BMP to JPG Converter

What happens when you convert BMP to JPG

• The image is decoded and written as a baseline JPEG at 90 percent quality.
• JPG has no transparency, so transparent areas are filled with white.
• BMP is lossless and JPG is not, so the file shrinks a lot, at the cost of some fine detail around sharp edges.

How to convert BMP to JPG online

1. Press "Choose BMP files" and select one or more files, or drag them onto the box. You can add files of any size your device can hold in memory.
2. Adjust the settings if you need to. Lower quality gives a smaller file.
3. Press "Convert to JPG". Images convert in a second or two each.
4. Save each JPG with its download button. Close the tab and every trace of the files is gone from memory.

Why convert BMP to JPG?

BMP files usually come from Windows software, embedded displays and legacy tools. People convert them to JPG because JPG opens everywhere and keeps photos small, which is why upload forms and email favour it.

In short, BMP is good at what it was made for, and JPG is the more practical choice when the file has to open, upload or print somewhere else. BMP opens in browsers and every Windows image tool, while JPG opens in every browser and image viewer.

How to convert BMP to JPG on Windows, Mac, iPhone and Android

On Windows

Open this page in Chrome, Edge or Firefox, drag your BMP files in from File Explorer, and press Convert. Each JPG is saved to your Downloads folder. Paint can also re-save an image as JPG with Save as, provided Windows can open the BMP in the first place.

On a Mac

Safari, Chrome and Firefox all work. Drag the BMP files from Finder onto the drop zone and the JPG files land in Downloads. Preview can do single images too: open the file, choose File, then Export, and pick JPEG.

On iPhone and iPad

Open the page in Safari and tap Choose BMP files. You can pick from Photos or from the Files app. The converted JPG appears in Files, in the Downloads folder; to put it in your photo library, open it there, tap Share and choose Save Image.

On Android

Open the page in Chrome, tap Choose BMP files and pick them from Files or your gallery. The JPG is saved to the Download folder, where any file manager can find it.

Best settings for BMP to JPG

JPG is lossy, so the Quality setting trades file size against detail. Best is 95, High is 90, Medium is 80 and Small file is 65 on the usual 0 to 100 scale. At High the difference from the BMP is invisible for photos; at Small file you may see softness around text and fine patterns.

The Maximum width setting shrinks large images before encoding. A 4000 pixel phone photo reduced to 1920 pixels loses three quarters of its pixels and most of its size, yet still fills a laptop screen.

BMP vs JPG: the differences

About BMP and JPG files

What is a BMP file?

BMP usually stores pixels with no compression at all, so a 12 megapixel photo is about 36 MB. That size is the price of being readable by almost any program ever written for Windows.

What is a JPG file?

JPG discards fine detail the eye is least sensitive to, which is why a photo shrinks to a tenth of its raw size but text and sharp edges pick up blocky artefacts. Every re-save at a lossy setting throws away a little more.

BMP to JPG not working? Common problems

• Colours look slightly different. Browsers convert images to the standard sRGB colour space when they decode them, so wide-gamut and CMYK images can shift a little.
• A phone photo comes out upright even though it looked sideways elsewhere. That is correct: the rotation stored in the photo is applied during conversion, so the JPG is always the right way up.
• Transparent areas turned white. JPG cannot store transparency; convert to PNG or WebP instead if you need it.

Convert BMP to JPG from the command line

If you work in a terminal, ImageMagick converts BMP to JPG in one line:

magick input.bmp -quality 90 output.jpg

To convert every BMP in a folder at once, use magick mogrify -format jpg *.bmp. The converter on this page does the same job without installing anything.