A DWT file is a template used to create multiple webpages in Dreamweaver, a popular web development program. It contains a webpage with editable regions defined by the user and non-editable regions that affect all pages designed from the template.

DWT file open in Adobe Dreamweaver 2020 DWT files are helpful to developers because they allow them to save time and work by only having to make an edit once to be reflected on the other pages. The editable regions designated in a template are the areas that you want to be edited individually on webpages that won't affect other webpages that come from the template. The non-editable regions are the areas you want to remain the same on all the pages such as menus, navigation bars, logos, and footers. You can save a web page as a DWT template by selecting File → Save as Template.... When you create the DWT file, a folder named "Templates" will be created in your website folder and the DWT file will be placed in it. NOTE: Dreamweaver was originally developed by Macromedia. Adobe acquired Macromedia in 2005 and the program is now developed and distributed by Adobe.