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Free File Converter

PNG to BMP converter

Convert PNG images to BMP in your browser.

Processed in your browser. This file is converted on your device and is never uploaded.

Converter

.png up to 50 MB. You can also drag a file here.

Options

Checking what this browser supports…

JPEG cannot store transparency, so transparent areas are painted this colour. Use a CSS colour such as #ffffff or black.
Leave both empty to keep the original size.
When off, the image is stretched to exactly the width and height you give.

No file selected.

About this tool

PNG is what screenshots, logos, and exported graphics are usually saved as. BMP is uncompressed and trivially simple, which is occasionally what a piece of legacy software insists on.

This tool converts PNG to BMP entirely in your browser. The image is decoded, drawn, and re-encoded on your device, so nothing is uploaded and the size of the file costs you no waiting.

Supported formats and limits

Input
.png
Output
.bmp (image/bmp)
Output name
The original name with the new extension, for example photo.png becomes photo.bmp.
File size limit
50 MB
Processing
In your browser. The file is not uploaded.

How to use it

  1. Choose a .png file, or drag one onto the page.
  2. Choose the colour that replaces any transparency.
  3. Optionally set a width or height to resize at the same time.
  4. Select Convert, then download the BMP file.

Limitations

  • The output is uncompressed 24-bit BMP, so the file is large: roughly three bytes per pixel regardless of the picture.
  • 24-bit BMP has no transparency, so transparent areas are filled with the background colour you choose.
  • Metadata is not preserved. EXIF fields, including camera settings and GPS location, are dropped, which is a privacy benefit but worth knowing if you rely on them.
  • Colour profiles are not preserved, so an image in a wide-gamut profile may shift slightly.
  • The camera's EXIF orientation is applied, so a photo taken sideways comes out upright rather than rotated.

Frequently asked questions

Is my image uploaded?
No. The conversion runs entirely in your browser. The image never leaves your device and no request carrying it is made.
What happens to transparent areas?
BMP cannot store transparency, so transparent and semi-transparent pixels are composited onto the background colour before encoding. The default is white.
Can I resize while converting?
Yes. Set a width, a height, or both. With proportions kept, one dimension is derived from the other, and giving both fits the image inside that box rather than distorting it.

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