You can remove PDFs from your Locker by clicking the small x button in the bottom right corner of the PDF tile.
Then click on Remove in the confirmation window.
This will free up storage space, but will not permanently delete the PDF. Instead, it moves it to your Kopernio History.
You can also remove PDFs directly from the Kopernio Document Viewer.
Simply hover over the 'Saved in Locker' top button in the top right-hand side menu.
Hovering over the 'Saved in Locker' button will change the button to 'Remove from Locker?'
You can restore or permanently delete the PDF back to the Locker by going to History. To restore PDF: Search for the article and click on the restore icon.
To permanently delete the PDF: Search for the article and click on the bin icon.