BMP to PNG

Decode an uncompressed BMP and export a PNG.

Local processing · Nothing is uploaded · 20 MB / 4 megapixel limit

Input & settings

Result

Open an image to begin.

How to use

Choose a Windows BMP using an uncompressed 24-bit or 32-bit BITMAPINFOHEADER.

Limits and behavior

Palette BMPs, compressed BMPs and other DIB header variants are rejected. Uncompressed 32-bit BMP is treated as opaque BGRX. Still PNG, JPEG and WebP only; 20 MB, 4 megapixels and 4,096 pixels per side. Processing stays on your device. Exports apply orientation and discard source metadata. PNG output preserves transparency unless the selected operation composites it.

Convert bitmap BMP files to PNG

Turn supported uncompressed bitmap pictures into PNG images for broad compatibility.

Does converting BMP to PNG improve image detail?

No. File-format conversion does not create new pixels or restore quality.

Related tools: tiff to jpg · gif to png