Image to BMP Converter

What is Image to BMP Converter?

Converts PNG, JPG, WebP, and other image formats into uncompressed BMP (bitmap) files. BMP is used by legacy software, embedded systems, and print workflows that need raw pixel data without compression artifacts.

Choose between 24-bit BMP (RGB only, 3 bytes per pixel) and 32-bit BMP (RGBA with alpha channel, 4 bytes per pixel). Drop multiple files at once and the tool batches them; download single BMPs or zip the whole batch. Because BMP stores raw pixel data, expect roughly 3 MB per megapixel at 24-bit, 4 MB at 32-bit.

How to use

1. Upload one or more images in any common format (PNG, JPG, WebP, GIF, SVG).
2. Choose the BMP bit depth (24-bit color or 32-bit with alpha) and preview the conversion.
3. Download individual BMP files or all converted images as a ZIP archive.

When to use

• Preparing icons or splash screens for a microcontroller display driver.
• Sending images into an old Windows application that won't read PNG or JPEG.
• Producing master files for a print workflow that demands raw uncompressed pixels.

Result

An embedded systems engineer needs BMP files for a microcontroller display driver. They upload 5 PNG icons and convert them all to 24-bit BMP format, downloading the batch as a ZIP for direct flashing.

FAQ

Why pick BMP over PNG or JPEG?

BMP files store every pixel uncompressed, which is bigger but simpler to decode. Hardware that lacks a JPEG/PNG decoder (small displays, FPGAs, retro game tooling) can read a BMP straight out of flash with a few lines of code.

Should I choose 24-bit or 32-bit?

24-bit if the image is opaque, such as a photograph or screenshot. 32-bit if any pixel is transparent or semi-transparent, like a logo or icon meant to sit over a background. The extra byte per pixel only matters when alpha is in play.

How big will the BMP file be?

Roughly width x height x bytes-per-pixel, plus a small header. A 1920x1080 photo as 24-bit BMP is about 6.2 MB. A 256x256 icon as 32-bit BMP is about 260 KB. There is no compression, so dimension drives size linearly.

Is colour profile information preserved?

Most BMP readers ignore ICC profiles, and many BMP writers strip them. This converter writes the pixels in sRGB, which is what almost every legacy reader assumes. If you need a profile-aware pipeline, BMP is the wrong format.

Is there a maximum image size?

The BMP format itself supports up to 2 GB files, so several hundred megapixels in theory. Practically the canvas size limit on most browsers is around 16384 pixels per side, which is plenty for any embedded or print use case.

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