Convert BMP to PNG - Convertlet

Convert

Click to select multiple images

Only BMP files will be accepted

How to Convert Images

Select your input and output formats from the dropdowns above

Click or drag and drop your images into the upload area

Your images will be automatically converted

Download individual files or all files as a ZIP

BMP to PNG Conversion

BMP (Bitmap) is an uncompressed raster image format. It stores color data for every pixel without any compression, resulting in very large file sizes. While it offers high quality, its large size makes it impractical for web use.

PNG files use lossless compression. This means you can edit and save a PNG as many times as you want without losing any quality. PNGs also support transparency, allowing parts of your image to be see-through. This makes PNG ideal for logos, graphics, and any image that needs to be layered over other content.

Frequently Asked Questions

Why should you convert BMP to PNG?

BMP (Bitmap) stores every pixel as raw uncompressed data without any compression algorithm - a 1920×1080 image consumes exactly 6,220,800 bytes (1920×1080×3 bytes for RGB) regardless of content simplicity. This brute-force approach creates enormous files: a single photo easily exceeds 20-50MB, making them impractical for email (attachment limits), web use (slow loading), cloud storage (expensive), or sharing (huge downloads). Converting BMP to PNG applies lossless DEFLATE compression reducing file size by 50-95% depending on image content - simple graphics compress dramatically, photos less so but still significantly. A 30MB BMP becomes 1-10MB as PNG with absolutely zero quality loss - pixel-for-pixel identical. PNG adds full alpha transparency support (256 levels vs none), modern metadata capabilities, and universal software compatibility. Essential for modernizing legacy BMP files, sharing via email, web publishing, or any scenario requiring reasonable file sizes. PNG is simply superior to BMP in every practical way except loading speed on vintage 1980s hardware.

Is this service free?

Yes, Convertlet is 100% free to use. You can convert as many images as you want without any hidden fees or subscriptions.

Is it secure?

Absolutely. All conversions happen securely. Your files are processed and then immediately deleted from our servers to ensure your privacy.

What formats are supported?

We support a wide range of image formats. Input formats: .jpg, .jpeg, .png, .webp, .gif, .svg, .heic, .heif, .avif, .bmp, .ico, .tiff, .dng, .eps. Output formats: .png, .jpg, .jpeg, .webp, .avif, .bmp, .gif, .ico, .tiff. You can convert between any of these formats easily.