Summary
Beginning with Jenkins weekly v2.333 (released on January 31, 2022) and Jenkins LTS v2.346.1, Jenkins core has upgraded from GIF and PNG icons to SVG icons.
Plugins that will be affected by this change are tracked in a spreadsheet found in JENKINS-68251.
Plugins that do not interact with icons are unaffected by this change.
Background
Scalable vector graphics (SVG) icons provide a more attractive user interface.
They are able...