Also bearing in mind you are not "required" to edit the provided site_logo.svg at all... the only person who "must" have an .svg editor in response to this change is the author of the prosilver style.
If you're changing or replacing the logo image -- and you don't particularly like using .svg, or don't think it's necessary or appropriate for your logo -- you're free to use whatever format you want when changing the logo.
Just modify the site_logo CSS in /styles/prosilver/theme/colours.css (or in your derived theme) to point to whatever image file you would rather use:
Code: Select all
.site_logo {
background-image: url("./images/site_logo.svg");
}