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Editorial Team
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Asked: 2026-05-18T07:41:46+00:00

I have a website, and offcourse like most websites it loads faster in Firefox.

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I have a website, and offcourse like most websites it loads faster in Firefox.

I want to create some form of a bar, which displays on top of my site, whenever a user without FF enters the site.
This bar will say something like “Install FF for better performance etc etc…”

How should I do this? Browser detection I guess, but there are tons of different codes out there. Any code you all know that is more reliable, and better to use?

Btw, does anybody know if I need permission from Mozilla to have such a bar on my website?

Thanks

EDIT: FF IS NOT THE FASTEST BROWSER, I GOT IT!

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1 Answer

  1. Editorial Team

    (Skipping all the arguments on whether what you want to do is a good or a bad thing. Assuming you really like Firefox and want to promote it.)

    1. Use the navigator object to check if the browser is Firefox. navigator.appCodeName, navigator.appName, navigator.appVersion. What you want to do is not a critical part of your website, so you don’t need a fail-safe detection method. If it works for over 95% of your targeted users than the method is good.

    2. I doubt you need permission to advertise a free product. Mozilla even encourages you to do so.

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