BMP to PNG
Upload a BMP file and download it as PNG. Free to start.
- Sent over HTTPS · link expires in 24 h
How it works
- Step 1:
Drop the BMP file on the orange block above, or press “Choose BMP”.
- Step 2:
Press “Convert to PNG”. The block shows the progress while the server converts the file.
- Step 3:
Press “Download” to save the PNG file. On Free the link works for 24 hours.
How BMP to PNG conversion works
BMP is an image format: it stores uncompressed pixel data in a simple row-by-row grid, resulting in large file sizes but zero quality loss. PNG is an image format that uses lossless DEFLATE compression and supports a full alpha-transparency channel, preserving every pixel exactly as encoded. This conversion changes the file's encoding, compression method, and supported feature set. The output is pixel-accurate: no further quality is lost beyond what the source already encoded. Converting between these two formats is common when the source application does not support PNG natively or when the target platform only accepts PNG. 1converter processes this conversion server-side using open-source tools. Files are transferred over HTTPS, converted on secure cloud servers, and returned through a private download link that expires after 24 hours on Free.
Sources and specifications
Quality levels for BMP → PNG
| Level | File size | Speed |
|---|---|---|
| Low qualitySmallest file, basic quality | Very small | Very fast |
| Medium qualityRecommendedBalanced size and quality | Medium | Fast |
| High qualityLarger file, great quality | Large | Moderate |
| Maximum qualityLargest file, best possible quality | Very large | Slow |
Image Tip: For photos, Medium quality offers the best balance. For graphics with text or sharp edges, use High or Maximum quality to preserve clarity.
When to convert
What the PNG file is good for and why people convert to it.
- Lossless PNG compression reduces file size versus BMP’s uncompressed storage
- Preserves crisp pixel art and sharp edges without JPEG-style artifacts
- Convert a BMP screenshot to PNG for smaller, lossless archiving
- Prepare pixel-art assets for web use while keeping exact colors
Where your file goes
- It travels to our server over an encrypted HTTPS connection and is converted there.
- The PNG file comes back as a private link. It stops working after 24 hours on Free and 7 days on paid plans, and then the files are deleted.
- Want the file to stay on your device? Private Mode converts images right in the browser. Open Private Mode