Single Tab Zoom is a free Chrome add-on developed by Daniel Herr. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This handy tool prevents zooming from being applied to an entire site, allowing users to control zoom levels on a per-tab basis.

By default, Chrome applies zoom settings to the entire site, which can sometimes be inconvenient. However, with Single Tab Zoom, users can override this default behavior and ensure that zooming is only applied to the current tab. This gives users more control over their browsing experience and allows them to adjust zoom levels according to their preferences.

It's worth noting that existing site zoom settings may need to be removed at chrome://settings/contentExceptions#zoomlevels in order for Single Tab Zoom to function properly. This add-on is a useful tool for users who want more flexibility and control over their browsing experience in Chrome.