Oh Dear! crawls websites to report broken links and mixed content reporting. In some circumstances we won't crawl all pages. This page explains some of those situations.
Crawl prevented by robots.txt or similar
If you have a
robots.txt page with content similar to this, Oh Dear! will not crawl a single page on your site.
User-agent: * Disallow: /
This content essentially tells robots (search engines like Google/Bing, but also our crawler) to not crawl any page on this site, starting from and including the root page
If you have a robots.txt page like this, we will report 0 pages scanned in Oh Dear!.
Additionally, we also listen to both the HTML tags as well as the
x-robots-tag HTTP header. If we see an HTML tag similar to this, we won't crawl that particular page:
<meta name="robots" content="noindex" />
And here's an example HTTP header that prevents robots from crawling the site: