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Convert to OTB

Convert any image to OTB format, edit and optimize images online and free.

Convert … to OTB
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Over The Air Bitmap Image (.otb)

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.

How to convert to OTB?

  1. Upload File

    Drag & drop or browse your device to select and upload your file.

  2. Select Tools

    Before clicking the Convert button, use any available OTB tools.

  3. Download Your OTB

    Wait a few moments for the converter to complete its job, then download your OTB file.

Convert to OTB

Convert Files on Desktop

macOS
Windows
Linux

Convert to OTB on macOS

Follow steps below if you have installed Vertopal CLI on your macOS system.

  1. Open macOS Terminal.
  2. Either cd to input file location or include path to your input file.
  3. Paste and execute the command below, substituting in your INPUT_FILE name or path. $ vertopal convert INPUT_FILE --to otb

Convert to OTB on Windows

Follow steps below if you have installed Vertopal CLI on your Windows system.

  1. Open Command Prompt or Windows PowerShell.
  2. Either cd to input file location or include path to your input file.
  3. Paste and execute the command below, substituting in your INPUT_FILE name or path. $ vertopal convert INPUT_FILE --to otb

Convert to OTB on Linux

Follow steps below if you have installed Vertopal CLI on your Linux system.

  1. Open Linux Terminal.
  2. Either cd to input file location or include path to your input file.
  3. Paste and execute the command below, substituting in your INPUT_FILE name or path. $ vertopal convert INPUT_FILE --to otb

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