From where do you load your fonts? What is stylus, a browser extension?

Yes, this kind of browser extension can inject some css into a page. So I can change font-family in my miniflux. This mean a lot for Chinese...

I inject this css to load fonts from google font

@import url('https://fonts.googleapis.com/css?family=Noto+Sans+SC:300,400,500,700&display=swap&subset=chinese-simplified,cyrillic,vietnamese');
.entry-content {
    font-family: 'Noto Sans SC', sans-serif;
    font-weight: 400;
    line-height: 32px;
    letter-spacing: .3px;
}

.entry-content blockquote {
    font-family: 'Noto Sans SC', sans-serif;
    font-weight: bold;
}

See openstyles/stylus#618 (comment)

See openstyles/stylus#618 (comment)

The style can be install without modifying response header. But web font can't load from fonts.googleapis.com unless modifying the header.

Yes, but that's an open issue on Stylus itself, ultimately dependent on a Firefox bug.

https://bugzilla.mozilla.org/show_bug.cgi?id=1267027
https://bugzilla.mozilla.org/show_bug.cgi?id=1411641

At least that first bug had a comment a week ago.

It's cleaner to kindly prod those Firefox bugs than open the CSP for all Miniflux installations.

As a workaround, you can download that particular font file to the server running Miniflux and load it from there, CSP is valid in that case. @fguillot should know more about this.

As a workaround, you can download that particular font file to the server running Miniflux and load it from there

You can also install the font on your system and just inject the CSS that uses it with Stylus. I already use this successfully on several websites to replace the monospace font they use.

You can also install the font on your system and just inject the CSS that uses it with Stylus

In fact, Miniflux now support custom css in setting. You don't need to use stylus. But external font will still be blocked by CSP

Closing out-of-sync and inactive pull-requests.

Feel free to resubmit this PR as long as you follow the guidelines.