BMP to PNG Converter
Drop your BMP images here
Convert BMP to PNG — free, instant, no upload
How to Convert BMP to PNG
Click Browse Files or drag & drop your BMP images onto the converter above. You can select multiple files for batch conversion.
Set the compression quality using the slider — higher values preserve more detail, lower values produce smaller files. Optionally enable resizing to change the output dimensions.
Click Convert to PNG and your files will be processed instantly in your browser. Download them individually or all at once.
🔒 All image conversions happen 100% in your browser. Your files are never uploaded to any server — completely private, free, and unlimited.
Why Convert BMP to PNG?
PNG supports transparency, allowing you to place images over any background without a white or colored box around them.
BMP files are extremely large because they're uncompressed. Converting to PNG will dramatically reduce file size.
BMP vs PNG — Format Comparison
| Feature | BMP | PNG |
|---|---|---|
| Full Name | BMP (Bitmap Image File) | PNG (Portable Network Graphics) |
| Compression | Uncompressed / Lossless | Lossless |
| Transparency | ❌ No | ✅ Yes |
| Animation | ❌ No | ❌ No |
| Color Depth | Up to 32-bit | 24-bit or 32-bit (with alpha channel) |
| Best For | Raw image data, Windows system graphics, situations requiring zero compression. | Graphics with transparency, logos, icons, screenshots, text-heavy images, line art. |
About the BMP Format
BMP (Bitmap) is an uncompressed image format native to Windows operating systems. Because it stores raw pixel data without any compression, BMP files are extremely large but preserve every single pixel with absolute fidelity. BMP is rarely used on the web due to its massive file sizes, but it remains relevant in Windows system graphics, legacy software, and scenarios where you need completely uncompressed image data for processing.
The BMP format was introduced by Microsoft in the early days of Windows as the native image format for the operating system. While it has been largely superseded by more efficient formats, it remains supported across virtually all image viewing and editing software.
✅ Advantages
- Zero quality loss — completely uncompressed
- Universal support on Windows systems
- Simple format — easy to read and write programmatically
- No patent or licensing restrictions
❌ Disadvantages
- Extremely large file sizes
- No compression means impractical for web use
- No transparency support
- No animation support
- Inefficient storage compared to PNG or WebP
About the PNG Format
PNG is a lossless image format that preserves every pixel of your image perfectly, no matter how many times you save it. It supports full alpha transparency, making it the go-to choice for logos, icons, and any image that needs to be placed over different backgrounds. PNG files are typically larger than JPEG files for photographs, but they excel at preserving sharp edges, text, and flat-color graphics.
PNG was developed in 1996 as a patent-free replacement for the GIF format. It was designed to improve upon GIF by offering better compression, true color support, and full alpha transparency.
✅ Advantages
- Lossless compression — no quality loss
- Full alpha transparency support
- Perfect for screenshots, logos, and graphics
- Sharp text and edge preservation
❌ Disadvantages
- Larger file sizes than JPEG for photographs
- No animation support (use APNG or GIF instead)
- Overkill for simple photographs where lossy is acceptable
Frequently Asked Questions
Is it free to convert BMP to PNG?
Yes, completely free with no limits. Our converter runs in your browser — no uploads, no registration, no hidden costs.
Will I lose image quality?
PNG uses lossless compression, so your image quality will be perfectly preserved during conversion.
Are my files uploaded to a server?
No. All image conversions happen 100% in your browser using the Canvas API. Your files never leave your device, making this the most private way to convert images.
Can I convert multiple BMP files at once?
Yes! Simply drag and drop multiple files or select them with the file browser. All files will be converted in batch with a single click.
Will my converted image have a transparent background?
If your original BMP image doesn't have transparency data, the converted PNG will have the same background. PNG supports transparency, but you'll need an image editor to make specific areas transparent.