For Linkedin you can use fab-linkedin
as the icon name in this setting
but since that icon is not included in the default set of icons that Discourse uses, you will also need to add it to the other setting in the component.
The result looks like this for me
Sure, there’s a section in this topic about adding custom icons.
Once you have that setup, you’ll be able to use any custom icons you add in this theme component. Please have a look there and let me know if you run into any issues.
I’ve made that change along with a couple of other implementation improvements here
The new update adds unique prefixed classes to each link based on the title you use. So, for example if you use
facebook, fab-facebook, https://facebook.com, vdm, blank
the link will have the class
header-icon-facebook
The template is header-icon-ICON-TITLE
Which you can then target with CSS like so
.d-header-icons {
.header-icon-facebook svg {
fill: #4267b2;
}
.header-icon-twitter svg {
fill: #1da1f2;
}
// add more icons here
}
which would result in something like this