How to Set Light Theme as Default Report theme?

Robot Framework
1

After upgrading Robot Framework from 6.1 to 7.1.1, I noticed that the report now supports a dark theme

However, most of our users prefer the light theme, and many don’t realize there’s a toggle button in the lower-right corner of the report to switch between themes.

Is there a way to set the default theme to light ?

Thanks in advance!

2

It seems there’s no direct configuration option to set the default theme in Robot Framework reports.

However, there is a workaround:

The report checks the URL for a theme parameter, as shown in the view.js:

function getPreference() {
    if (urlParams.has('theme')) {
        var urlTheme = urlParams.get('theme') === 'dark' ? 'dark' : 'light';
        storage.set(storageKey, urlTheme);
        urlParams.delete('theme');
        return urlTheme;
    }
    if (storage.get(storageKey))
        return storage.get(storageKey) === 'dark' ? 'dark' : 'light';
    return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
}

Append ?theme=light (or ?theme=dark) to the report URL to force the desired theme.

Example:

report.html?theme=light