Convert SFW to OTB
Convert SFW images to OTB format, edit and optimize images online and free.
Drop Files Anywhere to Upload
The SFW file extension stands for Seattle FilmWorks Image, a proprietary bitmap image format created by Seattle FilmWorks, a company specializing in film processing and digital imaging. Although the company is now defunct, SFW files can still be viewed using specific software or converted to standard formats like JPEG. This format is not widely supported by modern image editing software.
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.
Click Choose File to upload a SFW image from your device.
Apply SFW to OTB tools on the preview page and finalize with Convert.
Wait for the converter to finalize, then access your OTB image.
To change SFW format to OTB, upload your SFW file to proceed to the preview page. Use any available tools if you want to edit and manipulate your SFW file. Click on the convert button and wait for the convert to complete. Download the converted OTB file afterward.
Vertopal CLI manages conversion from SFW image into OTB image once installed.