Image converter
BMP to PNG Converter
Convert bulky BMP bitmaps to PNG for much smaller files with exactly the same image quality.
Larger images are scaled down; smaller ones are left as they are.
What happens when you convert BMP to PNG
BMP is usually uncompressed; PNG compresses without losing anything, so files shrink a lot while the image stays identical.
PNG is supported by every modern app, website and device.
BMP vs PNG
| Format | Transparency | Compression | Animation | Best for |
|---|---|---|---|---|
| BMP | No | Lossless | No | Legacy Windows software; uncompressed, so files are very large. |
| PNG | Yes | Lossless | No | Logos, screenshots, graphics with text, and anything needing a transparent background. |
When to convert BMP to PNG
- Old scans, screenshots or exports from legacy software saved as BMP.
- Uploading images where BMP is not accepted.
- Saving storage space without any quality loss.
Tips for the best result
- For photographs, BMP to JPG gives an even smaller file if a little quality loss is acceptable.
- Convert a whole folder at once and download the ZIP.
Frequently asked questions
Does BMP to PNG lose quality?
No. PNG compression is lossless.
How much smaller will the files be?
Often dramatically smaller, because most BMPs are stored uncompressed. The tool shows the exact size change.
Can I convert several BMP files?
Yes, add them all and download them as a ZIP.
Is anything uploaded?
No. Conversion runs on your device.
Last reviewed 2 October 2026. This converter runs in your browser; your images are never uploaded or stored.