SXC to PNG Converter

The SXC (StarOffice Calc) format is a legacy XML-based spreadsheet file developed by Sun Microsystems for the StarOffice suite (versions 5.2 through 7.0). It acts as the technical predecessor to the modern OpenDocument (ODS) standard. The format utilizes ZIP compression to encapsulate XML data describing cell values, formulas, and formatting. While largely obsolete following the standardization of ODF in 2005, SXC remains significant in the history of open-source office software development.

Modern native OS support for SXC is non-existent without third-party tools. The most reliable software for opening SXC files is LibreOffice Calc or Apache OpenOffice, both of which maintain backward compatibility with legacy StarOffice formats. Microsoft Excel does not support SXC natively and requires file conversion prior to access.

Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression, created as a patent-free replacement for the Graphics Interchange Format (GIF). Standardized as ISO/IEC 15948:2004, PNG utilizes the DEFLATE compression algorithm (a combination of LZ77 and Huffman coding) and supports palette-based images, grayscale, and full-color non-palette-based RGB/RGBA images. A defining feature is its alpha channel support, allowing for variable transparency levels, unlike the binary transparency of GIF. It does not support animation but offers gamma correction and interlacing via the Adam7 algorithm.

PNG files possess near-universal compatibility across all major operating systems (Windows, macOS, Linux, Android, iOS) and web browsers (Chrome, Firefox, Safari) without requiring additional software. Default image viewers such as Microsoft Photos, Apple Preview, and virtually all graphics editing software including GIMP, Adobe Photoshop, and Paint.NET natively handle the format.