Convert JPG to BMP
Drop JPG files and download them as BMP. Neither format stores transparency. Conversion runs on your device, so large batches finish in seconds and nothing is uploaded.
How to use the JPG to BMP
- Drop or paste your JPG files (up to 200).
- No settings needed: the output is lossless.
- Click Convert to BMP.
- Download each file or all as a ZIP.
Why convert JPG to BMP?
JPEG is the universal photo format: every camera, phone, website and printer handles it. It compresses by discarding fine detail the eye does not notice, and it cannot store transparency.
BMP is the uncompressed Windows bitmap format. Files are very large (3 bytes per pixel) but trivially simple, which is why some legacy software, embedded systems and wallpaper settings still require it.
What changes in the conversion
BMP is lossless, so nothing further is lost in the conversion, but the JPG compression already applied cannot be undone; the BMP file will be much larger without being sharper. Neither format stores transparency.
JPG vs BMP at a glance
| JPG | BMP | |
|---|---|---|
| Compression | lossy | lossless |
| Transparency | no | no |
| Animation | no | no |
| Typical size | small for photos | very large |
| Opens in | everywhere | Windows and most editors |
How it works on your device
Your browser decodes the JPG file into raw pixels, draws them onto a canvas and asks its built-in encoder to write BMP. Nothing is sent to a server, which is why there is no file-size limit beyond your device's memory and no queue.
Need a different pair? See all image converters or use the general converter.
Frequently asked questions
Does converting JPG to BMP lose quality?
BMP is lossless, so nothing further is lost in the conversion, but the JPG compression already applied cannot be undone; the BMP file will be much larger without being sharper..
Is there a limit on file size or number of files?
Up to 200 files per batch and no fixed size limit; processing happens in your browser.
Are my images uploaded?
No. The conversion runs on your device and works offline after the page loads.
Privacy
This tool runs entirely inside your browser using WebAssembly and the Canvas/File APIs. Your files are never uploaded to ToolFlint or any third party; you can verify this in your browser's network tab or by switching to airplane mode after the page loads. Read how we process files.
Last updated 2026-09-23.