BMP to PNG converter online
Legacy BMP screenshots and Paint exports can become PNG for easier web sharing. PNG supports lossless palettes though file size may grow versus JPEG for photos.
Why convert BMP to PNG?
BMP stores uncompressed or simple RLE data — great for compatibility but heavy. PNG compresses better for UI captures while staying lossless.
- Web ready: PNG is universally accepted in browsers and chat clients.
- Transparency path: If you add alpha later, PNG is the natural raster container (BMP rarely helps).
- Lossless: Keep pixel-perfect UI shots without JPEG ringing.
- Browser only: No desktop converter install required.
- Auto cleanup: Converted files are removed automatically after a short window — download promptly.
How to convert
- Choose a BMP file under the published size limit.
- Click Convert and wait for processing.
- Download the PNG output.
BMP vs PNG
BMP is simple but bulky; PNG compresses screenshots more efficiently and is the default for lossless sharing.
For photographic content, consider JPEG or WebP after PNG if you need very small bytes.
Questions Fréquemment Posées
Standard BMP rarely includes meaningful alpha; output PNG preserves opaque pixels faithfully.
Deep color BMPs are flattened to PNG 8/16-bit as supported by the encoder — verify visually for medical or scientific uses.
Same limits as other queue converters — shrink in editor first if uploads fail.
Uncommon; treat as static frame.