Convert ORA to PPM

The ORA file extension stands for OpenRaster Image File, a format designed for the exchange of layered raster graphics between different software applications. Proposed in 2006 by developers from KDE and Krita, OpenRaster aims to provide an open alternative to proprietary formats like Adobe's PSD. The format encapsulates image layers, blending modes, and metadata within a ZIP archive containing XML and PNG files. Its primary use is to facilitate interoperability among various graphic editors, ensuring that complex image data can be shared and edited across different platforms.

The Portable Pixmap (PPM) file extension, an image format within the Netpbm family, stores simple, uncompressed images. Introduced in the late 1980s, PPM supports RGB color and grayscale images, making it suitable for basic image processing and conversion tasks. Its plain text encoding simplifies debugging and data manipulation, although its lack of compression results in larger file sizes compared to modern formats. As such, PPM finds limited use in contemporary applications, mainly in educational and experimental settings where ease of implementation and readability are prioritized.