Convert BMP to JPG

For a photograph or a scan, JPG is what BMP should have been all along: a twenty-megabyte bitmap becomes a one-megabyte file that looks the same on every screen it will ever meet. The trade is real — JPG is lossy — but for photographic content it is the right trade, and this page makes it at high quality rather than the crunchy default some tools use.

  1. Your BMP files

    Drop your BMP files here

    BMPJPGPNGWebP

    Your files are never uploaded.

  2. What you want back

  3. Your files

How to convert BMP to JPG

  1. Add your BMP files

    Scans, photos, screenshots. They are read by your browser and never uploaded.

  2. Leave it on JPG

    High-quality encode. For diagrams and text, PNG is one click away and the better choice.

  3. Save the JPGs

    Individually, or the batch as a zip.

What you get

The dramatic version of smaller

PNG halves a photographic BMP; JPG divides it by twenty. For the folder of scanned photos that has been squatting on a disk since the flatbed era, this is the conversion that actually frees the space.

High quality, not the crunchy default

The encode runs at high quality, where JPG's artefacts stay out of sight in photographic content. The goal is the small file that looks like the original — not the smallest possible file that almost does.

Knows when it is the wrong tool

Text, line art and flat-colour diagrams are JPG's worst case: edges ring, flat areas speckle. For those, PNG on this same page is smaller than you expect and pixel-perfect — and the FAQ says so rather than hiding it.

Scans stay private

Old family photos and scanned documents are exactly the files not to push through an unknown server. The conversion happens in this page; your files are never uploaded.

Questions about BMP and JPG

Will the JPG look worse than the BMP?
For photographs and scans, not visibly — the encode runs at a quality where artefacts hide in photographic detail. For sharp-edged content like text or diagrams, yes, JPG will fuzz the edges; use PNG for those. The honest rule: photos to JPG, graphics to PNG.
How much smaller does it get?
Photographic BMPs typically shrink by a factor of fifteen to twenty-five. A 24 MB scan lands around a megabyte. The exact number depends on how much fine detail the image carries — noise and grain cost bytes in any lossy format.
Can I convert back to BMP later?
You can wrap the pixels back in a BMP with any editor, but the JPG's compression is permanent — what its encoder discarded does not return. If you might need the exact original pixels again, convert to PNG instead, or keep the BMP.
Should old scans be JPG or PNG?
If they are photographs and the goal is storage, JPG at high quality is the practical answer — the losses are invisible and the savings are huge. If they are documents you may re-process — OCR, restoration — PNG preserves every pixel for the tools that come later.
Is it free, and is my file uploaded?
Free, no account, no limit. Everything runs in your browser. Your files are never uploaded.

If the result needs to fit under an upload limit, resize it to a size in KB. Photos from an iPhone rather than the web? That is HEIC to JPG. Or see the rest of the image tools.