There is an "alpha" stage module for Webmin that does ZFS management. Webmin provides a general web management interface for many functions.
First install the Webmin PGP key and repo:
wget -qO - http://www.webmin.com/jcameron-key.asc | sudo gpg --dearmor -o /etc/apt/keyrings/webmin.gpg
sudo sh -c 'echo "deb [signed-by=/etc/apt/keyrings/webmin.gpg] http://download.webmin.com/download/repository sarge contrib" > /etc/apt/sources.list.d/webmin.list'
Then install Webmin:
sudo apt update
sudo apt install webmin
Then Webmin can be accessed on the IP address of the host on port 10000 (https://X.X.X.X:10000/
).
Then download the ZFS Manager Alpha 0.1.5a release:
wget https://github.com/jonmatifa/zfsmanager/releases/download/v0.1.5a/zfsmanager-0.1.5.wbm.gz
From Webmin, open Webmin
-> Webmin Configuration
-> Webmin Modules
. Browse from From local file
, and locate the file zfsmanager-0.1.5.wbm.gz
you downloaded.
Click Install Module
.
After installation, the ZFS Manager module can be found under Hardware
-> ZFS Manager
.

The module has 3 tabs: ZFS Pools
, ZFS File Systems
and Snapshots
. Under Zpools and filesystems, you can view properties, and change them by clicking on the property and selecting its value.
The project has not been updated for several years, but it still supports many basic ZFS functions.
Because of this, use at your own risk!