Newsguard seems to take a good approach. However, I also have the impression that Newsguard itself is not entirely open and transparent about what opinions and currents are represented there. The ratings sometimes seem a bit biased, while pages of dubious reputation sometimes come off surprisingly well.

I would advise against this add-on. After use and research, I've found it to be more of an opinion-based censor than an actual truth-verifying app of any use.

Inutile nella sua funzione

The app was founded by one right-leaning and one left-leaning news entrepreneur, and their advisory board has people that worked for both Democrat and Republican administrations. Read their detailed reviews of sites, not just the nutrition label, before you knock this extension. It is a needed resource these days. They also have adjusted ratings based on communications with the sites they review, and this is included in the detailed article. As a more liberal news consumer, I have used the extension to both widen and fine-tune my news consumption, finding solid sources on the other side to check my own narrow lens and also finding out shortcomings with some of the sites I frequent.

Great extension in crazy times where people confuses a blogger with a journalist!

Great idea, hope it catches on more widely. Seems there have been some teething problems but patience, they'll get it right.