ARW to JPG Converter

The ARW (Sony Alpha Raw) format is a proprietary raw image container generated by Sony Alpha, Cyber-shot, and NEX series digital cameras. It adheres to the TIFF (Tag Image File Format) specification, storing unprocessed photodiode data from the image sensor in either uncompressed, lossless compressed, or lossy compressed (11-bit + 7-bit delta) variations. The file encapsulates extensive EXIF metadata, maker notes, and a JPEG preview, requiring specific demosaicing algorithms to interpret the Bayer pattern data for display.

Opening ARW files requires software capable of decoding Sony's proprietary Bayer interpretation. Sony provides the free Imaging Edge Desktop software for native handling. Industry-standard post-production tools such as Adobe Lightroom, Capture One, and DxO PhotoLab offer full support. On Windows, the Microsoft Raw Image Extension allows native viewing in the Photos app, while macOS Preview supports most ARW iterations natively via Apple's Core Image RAW engine.

JPG is functionally identical to the JPEG format, differing only in the file extension length, a legacy constraint from the MS-DOS 8.3 filename limit (which allowed only three characters for extensions). It implements the same ISO/IEC 10918 standard, using lossy compression based on Discrete Cosine Transform (DCT) and Huffman coding to store photorealistic images. The file structure contains markers such as Start of Image (SOI) and End of Image (EOI) and supports color spaces like sRGB and CMYK, making it interchangeable with .jpeg files in all software contexts.

As one of the most ubiquitous file types in computing, JPG files open natively on Windows, macOS, and Linux without external software. Default viewers like Microsoft Photos, Apple Preview, and Linux image viewers handle the format automatically. For editing or conversion, industry-standard tools including Adobe Photoshop, Paint.NET, and XnView provide extensive support. Web browsers universally render JPGs without plugins.