How to convert PNG to BMP
- Drag your PNG files into the box above or click “Choose files” (folders and pasting from the clipboard work too).
- BMP is preselected as the output format; adjust quality, size and target file size if you like.
- Press “Start converting”; files are converted in your browser, in parallel.
- Download the files one by one or grab them all as a ZIP.
Why convert PNG to BMP?
BMP can be required by legacy software and devices that expect uncompressed pixel data.
If a PNG has transparency it is kept when the target format supports it; otherwise the background colour you pick is used.
PNG may contain transparency; because BMP does not support it, transparent areas are filled with the background colour you choose (white by default).
PNG vs BMP
| PNG | BMP | |
|---|---|---|
| File extension | .png | .bmp |
| Compression | Lossless | Uncompressed |
| Transparency | Yes | No |
| Animation | No | No |
| Typical file size | Large (for photos) | Very large |
| Support | Everywhere | Windows and most software |
| Best for | logos, screenshots, icons, graphics with transparent backgrounds | compatibility with legacy software, uncompressed raw pixels |
PNG is a lossless format with full transparency (an alpha channel). BMP is the native Windows bitmap format and usually uses no compression. Files are very large and impractical on the web.
Tips for the best results
- BMP is uncompressed, so output files are large; use it only when you really need it.
- For the web, limiting the width to 1600 pixels cuts file size a lot while keeping visual quality (Resize section).
- Metadata such as GPS location and camera details (EXIF) is always removed from the output.
Privacy and security
Conversion runs entirely in your browser (using WebAssembly); your images are never uploaded to our server and never leave your device. The server only receives anonymous counters that contain no file names or content (source/target format, size, duration). Metadata such as location and camera details is always stripped from the output.