BMP to PNG Converter

How to use BMP to PNG Converter

1. Open BMP to PNG Converter — no sign-up or software download is required.
2. Drag and drop your file(s) into the tool, or click to browse and select them from your device.
3. Choose any options you need, such as order, quality, page range or output format.
4. Click the action button and let the tool process everything locally in your browser.
5. Download the finished file. Your originals are never changed or uploaded.

Why use BMP to PNG Converter?

• 100% free with no limits, no sign-up and no watermarks.
• Private by design — your files are processed in your browser and never uploaded to a server.
• Fast and lightweight, with instant results even on a phone or a slow connection.
• Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
• Part of a full image tools suite, so related bmp to png tasks are one click away.

What people use BMP to PNG Converter for

• Compressing a bitmap without any loss of quality.
• Converting legacy BMP assets while keeping every pixel exactly as it was.
• Preparing a screenshot or diagram stored as BMP for the web.

BMP to PNG Converter: limits and things worth knowing

• PNG is lossless, so this conversion changes the file size without changing a single pixel — the ideal choice for screenshots, diagrams and scanned text.
• Size reductions are typically large because BMP applies almost no compression at all.
• PNG preserves the alpha channel from a 32-bit BMP, which a JPG conversion would discard.

Supported formats

Reads: BMP. Writes: PNG.

Is it private and secure?

Your privacy is built in. BMP to PNG Converter does all processing on your own device using client-side code, so your files are never transmitted, stored or seen by anyone — including us.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

Learn more

Image Optimization: Compress, Resize and Convert — Faster pages and smaller files start with good images. Learn how to compress, resize and convert images without wrecking quality.