Everything tested with a stable version of Firefox and Dev Edition.
So here is what this add-on did: 1. It crashed (both) Firefox directly after installation. 2. As a web dev I tried to adjust some external JS files using magnet URIs. This resulted in: 2.1. At first one file was recognized as "free", but it was at the same time recognized as "non-free" in the view. 2.2. Later all of my files were recognized as non-free even though all had magnet links marking them as free. There was always a "parsing error" shown in the list. 2.3. The default excluded libraries do not include jQuery 3.1.0 (the latest jQuery version), so I could not use the hard-coded excludes as they were just outdated. 3. The option to show what LibreJS currently analyses slowed down the loading process of the website dramatically and I could not see anything. So I basically could not use this option. 4. LibreJS broke -Fallbacks, so it is even worse than if you would have JS completely disabled.
Also the design is ugly, but this is of course very subjective.
This add-on instantiates the ideas of the free software movement. It improves security because non-free scripts are more likely to be malicious. However, it needs some fixes to attract more users. Some modernization efforts will also be great. Emphasizing security, privacy or ease of use would be a good way.
I'll give it 3 stars, because it works and it does what it says. However, even when I completely whitelist a page (youtube comes to mind), page loading is still very slow. If every bit of js on a page is whitelisted or is clean, then page loading needs to occur at normal speed; otherwise the add-on is very limited in its usefulness. I would prefer that it work more like NoScript in terms of page loading.
Great addon but .. Please, for exception for addon anonymox that use custom jquery. I know anonymox isn't open source but nothing bad makes. Problem is also with open source project Diaspora for social services. Thanks for fix.
Sumamente intrusivo y rígido, deja las páginas en blanco sin dar ninguna explicación o reporte, no permite agregar la página bloqueada a una lista blanca temporal o definitiva desde la propia página; el manejo de la lista blanca es sumamente deficiente. Es una pena porque en otros aspectos cumple lo que promete