JPG → BMP
Convert JPG images to BMP – locally in your browser
Why JPG → BMP?
Convert JPG images to BMP – uncompressed and lossless. Directly in your browser.
Frequently Asked Questions
What is BMP?
BMP is an uncompressed image format from Windows. Files are large but lossless.
Are my images safe?
Yes, conversion happens entirely in your browser.
About BMP
BMP (Bitmap) is the native image format of Windows, introduced in 1990 with Windows 3.0 as part of the GDI interface. BMP stores pixel data uncompressed or with simple RLE compression and supports color depths from 1 to 32 bits per pixel, with 24-bit RGB being the most common standard. The lack of efficient compression results in very large file sizes - an uncompressed 10-megapixel photo takes up about 30 MB. BMP does not support transparency, metadata, or animation, making it completely unsuitable for web use. The format is rarely used actively today but remains prevalent as an uncompressed intermediate format in Windows applications and embedded systems where simplicity is prioritized. The structure is straightforward - a header followed by raw pixel data - making BMP easy to read and write, which keeps it useful in image processing education. For all practical purposes, converting to PNG or WebP is recommended to save storage space.
About JPEG
JPEG (Joint Photographic Experts Group) was standardized as ISO 10918 in 1992 and remains the most widely used image format for photographs worldwide. Its lossy compression is based on the discrete cosine transform (DCT) and typically achieves compression ratios of 10:1 to 20:1 with barely perceptible quality loss. The algorithm was developed starting in 1986 by a working group led by Hiroshi Yasuda and quickly became the standard for web images, digital photography, and social media platforms. JPG files support 8-bit color channels in RGB color space and embedded EXIF metadata containing camera settings, GPS data, and timestamps. The format does not support transparency or animation and allows only one color space per image – limitations that are rarely relevant for its primary use as a photo format. With repeated compression, quality degrades progressively due to generation loss, making JPG unsuitable for editing and better suited as a final output format. The .jpg extension instead of .jpeg dates back to the 8.3 character limitation of early Windows file systems. JPEG XL was proposed as a successor in 2021 but has so far failed to gain meaningful market acceptance against WebP and AVIF.
Why convert JPG → BMP?
JPG (JPEG) is the most widely used image format worldwide, supported by virtually every camera, browser, and image app. It uses lossy DCT compression that degrades quality with each save and doesn't support transparency. Converting to BMP is required when you need lossless compression (PNG for screenshots/graphics), transparency support, or want to use a modern format with better compression like AVIF or WebP. For archiving and professional editing, BMP is often the better choice since it produces no compression artifacts and maintains quality across repeated saves.