I just looked how I can slim down my home directory and noticed that Chrome's
.config directory is unusually big. More than 600 MB in my case.
Most of it is occupied by by the Google Play Music extension (fahmaaghhglfmonjliepjlchgpgfmobi). As you can see in the screenshot, the directory contains a lot of versions which accumulate to a lot of wasted disk space. All other extensions have a maximum of two version (although the reason for this may be that they just don't have a lot of updates).
I don't think it's unreasonable to keep one or two versions in case the newer versions mess things up. But I would like to get rid of most of these unnecessary versions.
Can I just delete them or will Chrome act up? Is there a (non-)secret way to do it from the GUI?