Firefox lost 3.92% (7.4 million) users in the last 12 months

According to an analysis of the company's report by developer Alex Ivanovs, the number of Mozilla Firefox browser users has decreased by approximately 3.92% (7.4 million) over the past year. Since 2019, the browser has lost a total of 30.3% of users, equivalent to 77 million.

firefox logo banner

Mozilla acknowledges that user numbers fluctuate throughout the year, with declines during the summer and holiday seasons. This trend is evident when comparing China and the US, where both countries experience notable declines starting in late spring/early summer and ending in September. Additionally, the US sees a second decline in December/January (during the Christmas/New Year holidays), while China experiences this decline in mid-late February.


However, despite accounting for seasonal fluctuations, Firefox shows a clear overall downward trend, except in China, as highlighted by Alex Ivanovs.

Brazil9.3 million8.8 million-521 thousand
China20.1 million22 million+1.9 million
France11.4 million10.9 million-487 thousand
Germany19.7 million18.5 million-1.2 million
India12.9 million12.8 million-112 thousand
Indonesia8 million6.8 million-1.2 million
Italy5.5 million5.1 million-412 thousand
Poland6.2 million5.8 million-421 thousand
Russia6 million5.2 million-786 thousand
USA21.8 million20.7 million-1.1 million
All over the world198.4 million190.9 million-7.4 million

Market distribution among major browsers (according to Statcounter as of February 2023):


While Mozilla has previously attributed the fall in core revenues to the pandemic, further research suggests that the shrinking user base is the primary cause. This could potentially lead to obsolescence for the browser.

Ivanovs points out that Firefox supports only a few of the 26 CSS properties introduced this year, which may pose challenges for developers. If Firefox continues to fall behind, developers may lose confidence in the platform, affecting their willingness to optimize it, concludes Ivanovs.


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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

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