BMP to JPG
Convert BMP images to JPG – saves space
Why BMP → JPG?
BMP files are often unnecessarily large and are not well supported by many modern applications. Convert them to JPG and save up to 90% storage space.
Frequently Asked Questions
What is a BMP file?
BMP (Bitmap) is an older, uncompressed image format from Microsoft. BMP files are very large because each pixel is stored individually.
Why convert BMP to JPG?
JPG uses efficient compression and is up to 90% smaller than BMP with nearly identical visual quality. JPG is also universally supported.
Can I adjust the JPG output quality?
The converter uses a high quality setting (92%), which offers a good compromise between file size and image quality.
Are my images safe?
Yes, the conversion runs entirely locally in your browser. Your BMP files are never uploaded to a server.
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.
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.
Why convert BMP → JPG?
BMP (Bitmap) is an uncompressed raster format from the early Windows era. It stores pixel data without any compression, resulting in enormous file sizes — a typical 12-megapixel photo as BMP exceeds 36 MB. BMP supports no metadata, no transparency, and offers no advantages over modern formats except simple readability. Converting to JPG reduces file size by 80-95%, makes images usable for web, email, and mobile applications, and adds metadata support. BMP should only be used for legacy systems — for everything else, JPG is the better choice.