What is Collapsify?
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. Agent Analytics can track when it visits your website.
Overview
| Operated By | Cloudflare |
| Source | Official Website |
| Expected To Follow Robots.txt | No |
| Insights Last Updated | August 11, 2026 |
Do you operate this agent? Contact us to suggest an update.
Category
Expected Behavior
Collapsify usually makes a single request within seconds of a URL being shared, without crawling further. Traffic rises and falls with sharing activity, so a widely circulated link can produce a sharp burst of fetches.
Collapsify's User Agent
| User Agent | Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10; rv:60.0) Gecko/20100101 Firefox/60.0 Collapsify |
How To Block Collapsify With Robots.txt
Add this rule to your robots.txt file to request that Collapsify not access your website, or use Automatic Robots.txt to request the same of all fetchers at once. You can customize which pages are blocked by swapping out / for a different path.
User-agent: Collapsify # https://knownagents.com/agents/collapsify
Disallow: /Global Statistics for Collapsify
As of August 11, 2026, this data reflects agent visits measured across thousands of websites using Agent Analytics, combined with daily scans of the top 1000 websites and their robots.txt files.
Robots.txt Blocked Percentage
Country of Origin
Robots.txt Blocking Trend
0% of top websites block Collapsify in their robots.txt files.
Overall Fetcher Traffic
2.6% of all web traffic came from fetchers.
Frequently Asked Questions
Should I Block Collapsify?
Usually not. Blocking Collapsify may leave shared links without a title or image, making them less inviting to click. If it begins fetching at unexpected volume, try rate limiting before blocking it outright. Almost none of the top websites we track currently have robots.txt rules for Collapsify.
Does Collapsify Follow Robots.txt Rules?
No. Collapsify is not expected to follow robots.txt directives, so a disallow rule only communicates your preference. Enforce the block with firewall or server rules, then use Agent Analytics to verify that its requests stop.
Does Collapsify Access Private Content?
No. Collapsify has no credentials and should access only the public URL and assets needed for a preview. It does not continue through the rest of your site.
Why Is Collapsify Visiting My Website?
Someone shared a link to your page. Collapsify fetched it to build a preview card, and each new share may trigger another request. A spike often means your content is circulating more widely.
How Can I Tell if Collapsify Is Visiting My Website?
Agent Analytics tracks Collapsify visits in real time alongside every other known AI agent, crawler, and scraper. You can also check your server logs for requests whose user-agent string contains "Collapsify". Look for a page and its preview assets being requested without follow-up navigation. Because Collapsify does not publish a verification method, any client can claim its identity and a log match is only a clue.