Convert BMP to JPG
The format of Paint and scanner defaults, put on a diet — converted on your own device to a JPG a fraction of the size.
Drop your image here
or
JPG, PNG, WebP, HEIC, SVG — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
BMP is Windows' original bitmap format, and it is essentially uncompressed: every pixel stored raw, which is why a single screenshot or scan can weigh dozens of megabytes. MS Paint, scanner software, and old export tools still produce BMPs — and email, upload forms, and chat apps still choke on them.
For photographic content, converting to high-quality JPG typically shrinks the file by 90% or more with no visible difference. The conversion runs entirely in your browser — the file never uploads — and the result downloads instantly. For graphics with sharp edges and flat colors that must stay pixel-perfect, PNG is the better target and is one click away.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Choose quality or size
Pick a quality preset, set an exact KB target, or switch the output format — tuned for bmp to jpg.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Why are BMP files so enormous?
BMP stores pixels with little or no compression — a 4000×3000 scan is simply width × height × 3 bytes, about 36 MB, regardless of content. Modern formats compress the same picture into a small fraction of that.
How much smaller will my BMP get as a JPG?
Photos and scans typically drop 90–98% — a 36 MB scan becomes one or two megabytes at high quality. Flat-color graphics shrink less dramatically and may soften slightly at sharp edges; keep those as PNG.
Does the conversion change my original BMP?
Never — the tool only reads it and produces a new JPG alongside on your device. Nothing is modified and nothing is uploaded.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.