Image Formats Opened by ArchiCAD
All Images (.bmp, .dib, .rle, .jpg, .jpeg, .jpe, .jfif, .gif, .tif, .tiff, .png, .hdr)
Various types of picture files can be opened as model pictures, but they will appear in their own separate windows, not the ArchiCAD main window.
See also Images from QuickTime Formats in the Migration Guide for ArchiCAD 18.