HF is an archaic format for graphics images. Files with this extension most likely contain images that were created and/or edited a very long time ago. HF files are currently obsolete and opening them might be a challenge when you use regular image viewers. For easier storing and transferring, we recommend converting this format to a more accessible one.
JPEG JPG PNG GIF TIFF TIF BMP ICO EMF WMF AI PDF EPS PS EPI WEBP WEBPLL JP2 PCX TGA DWG DWF DXF DGN WMZ CGM DRW GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FITS PSD JXR BPG APNG DDS SVGZ CG4 FLIF