Convert PNG to BMP Online

Convert PNG to BMP - Complete Guide

Converting PNG to BMP stays in the raster image family but changes the traits that decide size, quality, transparency, editability, or device support. PNG is a lossless image format commonly used for screenshots, transparent graphics, logos, and high-quality web images. BMP is a image format. Bitmap format. Below is what actually changes in a PNG→BMP conversion, what is preserved, and when BMP is the better choice than keeping PNG.

What changes when you convert PNG to BMP

• Both formats store data without lossy compression, so converting PNG to BMP preserves full quality.
• PNG can store transparent areas, but BMP cannot. Any transparency is flattened onto a solid background (white by default).

About the PNG format

PNG (Portable Network Graphics) is a lossless image format that supports transparency. Our free PNG converter allows you to convert PNG files to JPG, WEBP, GIF, BMP, PDF, and many other formats. You can also convert any image format to PNG to take advantage of its transparency and lossless compression.

• Full name: Portable Network Graphics
• Developer: PNG Development Group
• Introduced: 1996
• Compression: Lossless (DEFLATE)
• Color depth: 24-bit (16 million colors) + 8-bit alpha
• Opens with: every browser, Photoshop, GIMP, Figma

Where PNG is strong: lossless quality with no compression artifacts; full alpha transparency; crisp text, screenshots, and line art.

Typical PNG uses: screenshots, logos and UI graphics, images that need transparent backgrounds.

About the BMP format

BMP (Bitmap) is an uncompressed image format resulting in large files. Convert BMP to JPG, PNG, or WEBP to significantly reduce file size while maintaining quality.

• Full name: Bitmap Image File
• Developer: Microsoft
• Introduced: 1990
• Compression: None/RLE
• Opens with: Windows Paint, Photoshop, GIMP

Where BMP is strong: stores exact, uncompressed pixels; simple format that legacy Windows tools read directly.

Typical BMP uses: legacy Windows applications, raw bitmap editing, embedded systems.

What BMP keeps

• Full original quality — no lossy re-compression is applied.
• Image dimensions (width and height in pixels) stay the same unless you resize.
• BMP adds: stores exact, uncompressed pixels.

Things to watch out for

• If you need to keep a transparent background, convert to PNG or WebP instead of BMP.
• One BMP limitation to keep in mind: very large files.

When to convert PNG to BMP

• Convert PNG to BMP for legacy Windows applications.
• Convert PNG to BMP for raw bitmap editing.
• Convert PNG to BMP for embedded systems.

PNG vs BMP — format comparison

A quick side-by-side of the structural differences between PNG and BMP, so you can confirm this is the right conversion for your file:

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