The BMX image format is associated with Siemens mobile phone animations. In case you found such a file it was probably created a long time ago, as Siemens mobile phone division was sold to BenQ in 2005 and such files are no longer supported. Opening a BMX image may require conversion to a more accessible format.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple BMX files as once.
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 SHP GBR PCT MIF PLT PCL SVG WPG CIN DCX DIS HRU MTV PRC RAD PIC RLA QRT SGI XBM XPM SWF CAL FAX FITS PSD PGM JXR BPG APNG DDS SVGZ CG4 FLIF AVIF
Advanced users can convert BMX files via command-line interface in manual or automated mode. You are welcome to contact our technical support when you have any questions about reaConverter.