JPG to BMP Converter

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.

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.