OXPS to BMP Converter

The OXPS (Open XML Paper Specification) format is a fixed-layout page description language developed by Microsoft and standardized as ECMA-388. It functions as the non-proprietary successor to the XPS format, utilizing a ZIP archive to contain distinct XML markup for page content, document relationships, and embedded resources like fonts and images. Unlike reflowable document formats, OXPS describes the exact placement of text and vector graphics for device-independent printing and viewing.

Windows operating systems (Windows 8 and later) provide the native 'XPS Viewer' application for decoding OXPS files. On macOS and Linux, native kernel support is absent; users must rely on third-party conversion tools (such as NiXPS) or convert the file to PDF using command-line utilities. It is notable that the legacy XPS Viewer on older Windows systems cannot open OXPS files without a dedicated converter from Microsoft.

The BMP (Bitmap) format, formally known as the Device Independent Bitmap (DIB) file format, is a raster graphics standard developed by Microsoft for the Windows operating system. The file structure consists of a file header (BITMAPFILEHEADER), an information header (typically BITMAPINFOHEADER), a color table, and the pixel array. Data is stored as a grid of pixels with color depths ranging from 1-bit to 32-bit, typically uncompressed, though the format supports lossless Run-Length Encoding (RLE4 or RLE8) and Huffman 1D compression for specific bit depths.

Due to its simplicity and documentation as a core Windows standard, BMP files possess near-universal compatibility. They can be opened natively by virtually all image viewers and web browsers across Windows, macOS, and Linux without additional software. Standard utilities include Microsoft Paint, Apple Preview, and Windows Photos. For advanced manipulation, pixel-based editors like Adobe Photoshop and CorelDRAW are recommended, though the format is rarely used for complex editing due to its large file size.