PNG to BMP Converter — Free Online

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How to use PNG to BMP

Upload the PNG.
Convert and download the BMP — same pixels, uncompressed container.
Expect a much larger file — raw storage is BMP's nature.
Transparency won't survive for most consumers — flatten deliberately if the background matters.

What is PNG to BMP?

A PNG to BMP converter unpacks a compressed PNG into the BMP bitmap format — essentially raw pixel rows with a header, no compression. The image is pixel-identical; the file balloons (a 200 KB PNG can become a 5 MB BMP), because BMP stores every pixel verbatim.

BMP persists where simplicity beats size: legacy Windows software, embedded systems and microcontrollers (whose tiny firmware can parse raw rows but not PNG's compression), industrial and lab equipment, and old printing/scanning pipelines. The conversion is a compatibility service for those worlds.

About the PNG to BMP

Upload the PNG, convert, download the BMP.

Who actually needs BMP in 2026: embedded/electronics work (displaying images on microcontroller-driven screens — Arduino/ESP projects famously want raw or BMP formats their bytes-limited code can parse), legacy enterprise and lab software that predates PNG support or was never updated, certain Windows resource pipelines (older tooling for icons, wallpapers and installers), and file-format testing where an uncompressed known-quantity image is the point.

Format facts for the trip: pixels convert exactly (BMP is lossless — nothing changes but the container), transparency mostly doesn't survive (standard BMPs have no usable alpha for most consumers — expect flattening), and the size explosion is normal physics, not error. For every modern purpose, PNG remains the better container of the same pixels.

Frequently Asked Questions

No compression — BMP stores each pixel's bytes directly. Width × height × 3-4 bytes: a 1920×1080 image is ~6-8 MB regardless of content. That simplicity is exactly why constrained systems can read it.

No — BMP is lossless; every pixel transfers exactly. Only the packaging changes (and swells).

Practically, it's lost — standard BMP has no portable alpha, so transparent areas flatten to a background. If transparency matters downstream, BMP is the wrong destination.

Embedded/microcontroller displays (simple parsing in tiny firmware), legacy Windows and industrial software, some scanning/printing pipelines, and testing scenarios wanting uncompressed references.

24-bit uncompressed is the common denominator most libraries parse; some want 16-bit (RGB565) which typically needs the device toolchain's own converter. Check your library's documented expectations.