BMP to PNG Converter
Convert bulky BMP images into compact, lossless PNG files. Because BMP stores pixels uncompressed, switching to PNG usually shrinks the file dramatically while keeping every detail. No quality is lost in the process.
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Why use this converter?
BMP files are large because they save raw, uncompressed pixel data, which is why a single image can run into many megabytes. PNG applies lossless compression, so you get the exact same picture in a far smaller file that’s easy to email, embed, or upload. It’s perfect for old scans, screenshots, and exported graphics that you want to modernize without sacrificing quality, and PNG’s alpha channel means any transparency is preserved. Every conversion happens right inside your browser using your device’s built-in imaging tools, so even big BMP files convert quickly and never leave your computer.
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Frequently asked questions
Why is the PNG so much smaller than the BMP?
BMP stores image data without compression, while PNG uses lossless compression. You keep identical image quality but in a much smaller file.
Is my file private and secure?
Completely. Your file is processed 100% inside your browser using the Web APIs built into your device. Nothing is uploaded to any server — imgic never sees, stores, or transmits your images. You can even use these tools offline once the page has loaded.
Is it really free, with no watermark?
Yes. The tool is free to use as often as you like, adds no watermark, and never asks you to sign up.
Will transparency be preserved?
Yes. PNG supports an alpha channel, so any transparent regions in your BMP are kept in the converted file.
What is a BMP file?
BMP (Bitmap) is a Windows image format that stores pixels uncompressed. It preserves full quality but produces very large files, which is why converting to PNG is a popular way to save space.