BMP to PNG

BMP to PNG for the same picture, far smaller

A BMP file spends three bytes on every pixel, even where a thousand pixels in a row are exactly the same color. PNG notices those patterns and compresses them, without changing any of the pixels. This BMP to PNG converter gives you that benefit in one click, and the result is pixel-perfect.

It's the ideal upgrade for old screenshots, Paint drawings, diagrams and exported graphics. They look identical, and now they're far easier to share.

How to convert BMP to PNG

Because PNG is lossless, there's no quality slider and nothing to get wrong, even with a large bitmap.

1. 1

   Choose a BMP

   Select the bitmap from your computer or phone, or drag it onto the page. It handles one per run.

2. 2

   Press Convert to PNG

   Nothing to adjust here. The pixels are stored as they are, only with lossless compression added.

3. 3

   Download the PNG

   Save the new file, which you can use just about anywhere, from websites and emails to documents and slides.

BMP vs PNG

Good candidates for BMP to PNG

• Old Paint files. Drawings and diagrams saved with older versions of Windows.
• Screenshots from older software. Text stays sharp, unlike in a JPG.
• Technical output. Some scientific tools, CAD exports and industrial machines produce bitmaps.
• Game and app graphics. Old assets are commonly stored as BMP.
• Anything you plan to edit. PNG preserves everything, and you can still add transparency later.

Taking it further

If the PNG still isn't small enough, Compress Image can reduce its palette, and the difference usually isn't noticeable on simple graphics. For photos, BMP to JPG makes a much smaller file. If you need a bitmap for a legacy system later, PNG to BMP converts it back without any loss.

Free and private

No sign-up, no watermark and no upload. Your bitmap is processed on your device, right in your browser.