The crawler requires code, servers and bandwidth, all of which cost money. I'm funding the project purely through donations so your support would be awesome.

To make a donation via PayPal you can send it to [email protected] or use the PayPal Me feature by clicking the button below. Contact me for more ways to donate.

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Related materials and information

I've been conducting the Alexa Top 1 Million crawls for some time and produce a report every 6 months that details various metrics including the progress we've made over the last 6 months. You can see all reports at the following links to each blog.


I publish regular articles on all of the security features that the crawler tracks on my blog so if you need any further details then header over there. If you want to know how well your site is doing for all of the Security Headers then check out securityheaders.com and scan your site for free.