Zoom one tab without affecting other tabs of the same domain!
Chrome doesn't let you adjust the zooming of different tabs under the same domain independently? Well you found the cure!
I know there are a couple of similar extensions out there. At first, I wanted to just download one and save myself some time. I soon realized that existing extensions out there for this purpose are so bulky and complicated. Some of them even ask you to install a daemon process that's available on Windows only - this is real bad, and dangerous, but also real bad.
This extension simply makes page zoom settings independent across tabs, regardless of whether they have the same origin. It's ultra-lightweight. It uses a built-in Chrome API, just a few lines of code, no configuration needed at all!
You can unpack the extension to verify that it's not doing anything malicious. In fact I encourage everyone to read it because it's so simple. You could've written it yourself! A copy of the source code is at https://github.com/xinan/zoom-per-tab.