How to install the developer version

You can get TrelloExport at https://github.com/trapias/trelloExport
  1. Download source code and unzip in a folder on your device.
  2. Go to chrome://extensions/.
  3. At the top right, turn on Developer mode.
  4. Click Load unpacked.
  5. Find and select the folder where you unzipped TrelloExport.