BMP to PNG Converter
Convert BMP bitmap images to PNG format with transparency support.
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Why convert BMP to PNG?
BMP files are uncompressed and can be very large. PNG gives you lossless compression with much smaller file sizes and transparency support - perfect for web use and sharing.
- Smaller files - PNG compresses without losing quality
- Transparency - PNG supports alpha channels, BMP does not
- Web ready - PNG is universally supported on all browsers
About Converting BMP to PNG
BMP is an uncompressed Windows raster format that stores each pixel verbatim. Files are very large, so BMP is normally converted to a compressed format for storage or sharing. When you need to move away from BMP, the usual reason is simple: very large files.
Converting your BMP image to PNG solves that. PNG is a lossless raster image format that supports a full alpha-transparency channel. It is the standard choice for screenshots, logos, icons and any graphic with sharp edges or text where quality must be preserved exactly. In practice you gain lossless compression keeps every pixel intact and full alpha transparency. PrivConvert runs the whole BMP-to-PNG conversion in server memory and deletes your file the instant the PNG is ready — nothing is stored, logged or reused.
When this conversion helps
- You need lossless compression keeps every pixel intact
- You need full alpha transparency
- You need universally supported in browsers and editors
- Shrinking a bulky BMP file into a much smaller PNG
- Escaping a proprietary BMP file for the open PNG standard
Tips for best results
- PNG preserves quality exactly, so the conversion from BMP will not introduce any new compression artifacts.
- For the smallest possible PNG without visible quality loss, start from the highest-quality BMP you have.
- Files up to 250 MB are supported, and you can batch-convert several BMP files at once; each is processed privately and deleted immediately.
How to Convert BMP to PNG Online
Converting BMP files to PNG format is simple with PrivConvert. Our free online converter handles the entire process in your browser with no software installation required. Your files are processed securely in memory and never stored on our servers.
Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.
Once uploaded, the conversion from BMP to PNG starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.
Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.
Why Choose PrivConvert?
Unlike other online converters that upload your files to remote servers, store them for days, and may use them for AI training or sell your data, PrivConvert was built with privacy as the foundation. Here's what makes us different:
Files are processed in volatile memory (RAM) and immediately purged. Nothing is ever written to disk or backed up.
All uploads and downloads are encrypted with TLS 1.3. Your files cannot be intercepted in transit.
Use any tool instantly without signing up, providing an email, or creating a profile. No tracking cookies, no user profiling.
Compatible with Windows, macOS, Linux, iOS, and Android. No plugins or desktop software needed - just a modern web browser.
BMP vs PNG - Format Comparison
| Feature | BMP | PNG |
|---|---|---|
| File extension | .bmp | .png |
| Full name | Bitmap Image File | Portable Network Graphics |
| Introduced | 1990 | 1996 |
| Compression | Uncompressed | Lossless |
| Encoding | Binary | Binary |
| Transparency | No | Yes |
| Open standard | — | Yes |
| Supported by PrivConvert | Yes (as input) | Yes (as output) |
| Privacy-safe conversion | In-memory, zero storage | |
| Max file size | 250 MB per file | |
| Batch support | Up to 20 files simultaneously | |
Trusted by Thousands of Users
PrivConvert processes thousands of file conversions every day. Our commitment to privacy and security has made us the go-to choice for professionals, developers, and privacy-conscious users worldwide.