BMP files can store both monochrome and color image data in various color/bit depths. Although most BMPs are uncompressed and so are fairly large, they can optionally become smaller through lossless data compression. This format is very common, so common in fact that many seemingly proprietary image formats are actually just renamed BMP files! XBM and its newer XPM format are two image formats that are similar to DIB/BMP.

How to Open a BMP or DIB File

The Device-Independent Bitmap Graphic file format is free from patents, so many programs provide support for opening and writing to the format. This means that most graphics programs like Paint and Photo Viewer in Windows, IrfanView, XnView, GIMP, and more advanced programs like Adobe Photoshop and Corel PaintShop Pro, can all be used to open BMP and DIB files. Apple Preview, Apple Photos, and ColorStrokes can open BMP files on macOS. Considering the very wide support for the BMP/DIB format, you probably already have at least two, maybe several, programs installed that support files that end in one of these extensions. While it’s great to have options, you probably prefer one program in particular for working with these files.

How to Convert a BMP or DIB File

There are lots of free image converter programs that convert BMP files to other image formats like PNG, PDF, JPG, TIF, ICO, etc. You can even do so in your web browser with the online image converters FileZigZag and Zamzar. Some BMP converters may not let you open a file that has the .DIB file extension, in which case you can use alternatives like CoolUtils.com, Online-Utility.org, or Picture Resize Genius. If you’re looking to create a .DIB file by converting a picture into the DIB format, you can do that with the free online AConvert converter.

Still Can’t Open It?

If your file isn’t opening with these image viewers, it’s possible that you’re misreading the file extension. BML (Bean Markup Language), BMF (FloorPlan), DIF (Data Interchange Format), DIZ, DB, and DIC (Dictionary) files share common letters with DIB and BMP files, but that doesn’t mean they can open with the same software.