How to Uninstall the Imagify Plugin
It is important to restore your images back to the original version before uninstalling the Imagify plugin.
Uninstalling the plugin will not revert your images back by default.
In order to restore your images back to their original version, please follow the guide on How to Restore Media Library Images To Original
You can uninstall Imagify in the two following ways:
From the WordPress admin
You can uninstall Imagify as any other plugin.
On the Plugins tab, you click to Deactivate Imagify and then Delete the plugin.
Manually
You will have to connect via SFTP and delete the wp-content/plugins/imagify folder.
Also please make sure to check and delete the [wordpress-root]/wp-content/uploads/backup
folder and [wordpress-root]/imagify-backup
folder (if it exists).