BMP to PNG Converter
Convert BMP to lossless PNG without quality loss. Drop 1,000+ files — no upload, no server.
Best for converting BMP screenshots or UI assets to a portable lossless format editors can open.
Drop files here
or click to browse · paste from clipboard
Accepts .BMP · Up to 1,000 files
How it works
Drop your files
Drag and drop, click to browse, or paste from clipboard. Up to 1,000 files at once.
Choose settings
Adjust quality, format, and other options to match your needs.
Click Convert
Everything runs in your browser via WebAssembly. BMP to PNG Converter happens locally — no server involved.
Download
Download files individually or grab all at once as a ZIP.
Frequently asked questions
No. Conversion runs entirely in your browser using WebAssembly. Your files never leave your device.
PNG is lossless — every pixel is preserved exactly. This is the right choice for screenshots, diagrams, logos, and anything with text or hard edges. JPG compression creates visible artifacts on sharp edges and flat-color areas. For photographs where file size matters more than pixel perfection, JPG is the better choice.
Yes — every pixel in the output PNG is identical to the input BMP. The only differences are the file size (PNG is smaller thanks to lossless compression) and the format container. No pixel data is altered.
Yes, always. PNG uses lossless compression while BMP stores every pixel raw. For screenshots and diagrams with large flat-color areas, PNG can be 5–10x smaller. For photographs with complex color gradients, PNG may only be 20–40% smaller. If you need very small files from photographic BMPs, JPG is more efficient.
Yes. Drop them all in and ConvertYard processes them in your browser — no uploads, no server. BMP files are large in memory, so 1,000 large BMPs may take more RAM than other formats. Download all results as a single ZIP.