Migrate rulesets from uMatrix to uBlock-Origin.
Warning
Websites are very likely to break with this setup, so have uBlock-Origin disabled in private windows such that you have a fallback option.
An effort is made to retain similar functionality and blocking as before.
Opt-in under uBlock-Origin settings: "I am an advanced user". Then block 3rd-party scripts and frames globally. Alternatively block only 3rd-party frames (less breakage).
Either enable "Custom" Firefox Enhanced Tracking protection to block all third-party cookies, or use Cookie-AutoDelete.
Export your existing uMatrix and uBlock-Origin rules into text files. Execute it something similar to:
cd examples/ python ../umatrix2ublock.py my-umatrix-rules.txt my-ublock-dynamic-rules_2020-02-26_14.07.25.txt
to obtain a merged ruleset
my-ublock-dynamic-rules.txtcompatible with uBlock-Origin.Import the merged ruleset into uBlock-Origin.
In my browser, I originally had uBlock-Origin (with its default settings) and uMatrix.
I started using uMatrix to block all third-party requests by default (except css and images), and whitelisting a few requests to make the website is functional.
I realized later that most of the time, I was just whitelisting scripts and XHRs. Which meant in principle, I can rely on custom settings as mentioned above. I simply needed to migrate my uMatrix rules that I had aggregated over several months to serve the same purpose.
