews. Block it only if you do not want preview cards generated for your pages.

To control Slack-ImgProxy, add a rule for its user agent to your robots.txt:

User-agent: Slack-ImgProxy
Disallow: /

Slack-ImgProxy generally honors robots.txt directives.

Examples

When a user shares a link, Slack-ImgProxy fetches the page's Open Graph tags to build a rich preview card.
A team adds Open Graph and image metadata so Slack-ImgProxy renders an attractive preview for shared URLs.