Comment by zahlman

It is https://github.com/silentsoft/hits . It works by loading an SVG "shield" file (like the ones you see at the top of GitHub readmes all the time) from their server from a unique URL (you just choose one when you write/render your HTML). The server, implemented in Java, just counts hits to each URL in a database and sends back the corresponding SVG data. There's also a mini dashboard website where you can check basic stats for a given URL (no login required, everyone's hits-per-day stats are just public) and preview styling options for the SVG. For example, for my most recent blog post https://zahlman.github.io/posts/2025/12/31/oxidation/, I configured it such that you can view the stats via https://hits.sh/zahlman.github.io+oxidation/ (note that the trailing slash is required).

(The about section on GitHub bills the project as "privacy-friendly", which I would say is nonsense as these dashboards are public and their URLs are trivially computed. But it's also hard to imagine caring.)