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BMP PNG
File conversion

Convert BMP to PNG

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Verified by Adam B.· reviewed by FE Editorial ·updated Jun 16, 2026
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Is it possible to convert BMP to PNG?
Yes - BMP converts to PNG.

You can do it right here with our free converter - no sign-up, and your file is deleted right after.

Upload your .bmp file to the converter above and download the .png in seconds - it is free and your file is deleted afterwards. The output is visually identical to the source; the main change is that PNG files are typically 60-80% smaller than the original BMP.

Also to PNG: QOI · APM · PBM

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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Why convert BMP to PNG?

BMP stores pixels with no compression, making files unnecessarily large for sharing or web use. Converting to .PNG shrinks the file by 60-80% through lossless DEFLATE compression while keeping every pixel identical. PNG also supports full alpha-channel transparency, which BMP handles poorly. The result is a smaller, more compatible file with no visual trade-off.

How to convert BMP to PNG

IrfanView FREE

Open the .bmp in IrfanView, choose File > Save As, and select PNG as the output format.

Paint.NET FREE

Open the .bmp in Paint.NET, go to File > Save As, and choose .png from the file type list.

XnView FREE

Open the .bmp in XnView and use File > Save As to export as .png; the Tools > Batch Convert menu handles entire folders.

Preview (macOS) BUILT-IN

Open the .bmp in Preview, go to File > Export, choose PNG from the Format menu, and save.

Command line - ImageMagick CLI

Run magick input.bmp output.png to convert a single file.

Programs that convert BMP

Picture Resize Free Online Images Converter
XnView
ACDSee Photo Manager
Adobe Fireworks
Adobe Illustrator
FormatFactory
IrfanView
Microsoft Expression Design

About these formats

.BMP Windows Bitmap Image

A BMP file is a Windows Bitmap - a simple, usually uncompressed raster image developed by Microsoft. Every major OS and image viewer opens it with no extra software (double-click works).…

Open .BMP details →
.PNG Portable Network Graphics

A PNG (Portable Network Graphics) is a lossless raster image format. Every modern OS, browser, and image app opens PNGs natively - just double-click. The most common questions are not about…

Open .PNG details →

Quality & what to watch

  • No quality loss: both BMP and PNG are lossless, so every pixel value is preserved exactly after conversion.
  • Expect the PNG to be roughly 60-80% smaller than the BMP - this is normal compression, not a sign of quality loss.
  • Standard 24-bit BMP has no alpha channel; if your source is a 32-bit BMP that includes transparency, PNG will preserve it.

Frequently asked questions

Does converting BMP to PNG reduce image quality?
No. Both formats are lossless. The pixel data is bit-for-bit identical after conversion; only the file size changes.
Why is the PNG file so much smaller than the BMP?
BMP stores every pixel uncompressed. PNG applies DEFLATE compression to the same data, cutting file size by 60-80% with no visual difference.
Can I convert multiple BMP files at once?
Yes. IrfanView and XnView both offer batch conversion. On the command line, magick mogrify -format png *.bmp converts an entire folder in one step.
Will the PNG keep the original BMP colors exactly?
Yes. Standard 24-bit BMP and PNG use the same RGB values, so colors are preserved without any adjustment.