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!
The source code is at https://github.com/xinan/zoom-per-tab which you can read 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!
Extore is a team of professionals who are passionate about creating extensions for web browsers. This devotion also gives us opportunity to appreciate work of other people. We get inspired by useful, open source extensions made by developers all over the world. Our strong belief is that one should share helpful add-ons with others. That’s why we’d like to present you our ever-growing list of favourite extensions that have inspired us. Moreover, as you probably have already learned, sometimes struggling for the best brings an end to the good. Talking about add-ons it often turns out that an upgrade is worse then previous version. Also it can become really tricky to get back to the beloved version of your favourite extension. That’s why we’re going to make not only the latest, but all versions of our favourite (and we hope yours too) add-ons available for download. No more compromises, just stick to the version you really like!