BMP to PNG
WEBConvert BMP images to PNG online — free, fast and private. Your files never leave your browser. Nothing is uploaded.
Add at least one image to continue.
100% private — images never leave your browser.
What is the BMP to PNG tool?
Convert BMP to PNG free in your browser — no upload, no sign-up, and no waiting on a server queue. BMP (bitmap) files store every pixel uncompressed, which is why an old Windows screenshot or a Paint drawing can weigh tens of megabytes. PNG stores exactly the same pixels losslessly, usually at a fraction of the size — so this bitmap to PNG conversion shrinks the file without touching the image quality at all.
That size is also why converting locally matters here: with upload-based converters, a huge BMP has to crawl up your connection before anything happens. This BMP to PNG converter skips that entirely — your browser decodes the bitmap and encodes the PNG on your own device, so even large files convert in moments and never leave your machine. The result opens everywhere: web pages, chat apps, office documents, design tools.
It's completely free with no watermarks or file caps, and it handles batches — drop in a folder's worth of .bmp files and they download together as a ZIP. If you want an even smaller, photo-style file and don't need lossless output, the BMP to JPG and BMP to WebP converters are one click away in the conversions bar. Works on your phone too, in English and Arabic.
How to use the BMP to PNG
- Open the BMP to PNG converter — From and Convert to are already set to BMP → PNG.
- Click «Choose images» or drop your .bmp files into the drop zone — batches are welcome.
- Check the file list; each bitmap shows a BMP badge confirming it was detected.
- Click «Convert BMP → PNG» — the conversion runs locally in your browser.
- Download the PNG — one file downloads directly, several arrive as a single ZIP.
Frequently asked questions
Does converting BMP to PNG lose quality?
No. PNG is a lossless format — every pixel of the bitmap is preserved exactly. The file gets smaller because PNG compresses the data efficiently, not by discarding detail.
Why are BMP files so big in the first place?
BMP stores raw, uncompressed pixel data — three or four bytes for every single pixel. PNG stores the same image with lossless compression, which is why the converted file is typically dramatically smaller.
BMP to PNG or BMP to JPG — which should I choose?
PNG when you want a perfect, lossless copy — right for screenshots, diagrams and graphics with text or sharp edges. JPG produces an even smaller file for photographs but is lossy. Both converters are in the conversions bar on this page.
Is my BMP file uploaded to a server?
No — and with files this large, that matters. The conversion happens entirely in your browser, so there's no slow upload and your image never leaves your device.
Can I convert several BMP files at once?
Yes. Add as many .bmp files as you like in one go; they're converted one after another in your browser and download together as a single ZIP archive.
Is this BMP to PNG converter free? Any size limits?
Completely free — no account, no watermark, no artificial caps. Very large bitmaps are limited only by your device's memory.