Here’s a great tip I got from Randy Drisgill at SPTech Con Austin 2015. You can map your masterpage gallery from Windows Explorer to make it very easy to work with SharePoint Branding projects. Here are the steps: Right click on your computer in Windows Explorer and select Map Networked Drive. Paste in the URL to your SharePoint Online Site Collection you’d like to brand. Note: your site collection must be in the Intranet Zone in your Internet Settings from
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