BMP (Bitmap) is an uncompressed image format from early Windows that creates very large files. PNG offers lossless compression, reducing file sizes by 50-70% while maintaining identical quality. PNG is the modern replacement for BMP.

No, absolutely zero quality loss. PNG uses lossless compression, meaning the image data remains pixel-perfect identical to the original BMP. You get smaller files with the exact same visual quality.

Typically 50-70% smaller. A 10MB BMP might become 3-5MB as PNG. Compression efficiency depends on image content—simple graphics compress more than complex photos, but all see significant reduction.

Use PNG for screenshots, graphics, text, logos, or any image where perfect quality matters. PNG's lossless compression preserves every detail. Use JPG only for photographs where some quality loss is acceptable for smaller sizes.

PNG supports transparency far better than BMP. PNG has full alpha channel support (256 levels of transparency), while BMP transparency support is limited and rarely used. Transparent areas convert perfectly.

Yes. Select or drag multiple BMP files to convert them all in batch. Download each PNG individually or get all as a ZIP archive for convenience.

PNG offers compression (smaller files), better transparency support, wider platform compatibility, and is web-friendly. BMP is obsolete—it wastes storage space and bandwidth with no quality advantage.

No. All conversions happen locally in your browser using JavaScript. Your BMP files never leave your device, ensuring complete privacy and security.

Yes, and more. PNG is supported by all modern software, browsers, and devices. Some very old legacy software might prefer BMP, but that's extremely rare today.

Yes, PNG converts back to BMP perfectly since both are lossless formats. However, the BMP will be much larger. Most modern workflows never need BMP format anymore.