BMP (bitmap) is an uncompressed raster format that stores every pixel directly. While it produces large files, BMP is still required by certain legacy Windows applications, embedded systems, and specialized tools that expect raw, uncompressed image data. Converting JPG to BMP gives you a simple, lossless-from-this-point file that these programs can read reliably.
Because BMP does not apply compression, there is no further quality loss after conversion, and the data is stored in a straightforward, predictable layout. This makes BMP useful for image processing pipelines, certain printing workflows, and software that cannot open modern compressed formats.
FreeConvertImg converts JPG to BMP locally in your browser. The conversion is instant and private, with no uploads. Convert one image or a batch, and download each BMP or all of them as a ZIP.
Frequently Asked Questions
Why is the BMP file so large?
BMP is uncompressed, so it stores every pixel directly. This makes files much larger than the original JPG.
Does converting to BMP improve quality?
No. It cannot recover detail JPG already removed, but it prevents any further compression loss.
Is the conversion private?
Yes. Everything runs in your browser, so your images are never uploaded.