Some time ago, the Firefox browser has been updated to Firefox Quantum. It introduced a lot of behind-the-scenes changes. Most importantly for me, the Reference Resolver add-on for Firefox stopped working.
Luckily, the new browser is essentially a Google Chromium in disguise, at least in terms of browser add-ons. I used the existing Chrome extension as a template and modified just enough to work with Firefox. Several screenshots and review rounds later, the add-on became available online:
It has most of the existing Chrome features, such as toolbar popup and right-click resolving:
I also taught the Resolver to recognize the user's browser and show automatically the relevant link, Chrome vs. Firefox:
If you have any comments or suggestions, feel free to let me know.