There's genuinely nothing to download here — the entire tool runs from the web page itself.
On a work laptop, a school computer, or any machine where you can't install software, a download-free tool is often the only option that works at all. This one runs the same way regardless of install permissions.
Traditional EQ software, VST plugins, and even simple desktop audio players typically require an installer, admin rights, and disk space. Skipping the download step removes all three requirements at once.