
Download the .zip file and unzip it. Open Lightroom Classic, go to File → Plug-in Manager, click Add and select the plugin folder.
In the Plug-in Manager you'll see the picsel section. Click Sign in and log in with your Google account to link Lightroom with picsel.
In the Lightroom Publish Services panel, find picsel. Create a new collection and choose the picsel album where you want to upload your photos.
Select your photos and click Publish. Photos will move to the Published set as they upload to your picsel album.
Download the plugin and connect Lightroom to your picsel account in minutes.