Turn huge uncompressed BMP bitmaps — old scans, Paint exports, legacy screenshots — into compact, shareable JPGs. All on your device, nothing uploaded.
How it works
Convert a whole batch to JPG without sending anything to a server.
01
Pick a file or drag it straight in — drop in .bmp bitmaps — old scans welcome.
02
Slide between smaller and sharper. 80 is a great default for most photos.
03
It saves straight to your device the moment it’s ready — no upload, no waiting.
Why JPG
Learn
BMP is Windows’ original bitmap format: every pixel stored raw, no compression at all. It is why a single scanned document or an old MS Paint file can weigh 20–30 MB. Those files are painful to e-mail, sync, or upload — and almost nothing on a phone opens them gracefully.
Converting to JPG shrinks them by 90% or more while keeping the visible quality, and produces a file every device on earth understands.
The classic use case is a folder of old scans — family photos, documents, receipts — produced by a legacy scanner as BMP. Drop the whole folder here: each file converts locally with its own progress, and originals are never modified. At the default quality of 90, scanned photos keep their detail; push to 100 if you are archiving and want maximum fidelity.
Because conversion is entirely in-browser, this is also the safe route for sensitive documents: nothing is uploaded anywhere.
FAQ
BMP stores every pixel uncompressed — a 10-megapixel scan is ~30 MB regardless of content. JPG compresses the same image to a small fraction of that.
At the default quality of 90 the difference is invisible for scans and photos, while the file becomes dramatically smaller. Raise it to 100 for archival copies.
Mostly older Windows software: MS Paint, legacy scanners, screenshot tools, and industrial or medical systems that export uncompressed bitmaps.
Yes. The conversion runs in your browser only — no uploads, no server-side copies, nothing to leak.
JPG is lossy, but at quality 90 the difference from the uncompressed BMP is invisible for photos and scans — while the file becomes a tiny fraction of the size.
Sharp black-on-white content shows JPG artifacts soonest. Use quality 95–100 for documents, or convert to PNG for a perfectly clean lossless copy.
More tools