BMP to PNG Converter — Free Online
Free online BMP to PNG converter. Turn bulky BMP files into lossless PNGs that are 5-10× smaller — runs 100% in your browser, no upload.
About BMP to PNG Converter
BMP files are uncompressed and bulky — PNG keeps the same lossless quality at a fraction of the size. This converter turns your BMPs into PNGs entirely in your browser; nothing is uploaded.
How to use BMP to PNG Converter
- Drop one or more BMP files into the upload area.
- Download each PNG file.
Frequently asked questions
Is this BMP to PNG converter really free?
Yes — free with no account, no watermark, and no limits.
Does converting BMP to PNG lose quality?
No. Both BMP and PNG are lossless — the PNG has exactly the same pixels, just compressed much better.
How much smaller will my file get?
Typically 5-10× smaller, depending on the image content.
Are my files uploaded to a server?
No. All processing happens locally in your browser. Your files never leave your computer — close the tab and nothing remains.
Related tools
AI Image Detector
Check whether an image was generated by AI (Midjourney, DALL·E, Stable Diffusion…) using a neural detector plus metadata forensics — all locally.
runs locallyAVIF to JPG Converter
Convert AVIF images to JPG online for free, even if your browser can't open AVIF.
runs locallyAVIF to PNG Converter
Convert AVIF images to lossless PNG online for free, preserving transparency.
runs locallyBackground Remover
Remove the background from any photo with an AI that runs entirely in your browser.
runs locallyBarcode Generator
Generate Code 128, EAN-13, or UPC-A barcodes from text or digits and download them as PNG.
runs locallyBarcode & QR Scanner
Read QR codes and barcodes (EAN, UPC, Code 128, and more) from image files — entirely in your browser.
runs locally