BMP to PNG Converter
Convert BMP bitmap images to PNG format with transparency support.
Complete the security check to begin
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
You can convert BMP to PNG right in your browser in under a minute. What you gain with PNG: lossless compression keeps every pixel intact.
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 convert BMP to PNG with PrivConvert?
PrivConvert turns your BMP into PNG without ever storing, logging or sharing it. Here is what that looks like in practice:
Each job runs in an isolated in-memory sandbox, so most conversions finish in seconds instead of waiting in a queue.
We never keep a copy. Once your PNG is delivered, both the original and the result are gone — there is nothing left to leak or misuse.
Every conversion runs in its own locked-down process with no network access, so files can never leak or interfere with one another.
Your files are handled entirely by automated code. No staff, partner or AI model ever reads, stores or trains on your data.
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 | |
A converter you do not have to worry about
PrivConvert handles thousands of conversions every day for developers, designers and privacy-conscious people who need a image converted without handing over a permanent copy.