Convert PNG to BMP Online - Free, Local & Instant
Convert PNG (image/png) to 32-bit Uncompressed Bitmap (.bmp) locally in your browser using HTML5 Canvas. Adjust compression quality, resize in pixels, and download instantly with zero server uploads.
Technical Comparison: PNG vs BMP
Images & Game/Web Assets| Specification | PNG (Source) | BMP (Target) |
|---|---|---|
| Format Name | Portable Network Graphics | 32-bit Uncompressed Bitmap |
| MIME Type | image/png | image/bmp |
| Transparency / Alpha | Yes (full RGBA transparency) | Preserved for PNG, WEBP, AVIF, ICO, SVG, BMP |
| Compression Profile | Lossless DEFLATE | uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools |
| Processing Engine | Native Browser Image Decoder | HTML5 Canvas + Client-Side Binary Encoder |
PNG to BMP — Before & After Example
Input File: asset.png MIME Type: image/png Alpha: Yes (full RGBA transparency) Compression: Lossless DEFLATE Decoding: Browser HTML5 Image + Canvas 2D Context
Output File: converted.bmp MIME Type: image/bmp Pipeline: High-quality bicubic Canvas resampling -> Blob download Best For: uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools
Frequently Asked Questions: PNG to BMP
Does converting PNG to BMP upload my images to a remote server? ▾
Never. Every PNG file you select is decoded directly in your browser using the HTML5 Canvas API and FileReader API. Your images stay in your computer or phone RAM at all times.
Can I resize and adjust compression quality when converting PNG to BMP? ▾
Yes. Use the Quality slider (10%–100%) and the Width/Height pixel inputs above the drop zone. Keeping "Lock Ratio" checked preserves your original aspect ratio automatically.
Does this converter support batch PNG to BMP conversion with ZIP download? ▾
Yes. Drag and drop multiple PNG files at once; you can download each converted BMP individually or click "Download All (.ZIP)" to bundle them locally via JSZip.
Why use BMP instead of PNG? ▾
Converting PNG to BMP gives you uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools while keeping full control over pixel dimensions and byte size.