BMP to JPG

From uncompressed to something you can actually send.

Drop images here

JPG, PNG, WebP, AVIF, GIF, BMP. Paste works too.

Choose images

Stays on your device. Nothing is uploaded.

BMP stores every pixel raw with no compression at all, which is why a modest image can run to tens of megabytes. Converting to JPG typically cuts it by well over ninety percent with no visible difference, and produces a file that email and upload forms will actually accept.

Good for

Scans and screenshots saved as BMP
Output from older Windows software
Files far too large to email
Anything from a scanner set to bitmap

Questions

Why are BMP files so enormous?

They are uncompressed. Every pixel is written out in full, so the size depends only on the dimensions, never on the content.

How much smaller will the JPG be?

Usually more than ninety percent. The saving is so large because the starting file had no compression at all.

Should I use PNG instead?

If the image is a screenshot, a diagram or anything with sharp text, yes. PNG is lossless and handles hard edges far better than JPG.

Also here: Convert Image. Related: PNG to JPG, JPG to PNG, PNG to WebP, JPG to WebP.