Convert OTB FONT to CFF

The OTB file extension, standing for "OpenType Bitmap", is a specialized format used in X11 for bitmap-only font files. It is a variant of the SFNT (scalable font) file format, tailored to store bitmap representations of fonts without vector outlines. Historically, OTB was developed to support the efficient rendering of fonts on systems with limited resources, ensuring the high-quality display of text. This format is particularly useful in environments where rendering performance is critical, such as older display systems or embedded systems.

CFF, or Compact Font Format, is a file extension used in computer technology for efficient storage of font data. CFF was developed as part of Adobe's PostScript technology to streamline font file sizes while maintaining high-quality vector graphics. Its primary use is in embedded systems, print, and digital media, providing a compact and versatile format for typefaces. The history of CFF dates back to the early 1990s when it was introduced to address the need for more efficient font management in professional publishing and graphic design environments.