Convert BMP images to PNG instantly in your browser. The image is re-encoded on your device and never uploaded.
100% private — files are converted in your browser and never uploaded.
Drop a BMP image — it loads locally.
Re-encoded in your browser via the canvas API.
Save the PNG image.
PNG compresses losslessly, so a BMP converted to PNG is pixel-for-pixel identical yet typically 3 to 10 times smaller — more for screenshots and diagrams with flat colour, less for photographs. It is the right conversion when the BMP came from a scanner, a screen capture or a legacy Windows tool and you need to keep it exact.
The conversion happens entirely in your browser; large BMPs are not a problem because there is no upload.
Choose PNG for text, forms, diagrams, logos and anything with sharp edges. Choose BMP to JPG for photographs, where JPEG's lossy compression is invisible and the file ends up several times smaller than even the PNG.
No. The conversion runs entirely in your browser using JavaScript — your file never leaves your device, so it's safe even for sensitive documents.
Yes — completely free, no signup, no watermark, and no daily limits.
Yes. Every pixel is preserved; only the storage method changes. The image will look identical.
The browser has to be able to decode the file. Standard 24- and 32-bit BMPs always work; rare RLE-compressed or unusual bit-depth variants may not.