.HP1

.HP1 file extension

This is the basic program to work with .HP1 extension

ABViewer

ABViewer Viewer for CAD and raster formats

ABViewer enables you to view, edit, convert, measure, and print DWG and other CAD files, as well as 3D models and raster images. You can open a drawing in this program and work with its various layers, blocks, dimensions, text styles, snap, etc. ABViewer has supports for a variety of file formats including DXF, DWF, HPGL, IGES, STEP, PDF, 3DS and STL... (more)

The program works with the following extensions: wmf, dwt, psd, bw, hg, psp, rgb, vst, rtl, rla, cel, rpf, svg, sgi, eps, cal, icb, fax, vda, ged, pbm, hgl, pcd, hpg, dib, pcx, prn, dwg, pdd, pal, gl2, dxf, cut, emf, pgm, hp1, ppm, hp2, rgba and hpgl2