- Extension
- .b2d
- .ico
- Format
- Binary
- Binary
- Category
- CAD
- Raster Image
- Developer
- TopDesign
- Microsoft
- Description
- The b2d file type is a thumbnail associated with TopDesign, a CAD program built for Windows. It is used to save small images of 3D designs and models.
- An ICO file is an image format used to store icons for Windows programs, files, and folders. It contains two bitmaps: 1) the AND bitmap - the image mask (which determines what part of the icon is transparent) and 2) the XOR bitmap - contains the icon which is mapped onto the image mask. ICO files can be modified to create custom icons.
- MIME Type
- image/x-topdesign
- image/x-icon
