Image Converter
Convert your images instantly in your browser. Free, private, no upload.
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or click to browse files (multiple supported)
How to convert images online
Use this free online converter to change your image format directly in your browser. No file is uploaded to any server — everything happens on your device, keeping your images completely private.
Ověřitelné soukromí
Because all processing happens locally on your device, your files never leave your computer or phone. There are no accounts, no tracking, and no copies stored anywhere.
How to use
- Click "Select Images" or drag and drop your files into the box above.
- The conversion starts automatically — or click "Convert Now".
- Download your converted files instantly.
Frequently asked questions
Converting BMP to PNG is worth doing when you need what PNG offers: lossless and supports transparency. BMP gives you completely uncompressed pixel data, but its drawback is very large files.
How it works
- Add your BMP files.
- The output format is already set to PNG.
- Adjust quality if the format supports it.
- Download the converted PNG files.
Good to know
One thing to keep in mind: larger files, especially for photographs. Converting does not repair damage already present in the source — if the BMP was heavily compressed, those artefacts carry across into the PNG.
Frequently asked questions
Is converting BMP to PNG lossless?
The PNG encoding itself is lossless, so nothing further is discarded. Any compression damage already baked into the BMP remains, because conversion cannot undo it.
Why convert BMP to PNG at all?
Usually for lossless and supports transparency. If neither of those matters for your use, keeping the BMP is perfectly fine.