Convert BMP images to compressed PNG format for free. Dramatically reduce file size.
Upload BMP Files
Select BMP files to convert to PNG
Supported formats: BMP
Paste (Ctrl/⌘+V) or drop an image — or import from a URL
BMP to PNG Features
• Lossless quality maintains original image quality
• Massive file size reduction
• Full transparency support
• Batch conversion of multiple files
BMP was designed for raw pixel storage, not sharing — an uncompressed bitmap can be 10× larger than an equivalent PNG. Image Machine converts BMP to PNG directly in your browser, cutting file size dramatically while keeping every pixel lossless and preserving any transparency, making it the right choice for logos, icons, and graphics you still want to edit.
How It Works
Choose a tool
Pick from 120+ tools to resize, convert, compress, or enhance your image.
Upload & edit
Drag and drop your image and adjust the settings. It stays on your device.
Download
Save your result instantly — no watermark, no sign-up required.
Why Image Machine?
Your files never leave your device
All processing runs locally in your browser. Your images are never uploaded to a server.
Completely free
Every tool is free, with no limits, no watermarks, and no hidden costs.
Lightning fast
No upload waiting — your images are processed instantly on your own device.
Professional quality
Pixel-perfect output with full control over format, size, and quality.
Frequently Asked Questions
How do I convert a BMP to PNG and keep the transparent background?
PNG natively supports alpha-channel transparency, so any transparent regions in your BMP are carried through to the output. Drop the file into Image Machine and download the PNG — transparency is preserved in the conversion without any additional steps needed.
What is the difference between BMP and PNG file formats?
BMP stores raw, uncompressed pixel data — no quality loss, but enormous file sizes. PNG uses lossless compression to shrink files dramatically while preserving every pixel exactly. Both formats are lossless; PNG is simply far more efficient for storage, sharing, and web use.
Will converting BMP to PNG reduce the file size?
Yes, significantly. PNG's lossless compression is highly effective on graphics, screenshots, and illustrations with large areas of flat color. Typical savings range from 50% to 90% compared to the original BMP, with absolutely no loss in image quality or detail.
Is PNG better than BMP for logos and icon files?
PNG is the industry standard for logos and icons because it supports transparency, compresses efficiently, and is accepted by virtually every platform, design tool, and website. BMP is rarely accepted outside Windows legacy applications and lacks reliable transparency support.
Can I convert BMP to PNG without losing any image quality?
Yes. Both BMP and PNG are lossless formats, so converting between them introduces zero quality degradation. Every pixel in the PNG output is identical to the source BMP — you get a smaller, more portable file with exactly the same visual content.