How to convert BMP to DDS
- Add your .BMP file - drop it in the box above or click to browse.
- Convert it to .DDS in a few seconds.
- Download your new .DDS file.
What to expect
- Uncompressed DDS is lossless; block-compressed DDS (DXT/BC) is a lossy re-encode with possible artifacts.
- Mipmaps and compression are DDS features BMP lacks, so they are generated by the conversion rather than carried from the source.
- BMP transparency support is limited, so an alpha channel in the DDS only reflects what the source actually contained.
Frequently asked questions
Is quality lost converting BMP to DDS?
It depends on the DDS compression used. Stored uncompressed, DDS keeps the BMP pixels exactly; saved with block compression (such as BC/DXT), it becomes lossy and can show artifacts, especially on gradients and sharp edges.
Why convert BMP to DDS?
DDS is the texture format DirectX games expect, supporting GPU block compression and mipmaps that a plain BMP has no concept of. Converting prepares an image for use as a game or engine texture.
Where does the DDS open?
DDS is read by free tools like XnView MP and IrfanView, and edited in Paint.NET or GIMP. It is primarily a DirectX/game-engine texture container rather than a general-purpose viewer format.
What does DDS add that BMP lacks?
DDS can store mipmaps and an alpha channel and use block compression; BMP is a simple, usually uncompressed image with no mipmaps. Whether those extras appear depends on the conversion settings, since BMP provides no mip or compression data itself.
