How to use the BMP to PNG converter
- Drop your BMP files onto the box above, or click to choose them.
- Conversion to PNG starts automatically, right on your device.
- Download each file, or all of them as a ZIP.
What are BMP and PNG files?
BMP · Windows Bitmap
BMP is an old, uncompressed Windows image format. Files are huge for what they contain, so converting to JPG or PNG usually cuts the size dramatically.
PNG · Portable Network Graphics
PNG is a lossless image format with full transparency support. It's great for screenshots, logos and graphics, but photos saved as PNG are usually much larger than JPG.
Common questions about the BMP to PNG converter
Are my files uploaded to a server?
No. uqln runs the conversion inside your browser using JavaScript and WebAssembly. Your files never leave your device, which also means there's no upload wait and no size limit beyond your device's memory.
Is it really free?
Yes. There's no account, no watermark and no daily limit. Because the work happens on your device, it costs us almost nothing to run.
Can I convert many BMP files at once?
Yes. Drop as many files as you like. They're converted one after another, and you can download them individually or all together as a ZIP.