Convert UOT to PNM

The UOT (Uniform Office Document) file extension is used for documents created in the Uniform Office Format (UOF), an open standard developed for Chinese office productivity applications. It uses an XML format to describe the document and is compressed to reduce file size. UOT files can be opened by OpenOffice and its variants. The format is similar to the OASIS OpenDocument format but is not compatible with it.

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.