Built a Free Sitemap Finder Over a Weekend Got 50 Users from One Reddit Comment
Last weekend I built a small SEO utility that automatically finds XML sitemaps for any website.
The idea came from a client audit where I needed to quickly verify sitemap structure across multiple domains. Most existing tools I tried were either slow, cluttered with ads, or locked behind paid plans.
So I made a simple version focused on one thing only:
Detect common sitemap locations instantly
Support XML and sitemap index files
No signup required
Free to use
I honestly expected maybe a handful of people to use it, but after casually mentioning it in a Reddit SEO thread, around 50 people signed up within a day.
It’s a tiny project, but it reminded me how useful small niche tools can be when they solve a very specific pain point.
Would love feedback from other founders/SEO people here:
What’s the smallest tool you’ve built that unexpectedly got traction?
