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PNG to BMP Converter

Upload a PNG and download it as an uncompressed 24-bit BMP bitmap — converted entirely in your browser.

PNG → BMP24-bitBrowser basedFree

Last updated: May 30, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is PNG to BMP Converter?

PNG to BMP converts PNG images into Windows BMP (bitmap) files. BMP stores raw, uncompressed pixels, which some imaging tools, scanners, and embedded systems expect. Converting a PNG to BMP produces a clean, uncompressed bitmap of the image.

This converter decodes your PNG with the browser's image engine and writes a standard 24-bit uncompressed BMP. Because 24-bit BMP has no alpha channel, transparency is composited onto a white background. Nothing is uploaded to a server.

How to Use PNG to BMP Converter

1

Drop a PNG file onto the upload area or click to browse

2

The image is decoded and written as a BMP instantly

3

Compare the BMP preview with your original

4

Click Download to save the BMP

Common Use Cases

  • Producing an uncompressed bitmap for software that requires BMP input.
  • Converting a PNG to BMP for embedded systems or legacy Windows tools.
  • Preparing a raw bitmap for an image-processing pipeline.
  • Exporting a PNG as a plain, uncompressed Windows bitmap.

Example Input and Output

A compressed PNG converts to a larger, uncompressed 24-bit BMP.

Input
image.png (320 KB, PNG)
Output
image.bmp (2.3 MB, 24-bit BMP)

How This Tool Works

The browser decodes the PNG to canvas pixels, composites any transparency onto white, and writes a 24-bit uncompressed BMP file for download.

Technical Stack

TypeScriptCanvas APIBMP encoderBITMAPINFOHEADERClient-side processing

Format

Output is a 24-bit BI_RGB BMP with bottom-up rows — the most widely compatible bitmap variant.

Privacy

Your image never leaves the browser; conversion is fully client-side.

Frequently Asked Questions

Is my PNG uploaded anywhere?
No. Decoding and BMP encoding run entirely in your browser.
Why is the BMP so much larger than the PNG?
BMP stores every pixel uncompressed, while PNG uses lossless compression, so the BMP is typically several times larger.
What happens to PNG transparency?
24-bit BMP has no alpha channel, so transparent areas are composited onto white.
What BMP format is produced?
A 24-bit uncompressed BI_RGB BMP, the most widely compatible bitmap variant.