Free BMP to PNG converter

Why convert BMP to PNG?

People convert BMP to PNG because BMP stores every pixel uncompressed, so the files are enormous for what they actually contain, while PNG keeps every pixel exact and supports a genuinely transparent background.

How to convert BMP to PNG

1. Choose your BMP file. Drop it on the box above, or tap to browse. You can pick several files at once.
2. Confirm the target is .png. It is preselected when your browser can encode it; otherwise the closest available target is chosen. Adjust quality, size or the other options if you want to.
3. Convert and download. Press Convert, then Download. Your file stays on your device the whole time.

What is a .bmp file?

BMP stores pixels uncompressed, which makes files very large and very simple. It survives from early Windows and still appears in older software and some hardware exports; almost any modern format will store the same picture in a fraction of the space.

What is a .png file?

PNG is lossless: it stores every pixel exactly as it was, and supports a transparent background. It is the right format for screenshots, logos, diagrams, icons and anything with sharp edges or text. Photographs come out noticeably larger than they would as JPG.

What to expect from this conversion

The target format is lossless, so every pixel of the decoded image is preserved exactly. The result can be larger than the original, which is the normal trade for keeping full quality.

Is it private?

Yes, by design. Every conversion happens inside your own browser using your device’s processor — there is no server that receives your BMP file, so there is nothing for anyone to store, scan or leak. You can confirm it yourself: open your browser’s developer tools, watch the Network tab while you convert, and you will see no upload.

Questions about BMP to PNG

Is this BMP to PNG converter free?

Yes, completely. There is no account, no daily limit, no watermark and no premium tier.

Is my BMP file uploaded to a server?

No. The conversion runs inside your own browser using your device's processor. The file is read from your disk, converted in memory and saved back to your disk — nothing is transmitted, so there is nothing for anyone to store.

Can I convert BMP to PNG online without downloading software?

Yes. This is an online BMP to PNG converter that runs in your browser, so there is nothing to install and no app to trust with your files. It works the same on a phone.

What happens to the quality?

The target format is lossless, so every pixel of the decoded image is preserved exactly. The result can be larger than the original, which is the normal trade for keeping full quality.

Does BMP to PNG keep a transparent background?

Yes. PNG supports a real alpha channel, and transparent areas come through exactly as they were.

How do I convert BMP to PNG on Windows, Mac or Linux?

The same way on all three: open this page in Chrome, Edge, Firefox or Safari, drop the BMP file, press Convert and download the PNG. Nothing is installed and no admin permission is needed.

Can I batch convert several BMP files to PNG at once?

Yes. Select as many files as you like and they are converted one after another in a single tap, with a download for each and a zip of all of them.

Can I convert BMP to PNG without ImageMagick or a script?

Yes — that is what this page is for. ImageMagick does the same job well if you already have it set up and thousands of files to process; for one file, or a handful, the browser is faster than installing anything.

Should I keep the original BMP file?

Yes — keep it, converting never touches it. The reason to make a copy in another format is that BMP stores every pixel uncompressed, so the files are enormous for what they actually contain.

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