Kind of surprised that this guy left Safari out of his stats. As many of us who do web dev know, Safari, primarily driven by mobile, is a fairly massive portion of browser traffic in many countries.

I was a bit confused by “Revenue derived from Google”, so I checked the source that is cited for 2022 in that Wikipedia article. But I couldn’t find the term “Google” or “Alphabet” at all. It only states that approximately 81% comes from “one customer” (Page 16).

So I checked further. The report lists the total revenue as 593,516,000 $, of which 510,389,000 $ comes from royalties (Page 4).

Further down, royalties are defined (Page 13):

Royalties - Mozilla provides the Firefox web browser, which is a free and open-source web browser initially developed by Mozilla Foundation and the Corporation.Mozilla incorporates search engines of its customers as a default status or an optional status available in the Firefox web browser. Mozilla generally receives royalties at a certain percentage of revenues earned by its customers through their search engines incorporated in the Firefox web browser.

So 81% (ca. 413,415,000 $*) of these royalties, 70% of all revenue, comes from one of these default search engines:

• Google
• Amazon
• Bing
• DuckDuckGo
• eBay
• Wikipedia

* I think the value on Wikipedia is wrong. There 81% of total revenue is used where it should be 81% of the royalities.

In conclusion

Mozilla earns a percentage of the revenue that is generated by the default search engines. 81% of these royalties (or 70% of Mozilla’s total revenue) comes from “one customer”. Wether this is Google, Amazon or an other one can only be assumed.

Any suggestions for corrections?