BMP to PNG Converter Online
Convert BMP (Bitmap) images into high-quality PNG files instantly. Preserve image quality, enable transparency when supported, optimize file size, and download PNG images securely with browser-based processing.
Upload BMP Images
Drag & drop BMP files here, or browse files
Supports BMP & DIB formats · Multiple files · Clipboard paste (Ctrl+V)
How to Convert BMP to PNG Online
Convert your BMP images to high-quality PNG files in 5 simple steps.
BMP vs PNG — Format Comparison
Compare the legacy BMP format with the modern PNG format.
| Feature | BMP (Windows Bitmap) | PNG (Portable Network Graphics) |
|---|---|---|
| Compression | None (uncompressed raw pixels) | ✓ Lossless DEFLATE compression |
| Transparency | No native support ✗ | ✓ Full Alpha Channel (256 levels) |
| File Size | Very large (raw data) ✗ | ✓ Significantly smaller (lossless) |
| Quality | ✓ Lossless | ✓ Lossless (pixel-perfect) |
| Web Compatibility | Poor (not recommended for web) ✗ | ✓ Excellent (universal web standard) |
| Printing | Supported (RGB only) | ✓ Excellent (supports high DPI metadata) |
| Editing | Supported | ✓ Universal design industry standard |
| Browser Support | ✓ Supported by all browsers | ✓ Supported by all browsers |
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Frequently Asked Questions
Everything you need to know about converting BMP to PNG.
BMP to PNG conversion transforms uncompressed Windows Bitmap (BMP) images into Portable Network Graphics (PNG) format. Since PNG uses lossless DEFLATE compression, it significantly reduces file size while preserving 100% of the pixel quality, color data, and supporting transparency metadata.
Yes! PNG is a lossless format, meaning it preserves every single pixel of the original image without introducing compression artifacts, blurring, or noise. It is the perfect choice for logos, text, screenshots, and illustrations.
Yes. You can drag & drop or select multiple BMP or DIB images at once for concurrent batch conversion. All completed files can be downloaded individually or packaged together in a single ZIP archive.
No. All conversions happen entirely in your browser using local client-side Javascript and Canvas APIs. Your files never leave your device, ensuring total privacy.
BMP is typically uncompressed, saving raw pixel values which leads to large file sizes. PNG uses DEFLATE compression, which matches repetitive color patterns to reduce size while remaining 100% lossless.
All modern browsers including Google Chrome, Mozilla Firefox, Microsoft Edge, Apple Safari, and Opera natively support browser-side BMP to PNG conversions.