BMP is Windows' original uncompressed bitmap — lossless by default, huge by design. Convert from BMP to modern formats that ship the same pixels in a fraction of the bytes.
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Drop BMP files to convert out; or drop PNG/JPG/WebP to convert into BMP for tools that require it.
BMP is raw pixel data — fastest decode of any format. Output encodes to your chosen format in-browser using the appropriate codec.
BMP to JPG: 90–95% size reduction. BMP to PNG: lossless, 40–70% smaller. BMP to WebP: 90–95% smaller. Alpha preserved for 32-bit BMP sources.
Convert images between these related converters
BMP stores every pixel as raw RGB bytes — no codec, no loss, no compression. That's fine for data integrity and terrible for file size. Every modern format outcompresses it by 10–20×.
BMP Converter capabilities
90–95% size reduction for photographic BMP content
lossless with 40–70% smaller files than BMP
modern format, 90–95% smaller, browser-compatible
BMP files never leave your browser tab
Format history, conversion use cases, and edge cases.
Industrial control systems, embedded hardware displays, some Windows clipboard operations, legacy print drivers, and certain medical imaging devices output BMP for simplicity of implementation. No codec required — just raw bytes.
PNG for lossless quality with compression, ideal for screenshots and UI graphics. JPG for photographic content where file size matters. WebP for modern web delivery. PNG beats BMP everywhere transparency matters; JPG beats it everywhere size matters.
Yes. Indexed color (palette-based) BMPs expand to 24-bit truecolor during conversion. Palette colors preserve exactly through the expansion.
Only when a target system specifically requires BMP — some older video overlay cards, embedded displays, and legacy print systems expect uncompressed bitmap. Converting to BMP deliberately is rare in modern workflows.
Yes. 32-bit BMP uses the 4th byte as alpha. PNG, WebP, and AVIF all support full alpha channels and preserve 32-bit BMP transparency exactly. JPG output flattens alpha against white.
50 MB per BMP. Print-sized BMPs (A3 at 300 DPI) can exceed this — they're typically 100+ MB uncompressed. For oversized BMPs, resize or crop to a smaller working area first.