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Free Online PNG to BMP Converter

Convert PNG to BMP online for free.

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Up to 50 MB per file. Sign up free to convert files up to 100 MB.

PNG to BMP: removing compression for legacy systems

PNG uses lossless DEFLATE compression while BMP stores raw uncompressed pixels. The conversion decompresses the PNG data and writes each pixel value directly into the BMP file. The result is a bit-for-bit identical pixel representation in a much larger file, typically 3-5× the PNG size. Alpha transparency in the PNG is converted to 32-bit BGRA BMP format, though many legacy BMP consumers ignore the alpha channel.

Convert PNG to BMP only when a system requires uncompressed BMP input, legacy embedded systems, certain CNC machines, old Windows software, or hardware displays with BMP-only firmware. In all other cases, PNG is the better choice.

PNG vs BMP: Side-by-side

Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.

Property PNG BMP
Full name Portable Network Graphics Bitmap
Year introduced 1996 1990
Developer / standard body PNG Development Group / W3C Microsoft
MIME type image/png image/bmp
File extension .png .bmp
Compression Lossless (DEFLATE) Uncompressed (typically)
Color / data depth 24-bit truecolor + 8-bit alpha 1 to 32-bit
Max dimensions / size 2,147,483,647 × 2,147,483,647 px 32,767 × 32,767 px
Transparency Yes Yes
Animation APNG extension only No
Standard / specification W3C / ISO/IEC 15948 Microsoft Windows
Best for Logos, screenshots, graphics with transparency or sharp edges Legacy Windows applications, raw pixel data

Frequently asked questions

How do I convert PNG to BMP?

Upload the PNG file and choose BMP as the output format. The conversion takes a few seconds. No account is required and the output carries no watermark. Batches download either one file at a time or as a single ZIP.

Can I convert PNG to BMP without losing quality?

BMP is an uncompressed Windows bitmap. Converting to a lossless target such as PNG, TIFF or BMP preserves every pixel exactly. Converting to a lossy one such as JPG or WebP re-encodes the image, and iFormat uses a high default quality so the difference is invisible at normal viewing size. For the sharpest result, always convert from the highest-quality source you have.

What is PNG?

PNG is a lossless format with transparency support, typically used for logos, screenshots, and graphics with sharp edges. Converting it to BMP produces a file that opens on systems without PNG support.

PNG vs BMP - which format should I use?

PNG is a lossless format with transparency support best for logos, screenshots, and graphics with sharp edges. BMP is an uncompressed Windows bitmap best for raw pixel data with no compression. Use BMP when a website, form, or app requires it, or when you need an uncompressed, simple layout that old software can read.

How do I open PNG files?

On Windows: Photos, or any browser. On a Mac: Preview, or any browser. Universally supported. PNG also carries transparency, which is why screenshots and logos use it.

PNG vs BMP - which format should I use?

PNG is a lossless format with transparency support best for logos, screenshots, and graphics with sharp edges. BMP is an uncompressed Windows bitmap best for raw pixel data with no compression. Use BMP when a website, form, or app requires it, or when you need an uncompressed, simple layout that old software can read.

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Image guides and fixes

How to Compress WebP Images: Quality Settings and Best Practices WebP is already smaller than JPG and PNG, but you can compress it further. Here are the optimal quality settings and when to use lossy vs lossless WebP. Exporting RAW for Print vs Web: TIFF, JPG, or PNG? Your RAW file is edited. Now you need to export it, but TIFF for print, JPG for web, PNG for graphics? Here's how to choose the right format and settings. Best Image Format for Email Attachments: JPG, PNG, or Something Else? Not every image format works in every email client. JPG is the safest bet for photos, PNG for screenshots. Here is when to use each and what to avoid. How to Make a Photo Black and White Online (Free, No App) Converting a colour photo to black and white can transform an ordinary image into something striking. Here's how to do it for free in your browser.
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