Hi ProblemSolver, Welcome to EasyEDA. This is what you need to do: https://easyeda.com/forum/topic/First_tool_bars-o531nJH20

@andyfierman Thanks very much for the tip. All fixed Trev Seddon

Also: https://easyeda.com/forum/topic/How_to_resize_preview_dialog_and_toolbar-kUO60FzR9

Hi, I know that my issues relate to inexperience in using this fabulous software, however I have another two issues that need to be solved. 1) When I try to import the changes into the PCB, I get a "Package Error! Pre OPTO" message, and I cannot for the life me, correct the error. It appears as though the "OPTO" component has a pin labelling issue. I cannot see what the problem is as the pins in the footprint are correctly labelled and assigned, the on-line documentation does not appear to solve the problem. 2) The PCB has several rat lines that are not consistent with the schematic. I really want to rely on the rat line telling me that the PCB matches the Schematic. I think this problem may be resolved once the "Pre" issue has been corrected.