A website demonstrating common technical SEO problems
Every page on this site has one thing wrong with it, on purpose: a missing title, a redirect loop, a page nothing links to. Point an SEO crawler at the site and see which problems it catches.
What's on it
Each page breaks one thing and is otherwise fine, so an audit sees a single problem instead of a pile of them. Every page shows what it is testing and which issue an audit should report. Start with the catalog, or open the kitchen-sink page, which breaks six ways at once.
Why it exists
SEO tools all say they find broken titles, duplicate pages, redirect chains, and thin content. It is hard to check that they actually do. badseo.dev gives you a site that is broken in known ways, so you can run a crawler against it and compare what it finds to what is really there. We use it to test the OpenSEO audit.
It's open source
The site is open source. If there is a common SEO mistake it does not cover yet, you can add it. Each page is one small file that lists the issues it should trigger, so a new page also works as a test. It is maintained by the team behind OpenSEO, an open-source SEO tool.
Run an audit
OpenSEO can crawl badseo.dev and report the issues on each page, along with how to fix them. It is a straightforward way to see what a crawler catches.