Getting a BMP down to a sendable size
BMP files carry every pixel uncompressed, so they run to tens of megabytes for an ordinary photo. Email attachments bounce, upload forms refuse them, and messaging apps convert them behind your back. Converting to JPG usually cuts the file to a few percent of what it was.
Drop your .bmp files, pick a quality, and download the JPGs. The encoding runs in your browser, so nothing is uploaded.
When JPG is the right destination
- A photo that has to travel. Email, forms, marketplaces and support tickets all take JPG.
- An old scanner or camera dumped BMPs and you need something a phone will open.
- Storage is filling up with raw bitmaps from a capture tool.
- The receiving system lists .jpg as an accepted format and stops there.
Where JPG is the wrong destination
JPEG was designed for photographs. Feed it a screenshot, a diagram, a logo or anything with small text and you will see halos around the edges, worst at the lower quality settings. Convert that kind of image to PNG instead: still much smaller than the BMP, and every letter stays sharp.
Transparency also disappears. A 32-bit BMP that carries an alpha channel gets flattened onto white before encoding, because JPEG has no way to store it.
Frequently asked questions
Does my file leave the device?
No. Your browser handles the decode and the encode. The tool keeps working with the network switched off.
Which quality should I choose?
High for photos you care about. Medium when a size limit is the reason you are here. Small file is a last resort, and the artifacts are visible.
How much smaller does the file get?
Photos routinely drop below five percent of the BMP. The exact numbers appear beside each download, before and after.
Will I lose detail?
Yes, some. JPEG discards information to reach those sizes. Keep the BMP if it is your only copy of something irreplaceable.
Can I convert a folder of bitmaps in one pass?
Drop them all at once, convert, then download individually or as a zip.
What about a BMP with a transparent background?
It comes out on white. Use the BMP to PNG converter to keep the transparency.