How to Install the SnapEDA Plugin for Eagle
Download Eagle (if necessary)
Upon launching Eagle, you’ll see the Control Panel. Go to File > Open > Scripts > and select eagle.scr.
Copy and paste the following line to the MENU area of both the BRD and SCH sections:
'[bin/snapeda.png] SnapEDA : Run snapeda.ulp;'\
Download the SnapEDA Eagle Plugin (SnapEDA-Eagle-Plugin.zip). Unzip the file and move both snapeda.ulp and json.inc into Documents > eagle > ulps.
Copy snapeda.png from the SnapEDA Eagle-Plugin folder and paste it in the bin folder located inside your Eagle directory (C:\EAGLE 9.x.x\bin).
The SnapEDA plugin is now installed. When you start a new Schematic or Board, you should be able to see the SnapEDA icon in the top menu bar.
Note: If you are using older versions of Eagle,move both snapeda.ulp and json.inc into the ulp folder in the Eagle application directory.