Lanto is a batch photo resizer. Simply drag photos over to Lanto. They will be converted to the format you desired. With intuitive user interface and powerful functions, you don't need to learn anything in order to use this application.
For versions of Ubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf), as well as Ubuntu flavours that don’t include snap by default, snap can be installed from the Ubuntu Software Centre by searching for snapd.
Alternatively, snapd can be installed from the command line:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install Lanto, simply use the following command: