Collapsify

What is Collapsify?

About

Collapsify is a Cloudflare internal service that crawls customer error pages to serve them directly from Cloudflare's edge network. This improves performance by caching and delivering error pages from edge locations rather than origin servers. You can see how often Collapsify 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 Cloudflare
Last Updated 5 hours ago

Insights

Top Website Robots.txts

0%
0% of top websites are blocking Collapsify
Learn How →

Country of Origin

Unknown
Collapsify has no known country of origin

Global Traffic

See All Global Bot & LLM Insights →

The percentage of all internet traffic coming from Fetchers

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Robots.txt

Should I Block Collapsify?

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 Collapsify?

⚠️ 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 Collapsify 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.

# robots.txt
# This should block Collapsify

User-agent: Collapsify
Disallow: /

References