Search for a service specifically supporting files (like DWF) rather than raster images (JPG). Good options include Aspose, Conholdate, GroupDocs, or AConvert .
Merging DWF (Design Web Format) files online is typically done by converting them to a common format like PDF first or by using desktop-based viewers that support drag-and-drop merging. Because DWF is a proprietary Autodesk format, native online "merging" tools are limited compared to standard document formats. Online Merging Options merge dwf files online
Merging DWF files can be useful in several scenarios: Search for a service specifically supporting files (like
: The official free software from Autodesk. You can merge files by simply dragging and dropping them into the "List View" palette. merge dwf files online