Convert OTB to HRZ
Convert OTB images to HRZ format, edit and optimize images online and free.
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The OTB (Over The Air Bitmap) file extension, developed by Nokia, is used for transmitting black and white bitmap images between mobile phones, particularly Nokia and Siemens models. These images, with a maximum resolution of 255x255 pixels, are often sent via SMS in either hexadecimal text or binary format. Historically, OTB files were popular in the early days of mobile communication for sending simple graphics, icons, and wallpapers when data transmission speeds were limited.
The HRZ file extension is associated with Slow Scan Television (SSTV), a method used by amateur radio operators to transmit still images via radio waves. HRZ files store images rendered from SSTV audio signals, typically as 256x240 pixel RGB bitmaps. These files can be viewed using software like XnViewMP or Logipole Konverter. SSTV allows for the transmission of images over high-frequency bands using single-sideband modulation (SSB). The HRZ format is not widely produced by specific programs, but several image viewers support it.
Choose the OTB image you want to convert by browsing your device.
Finalize the OTB to HRZ conversion by applying tools and clicking Convert.
Give the converter a few seconds, then download your HRZ file.
Prepare Vertopal CLI to process OTB image and deliver HRZ image.
cd to the OTB folder or include the path.