Convert OTB files online for free
The converter easily converts your OTB file to various formats - free and online. No Photoshop or extra software needed.
The converter also works in reverse, so you can convert other Game formats to OTB with high quality output.
The .OTB extension primarily refers to the Open Tibia Binary file, a critical data asset for Open Tibia Servers (OTS) that defines item attributes like weight, defense, and attack values. Because these files store data in a compiled binary format, they are not human-readable and cannot be edited with standard text editors like Notepad++. Server administrators often face friction here: attempting to edit raw .OTB files leads to corruption or server crashes due to strict protocol versioning (e.g., mixing Client 8.60 data with 10.98 servers). To modify game items, you must typically convert the .OTB to XML, edit the tags, and re-compile it - or use specialized tools like an OTB Item Editor.
Alternatively, an .OTB file may be a legacy Nokia Over-the-Air Bitmap, a monochrome image format once used for picture messages and operator logos on older Nokia phones. These files are functionally obsolete on modern operating systems; neither Microsoft Photos nor macOS Preview can natively display them. They are often tiny (e.g., 72x14 pixels) and locked to a 1-bit color depth. To view or archive these graphics, users must convert them to standard raster formats like PNG or JPG. Whether you are managing game server assets or recovering vintage mobile art, convert.guru handles the parsing to ensure your data is usable in modern workflows.
Use Convert.Guru to open and convert your OTB file.
Users also converted MPH, HED and GED files.
If you want to convert OTB file to CUR, you can use OpenTibia Server or similar software from the "Game Item Definitions" category. In the File menu, look for Save As… or Export….
To convert files to OTB, try OpenTibia Server or another comparable tool in the "Game Item Definitions" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our OTB converter.