Where is the downloaded Chromium browser stored?

[mountaindude]

Question

Where is the downloaded Chromium browser stored?
And will it be re-downloaded again and again, eating up disk space?

Answer

No, Chromium is only downloaded once on each computer where Butler Sheet Icons is used.
At least only once for each Chromium version.
New versions of Butler Sheet Icons may use a different/later version of Chromium and then that version will be downloaded.
The older version is not automatically removed.
If several users log into a server and each run Butler Sheet Icons, separate Chromium instances will be downloaded for each user.

It's easy to find where Chromium is stored.
Just set the log level to verbose and you will see the lines below in the console log.
The location will be different on Windows, macOS, Linux and Docker.

The log below is from macOS.

2022-03-22T16:09:24.644Z info: Downloading Chromium browser revision 961656...
2022-03-22T16:09:24.644Z verbose: Download done.
2022-03-22T16:09:24.644Z verbose: Using Chromium browser at /var/folders/hm/8s3g4t3d76n0w5ddd6jblxqw0000gn/T/.local-chromium/mac-961656/chrome-mac/Chromium.app/Contents/MacOS/Chromium