Convert BMP to PNG

Convert BMP files to PNG in your browser. PNG files are typically smaller than BMP. Free, no upload, no signup.

Output format

PNG

01 — Overview

Why convert BMP to PNG

PNG files are typically much smaller than BMP at equivalent quality — usually the main reason to make this conversion. Smaller files mean faster page loads, smaller email attachments, and less storage.

02 — Comparison

BMP vs PNG

AttributeBMPPNG
Compression—Lossless
TransparencyNoYes
AnimationNoNo
Typical file sizeVery largeVery large
Browser supportMajor browsers will render BMP, but it's never the right choice for the web.Universally supported in every browser since the late 1990s.

03 — How to

Three steps

  1. 01

    Drop your BMP files

    Drag one or more BMP files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.

  2. 02

    Convert in your browser

    convert.now decodes each BMP and re-encodes it as PNG via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.

  3. 03

    Download the result

    Download a single PNG file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.

04 — Pillars

Why convert.now

  • Private

    Files stay in your browser. No upload step. Nothing for anyone to see.

  • Fast

    No queue, no upload wait. Conversion starts the moment you drop a file.

  • Free

    No ads. No file-count limit. No sign-up wall. Just the converter.

05 — FAQ

Frequently asked

No. The conversion from BMP to PNG runs entirely in your browser using WebAssembly. Files never leave your device. Open DevTools' Network tab if you'd like to verify — there are no network requests with file contents.

06 — More

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