How do I detect Chromium specifically vs. Chrome?

问题

Is there a way to detect if a visitor to my site is running Chromium as opposed to Google Chrome? Even basic UA sniffing (which I know is bad practice) would suffice for my particular case, but it appears that Chromium and Chrome share the same UA string – is that correct? Is there any other way that I can differentiate between the two?

回答1:

Chrome ships with a built-in PDF reader, Chromium doesn't.
You could detect this by using JavaScript:

function isChrome() { // Actually, isWithChromePDFReader
    for (var i=0; i<navigator.plugins.length; i++)
        if (navigator.plugins[i].name == 'Chrome PDF Viewer') return true;
    return false;
}

This method is not 100% reliable, because users can copy the PDF reader binary from Chrome to their Chromium directory, see this answer on Ask Ubuntu.

There's almost no difference between Chromium and Chrome (certainly not in the rendering or JavaScript engine), so why do you want to spot the difference?

回答2:

New Chromium-versions do have the PDF-plugin, too.
But they also have Chromium-plugins, so if any plugin starts with "Chromium", it's Chromium:

function isChromium()
{ 

    for (var i = 0, u="Chromium", l =u.length; i < navigator.plugins.length; i++)
    {
        if (navigator.plugins[i].name != null && navigator.plugins[i].name.substr(0, l) === u)
            return true;
    }

    return false;
}

回答3:

Here is a variation to Paul W.'s answer that works for Chromium version 42 and above:

function isChromium() { // Actually, isWithChromiumPDFReader
    for (var i=0; i<navigator.plugins.length; i++)
        if (navigator.plugins[i].name == 'Chromium PDF Viewer') return true;
    return false;
}

This of course only works if the plugin has not been disabled by the user.

来源：https://stackoverflow.com/questions/17278770/how-do-i-detect-chromium-specifically-vs-chrome

标签

google-chrome

user-agent

detection

chromium