Convert OTB to G3
Convert OTB images to G3 format, edit and optimize images online and free.
Drop Files Anywhere to Upload
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 G3 file extension refers to the CCITT Group 3 Fax Image, a standardized format developed by the Consultative Committee for International Telegraphy and Telephony (CCITT), now known as ITU-T. This format was created to efficiently compress black-and-white fax documents for transmission over telephone lines. It employs a method called Modified Huffman Coding for data compression, enabling reduced transmission time and bandwidth usage. G3 was widely adopted in the 1980s and 1990s as the primary standard for fax transmissions, ensuring compatibility across different fax machines and systems.
Choose a OTB image and upload it to the converter.
Finalize the OTB to G3 conversion by applying tools and clicking Convert.
Give the converter a few seconds, then download your G3 file.
To change OTB format to G3, upload your OTB file to proceed to the preview page. Use any available tools if you want to edit and manipulate your OTB file. Click on the convert button and wait for the convert to complete. Download the converted G3 file afterward.
With Vertopal CLI installed, you can convert OTB image directly into G3 image.
cd to the OTB folder or include the path.