I recently got turned onto RealFaviconGenerator.net after researching the various icon formats I might need to support and finding a nice in-depth stack overflow answer [1] from the author of that website. I would be surprised if it did NOT support pinned images.
[0] https://realfavicongenerator.net/
[1] https://stackoverflow.com/questions/4014823/does-a-favicon-h...