Convert JPG to BMP Online — Free
Runs 100% in your browser — your files never leave your device.
Some industrial software, embedded systems, and legacy pipelines want plain uncompressed BMP and nothing else. Converting from JPG is one click: the photo is decoded and written out as a standard 24-bit bitmap, locally in your browser.
How it works
- 1
Drop your JPG file
Drag a JPEG into the box, or click to browse. Nothing is uploaded.
- 2
Convert to BMP
The photo is decoded and written as an uncompressed 24-bit bitmap.
- 3
Download the result
Save the BMP with one click, or drop another file to convert it.
About this tool
Converting JPG to BMP
A JPG file jpg trades detail for small files with lossy compression, and carries no transparency. BMP bmp stores pixels essentially uncompressed — enormous files, zero quality loss, and roots deep in legacy windows software that only accepts it.. Converting moves your image from the first set of trade-offs to the second: expect the file to grow substantially, transparency survives where supported, and pixel data is re-mapped to the target format exactly.
What to check after converting
Open the result and check the two things conversion can change: transparency and size. Transparency is carried over exactly where the target format supports it. Remember the source was already lossy: converting to BMP preserves what arrived, it cannot restore what earlier compression discarded. Your original file stays untouched on your device either way, and the download is a brand-new file.
Frequently asked questions
Will converting to BMP improve the quality?
No conversion improves quality that compression already removed — moving JPG to BMP preserves what arrived and stops further loss, but the artifacts baked into the source stay baked in. The gains are about features: transparency, compatibility, or editing headroom.
Is my image uploaded anywhere?
No — the conversion runs entirely in your browser. The image is processed on your device and never sent to any server, which you can verify by disconnecting after the page loads.
Why convert JPG to BMP instead of the other way around?
The direction follows what the destination needs: legacy Windows compatibility versus photos and web uploads. Converting back is always available — but each lossy hop re-encodes the image, so keep the highest-quality format as your working copy and convert toward the destination.