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Standard BMP has no alpha channel — transparent PNG pixels become this solid color.

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Convert PNG to BMP online

Convert PNG to BMP online free. PNG to bitmap converter with background fill for transparency — download BMP in your browser, no signup.

What is a PNG to BMP / PNG to bitmap converter?

A PNG to BMP converter (png to bitmap, convert PNG to BMP) turns a Portable Network Graphics file into a Windows Bitmap (.bmp). PNG is compressed and can include transparency; classic BMP is often an uncompressed RGB raster without an alpha channel, so transparent pixels are flattened onto a solid background. People search “bmp images” and “png to bmp” when older software, printers, or workflows require bitmap files. This page decodes your PNG in the browser, replaces transparency with a chosen color, and downloads a 24-bit BMP. For smaller web photos use PNG to JPG Converter; for modern compression with transparency use PNG to WebP Converter; to fill transparency while staying PNG use Fill Transparent PNG.

PNG to BMP features

A focused PNG to bitmap converter in the browser.

  • True BMP download

    Exports a real .bmp file (24-bit BI_RGB), not a renamed PNG.

  • Transparency fill

    Replace PNG alpha with white, black, or any hex background.

  • Live preview

    See the flattened bitmap look before you download.

  • PNG examples

    Try sample PNGs instantly — no account required.

  • Private conversion

    Pixels stay on your device; nothing is uploaded to process.

  • Legacy-friendly

    Uncompressed BMP for tools that still expect bitmap images.

How to convert PNG to BMP

PNG to bitmap in four steps.

  1. Upload a PNG

    Drop a .png file or pick an example image.

  2. Set the background

    Choose the color that replaces transparent pixels.

  3. Preview

    Confirm the flattened look matches what you need.

  4. Download BMP

    Save converted.bmp for use in legacy apps or print workflows.

Tips for PNG to BMP

Cleaner bitmap results.
  • 01

    Match the fill to the destination

    Use white for documents, black for dark UIs, or brand color for logos.

  • 02

    Expect larger files

    Uncompressed BMP grows quickly — downscale huge PNGs first if size matters.

  • 03

    Keep a PNG master

    BMP is a delivery format; keep the original PNG when you still need alpha.

  • 04

    Check the preview

    Semi-transparent edges can look different once flattened onto the fill color.

Converters compared

Which format tool fits your job.

  • Online PNG Tools (convert PNG to BMP)

    Competitor ranking for png to bmp / png to bitmap. This page matches that intent with a real BMP download and transparency fill — private in the browser.

  • PNG to JPG (/png-to-jpg)

    Lossy compressed photos for web and email — not an uncompressed bitmap.

  • PNG to WebP (/png-to-webp)

    Modern compression that can keep transparency. Use BMP only when the target requires it.

  • This PNG to BMP converter

    Free online PNG to bitmap tool for downloading classic .bmp files.

Great for

When you need bmp images from PNG sources.

  • Legacy Windows software

    Older editors and utilities that only open BMP.

  • Print / kiosk pipelines

    Some hardware still expects uncompressed bitmap files.

  • Flattening logos

    Replace PNG transparency before handing files to BMP-only tools.

  • Quick one-off conversion

    No install — convert PNG to BMP in the browser.

Why use this PNG to BMP converter

Fast PNG to bitmap without desktop apps.

  • 100% free

    No account, watermark, or conversion quota.

  • Built for “png to bmp” intent

    Targets png to bmp, png to bitmap, and bmp images searches.

  • Privacy first

    Images never leave your device for processing.

  • Explicit alpha handling

    You control the fill color when PNG transparency cannot be kept.

Technical details

How this PNG to bitmap converter works.
Format
Windows BMP, 24 bits per pixel, BI_RGB (uncompressed).
Layout
Bottom-up BGR rows padded to 4-byte boundaries.
Alpha
PNG alpha is composited onto the selected background color.
Processing
Canvas ImageData → ArrayBuffer → image/bmp Blob download.

Sources & References

References on PNG, BMP/bitmap, and browser-side conversion.
  • “Portable Network Graphics is a raster-graphics file format that supports lossless data compression.”
    — Wikipedia — Portable Network Graphics

    Portable Network Graphics: PNG supports an alpha channel. Converting PNG to BMP usually flattens transparency onto a solid background. en.wikipedia.org/wiki/Portable_Network_Graphics

  • “The BMP file format, also known as bitmap image file or device independent bitmap (DIB) file format or simply a bitmap, is a raster graphics image file format used to store bitmap digital images.”
    — Wikipedia — BMP file format

    BMP file format: This converter writes an uncompressed 24-bit Windows BMP (BI_RGB) — a common “png to bitmap” target for legacy apps. en.wikipedia.org/wiki/BMP_file_format

  • “The Canvas API provides a means for drawing graphics via JavaScript and the HTML canvas element.”
    — MDN — Canvas API

    Canvas API: PNG is decoded to Canvas, flattened, then packed into BMP bytes in the browser — no upload. developer.mozilla.org/en-US/docs/Web/API/Canvas_API

  • “The ImageData interface represents the underlying pixel data of an area of a canvas element.”
    — MDN — ImageData

    ImageData: RGBA pixels are remapped to BGR rows with 4-byte padding for a valid BMP file. developer.mozilla.org/en-US/docs/Web/API/ImageData

Frequently Asked Questions

Quick answers about this tool—open a question to read more.