Image tool
BMP to PNG Converter
Convert BMP bitmap images to PNG format with transparency support.
BMP PNG
PrivConvert
Privacy-first conversion
No files stored
In-memory processing
Deleted instantly
No sign-up needed
Complete the security check to begin
Why convert BMP to PNG?
BMP files are uncompressed and can be very large. PNG gives you lossless compression with much smaller file sizes and transparency support - perfect for web use and sharing.
- Smaller files - PNG compresses without losing quality
- Transparency - PNG supports alpha channels, BMP does not
- Web ready - PNG is universally supported on all browsers
Frequently Asked Questions
Why are BMP files so large?
BMP stores raw, uncompressed pixel data with no compression at all. This results in very large files compared to formats like PNG or JPG.
Is there any quality loss converting BMP to PNG?
No. Both BMP and PNG are lossless formats, so the conversion preserves every pixel exactly as it was.
How much smaller will the PNG file be?
PNG uses lossless compression, so the output is typically 50-80% smaller than the original BMP file with zero quality loss.
Does PNG support transparency unlike BMP?
Yes, PNG supports full alpha transparency while BMP does not, giving you more flexibility for editing and web use.
Is this tool really free?
Yes, completely free with no hidden fees, no watermarks, and no sign-up required. You can convert as many files as you need.
Are my files private and secure?
Absolutely. Every conversion runs in an isolated, in-memory process. Your files never touch the disk, are never stored or shared, and are deleted from memory the moment your download is ready.