Does converting PNG to BMP reduce image quality?

BMP uses lossy compression, so there is some quality trade-off, but at the default quality setting the difference is generally not visible to the eye. You can re-convert at a higher quality if you notice artifacts.

What happens to transparency when converting PNG to BMP?

BMP does not support transparency, so any transparent areas in your PNG file will be filled with a solid white background during conversion.

Is my image uploaded to a server?

No. The conversion from PNG to BMP happens entirely on your device using your browser's built-in image processing — your files are never uploaded anywhere.

Convert PNG to BMP Online Free

PNG and BMP are both common image formats, but they serve different purposes. PNG is typically used for screenshots, while BMP is best known for Windows-native applications. Converting from PNG to BMP takes seconds with this tool — just drop your files below, and the conversion happens instantly on your own device.

Some legacy Windows applications and industrial scanning or printing software only accept uncompressed BMP — converting a PNG to BMP satisfies that requirement without any lossy re-encoding.

BMP stores pixel data with zero compression, which is occasionally required by legacy Windows software or specific print workflows that don't accept compressed formats.

How to convert PNG to BMP

1 Drop one or more PNG files onto the box above, or click it to browse your device.
2 The converter detects each file as PNG and is already set to output BMP — no settings to configure.
3 Conversion runs instantly inside your browser using a Web Worker, so your files are never uploaded and it works even on a slow connection.
4 Click a file's download button to save it, or use "Download all" to get every converted file at once in a single .zip.

PNG

lossless compression

Transparency: Supported
Animation: Not supported

Typically used for

screenshots, logos and icons, graphics with sharp edges or text, images needing transparency

Pros

+ Lossless compression — no quality loss, ever
+ Full alpha-channel transparency support
+ Universally supported by every browser, OS, and app

Cons

- Larger file sizes than JPG or WEBP for photographs
- No animation support

BMP

none compression

Transparency: Not supported
Animation: Not supported

Typically used for

Windows-native applications, raw uncompressed image storage, some legacy print workflows

Pros

+ Completely uncompressed — no generation loss whatsoever
+ Simple format, trivial for any software to read

Cons

- Very large file sizes compared to every other format here
- No transparency support
- Rarely used for web or sharing

Frequently asked questions

Yes. This converter runs entirely in your browser, is free with no sign-up, and has no limit on how many files or how many times you use it.

A practical, format-by-format guide to when to use PNG, JPG, WEBP, GIF, HEIC, or BMP — and when it's worth converting between them.