Hi @ChingSong Lim ,
You can map your network drive. This will enable you to drag-and-drop files into the Master Page Gallery with Windows Explorer.
How to map your network drive:
- From Settings menu, select Design Manager.
- On the Design Manager Welcome page, select 3. Upload Design Files.
- On the Upload Design Files page, copy the URL to your design files. Note The next steps will vary, depending on your computer's operating system. This example shows how to map a network drive on a computer that is running Windows 8.x.
- Open Windows Explorer. Right-click Network, and then select Map network drive.
- In the Folder field, paste the URL that you copied in step 3, and then select Finish.
- An explorer window with your Master Page Gallery content opens.
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