About the BMP to PNG Converter
The BMP to PNG Converter turns Bitmap (BMP) images into Portable Network Graphics (PNG) files right inside your web browser. Convert BMP to PNG to get much smaller files with exactly the same lossless quality.
BMP is an uncompressed Windows bitmap format. It keeps full quality but produces very large files, and it is rarely accepted by websites or social networks.
PNG is a lossless format that preserves every pixel exactly and supports full transparency. It is ideal for logos, icons, screenshots, illustrations and images with text, although photos saved as PNG are usually much larger than JPG.
PNG is lossless, so the converted file keeps every pixel of the decoded BMP image without adding any new compression artifacts. BMP images have no transparency, so the result looks exactly like the original. You can convert dozens of images at once, optionally limit the maximum width to shrink large photos, and download everything as a single ZIP file. Because the conversion runs locally on your device, your pictures are never uploaded to a server.
How to use the BMP to PNG Converter
- Drop your BMP files into the upload area, click to browse, or paste an image.
- Adjust the quality or maximum width if needed.
- Wait a moment while each image is converted to PNG on your device.
- Download files individually or click Download all (ZIP).
Frequently asked questions
Will converting BMP to PNG reduce quality?
PNG is lossless, so the converted file keeps every pixel of the decoded BMP image without adding any new compression artifacts.
What happens to transparent backgrounds?
BMP images have no transparency, so the result looks exactly like the original.
Can I convert many images at once?
Yes. Add as many files as you want; they are converted one after another and can be downloaded together as a ZIP archive.
Are my images uploaded?
No. Conversion happens entirely in your browser using the HTML5 canvas, so your files never leave your device.