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Convert BMP to PNG – Smaller Files, Web-Ready Images

Convert BMP images to PNG with transparency support and smaller file sizes.

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format

Step 3: Convert files

Read Terms of use before using

Step 1: Upload your files

You can also Drag and drop files.

Step 2: Choose format

Step 3: Convert files

Read Terms of use before using

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BMP Files Too Large for Web Use?

BMP (Bitmap) files store images without compression, creating unnecessarily large files. A simple screenshot might be 5MB as BMP but only 200KB as PNG—that's a 96% size reduction.

Converting to PNG gives you web-optimized images with lossless compression. Your images look identical but load faster on websites and take less storage space.

How to Convert BMP to PNG

Upload your BMP file – Select your bitmap image
Confirm PNG output – PNG provides lossless compression with optional transparency
Download your file – Get your optimized image ready for web or apps

Conversion happens in your browser—fast, private, no software required.

Why Convert BMP to PNG?

Massive File Size Reduction

PNG uses lossless compression that typically reduces BMP file size by 70-95%. A 4MB BMP might become a 300KB PNG with zero quality loss.

Web Compatibility

BMP isn't supported by all web browsers and platforms. PNG is universal—every browser, website, and application handles PNG perfectly.

Transparency Support

PNG supports alpha transparency (varying levels of opacity). If you need transparent backgrounds or partial transparency, PNG is essential.

Lossless Quality

Unlike JPEG, PNG compression is lossless. Your image quality remains identical to the original BMP—just in a smaller file.

BMP vs PNG Comparison

BMP – Uncompressed, huge files, Windows-native, no transparency
PNG – Lossless compression, small files, universal, full transparency support
Quality – Identical (both lossless)
File size – PNG typically 70-95% smaller

There's rarely a reason to keep BMP files when PNG does everything better.

Common BMP Sources

Windows Screenshots

Older Windows versions saved screenshots as BMP. Convert these massive files to PNG for practical storage and sharing.

Scanned Documents

Some scanners default to BMP format. Convert to PNG for efficient storage and web upload.

Paint and Legacy Software

Classic software like MS Paint historically saved as BMP. Convert your old artwork to modern PNG format.

Technical Applications

Some engineering and medical software outputs BMP. Convert for sharing and archiving.

Batch Convert Multiple Images

Have a folder of BMP files? Upload them all and convert to PNG in one batch. Reclaim massive amounts of storage space instantly.

Works on Any Device

Convert BMP to PNG in your browser:

Windows, Mac, Linux, Chromebook
Chrome, Firefox, Safari, Edge
iPhone, iPad, Android

Pro Tip

After converting BMP to PNG, you can further optimize PNG files for web using tools like TinyPNG. This provides additional 20-50% compression with minimal quality impact for web use.

Common Mistake

Keeping BMP files 'for quality.' PNG is also lossless and much smaller. There's no quality benefit to BMP. Convert and delete the BMPs to save storage.

Best For

Converting screenshots, technical diagrams, scanned documents, and any non-photographic images. PNG excels at graphics with solid colors and sharp edges.

Not Recommended

Don't use PNG for large photographs—JPG or WebP compress photos more efficiently. PNG is best for graphics, not photos.

Frequently Asked Questions

No. PNG uses lossless compression. Your image will be pixel-identical to the original BMP, just in a much smaller file.

Typically 70-95% smaller. A 5MB BMP screenshot might become 200KB as PNG. Exact reduction depends on image content.

BMP files are too large and some browsers don't support them. PNG provides the same quality with 90%+ smaller files and universal browser support.

Yes. PNG supports full alpha transparency—completely transparent areas, semi-transparent areas, and everything in between. BMP doesn't support transparency.

Use PNG for screenshots, graphics, and anything with text or sharp edges. Use JPG for photographs. PNG is lossless; JPG loses some quality but compresses photos better.

BMP doesn't support transparency. If your image has a solid background color, it will remain solid in PNG. You can add transparency afterward with image editing software.

BMP stores every pixel without compression. A 1920x1080 image at 24-bit color uses 1920×1080×3 bytes = about 6MB. PNG compresses this dramatically.

Yes. Upload multiple files for batch conversion. All your BMP images convert to PNG simultaneously.

BMP Conversions & Related Converters

Quick access to the most commonly used file conversions.