Hi! My earlier review was too rambling. So, I'd love to give this 5 stars, but couple issues:

Fixed Zoom CSS color-theme defines font-colors that are designed for white, gray or light background, but doesn't define background colour for the extension UI. If using dark/black browser theme, the UI shows with dark background and the UI is unreadable. This shows on both, the popup UI and on Fixed Zoom Rules page.

Also, I haven't figured out a way to implement a rule(s) that set zoom-level of 120% for example.com and 140% for *.example.com and example.com/test/. I got the first two to work with normal rule for example.com and regular expression rule for /(.*)\.example\.com/ (not sure if I needed regular expression for that). But I can't set a rule for example.org/test/. I even tried monstrosity like this: /((.*)\.example.com\/test\/|(.*)\.example\.com)/
I don't really know if the extension can even match against the whole URL or just the domain part, but I'm suspecting it matches only against domain. I would really like if it was possible to match against different websites or even individual pages if necessary as there are often multiple different websites under same domain.

If the extension could fix the former issue and add the latter feature (or provide better instructions on how to create rules if it's already possible).

One more thing: For the Fixed Zoom Rules page, it would be grand if you could choose a rule and edit it (both, the rule and the zoom level) without having to delete, rewrite and add new rule. If not, at least it could allow selecting and copying of text, so a long and complicated regular expression can at least be easily copied for creating a replacement rule.

But great extension! So sorry I couldn't give more than 3 stars, but having to change browser theme whenever I want to edit site rules (and then changing it back) is painful, I hope you can fix it <3

Remove the "Access browser tabs" permission by default, should be activated only if requested by the user.

Its ok, but what I really need is to add a rule for subdomains.
For example there is a homepage with a forum, that should have 85% to get more threads on the display and also a "showroom" with different cards etc. that should be at 150% for better reading.
Can you do that?

Was using a different plugin before Firefox dropped all old extensions. This works great with new Firefox. Why Firefox still not have default zoom like Chrome/Chromium?

Works but upgrade to 2.1.0 lost all settings on all my Firefox instances on multiple accounts and machines. Hope it does not happen to all upgrades.

Works straight out of the box and works with all new tabs, links and pages.
Works with 50 " 4 K tv.
Unfortunately need to be save settings again each time after closing and re-opening the browser

It would be helpful if we could disable the addon for specific sites or let us use custom zoom levels for them. And to add buttons to increase/decrease in 10% steps. The killer feature would be to let us set the zoom level dependent on the current screen's dpi.

Edit: cool, thanks for the fast reply! Yeah I have an external monitor at home and at work but also work without external monitor often where I enlarge the pages because some of them have too small texts. This site correctly identifies the dpi of the screen where the browser is active: http://dpi.lv