Free BMP to PNG Converter
Convert BMP images to high-quality PNG format with full transparency support and lossless compression.
Drag & drop your BMP images here or click to browse
Supports BMP • Max 50MB per image
How to Use BMP to PNG Converter by Lab51i
This BMP to PNG Converter is a fast, free web tool that instantly converts old-school BMP images into modern, high-quality PNG files — with full transparency support and lossless compression.
Perfect for web design, graphics editing, and archiving.
No software. No sign-up. Just upload and convert.
Step 1: Upload Your BMP Files
Get started in seconds:
- Drag & drop your BMP files into the upload area, or
- Click “Select Images” to browse your device.
You can upload multiple BMPs at once.
Only BMP files accepted Max size per file: 50 MB Tip: Hold Ctrl (or Cmd) to select several files
Step 2: Conversion Starts Automatically
After upload:
- Each BMP appears in a preview card.
- Status updates: “Queued” → “Converting…” → “Completed”.
- A live progress bar tracks your batch.
No clicks needed — it starts immediately!
Converts with 100% lossless quality — every pixel preserved.
Step 3: Compare BMP vs PNG Side-by-Side
Each card shows:
| Original (BMP) | Converted (PNG) |
|---|---|
| Your bulky BMP image | Same image, now in PNG |
| Original file size | New size (often 50–80% smaller) |
| Full preview | Full preview |
Hover to zoom. See the final PNG result instantly.
Transparency is preserved — alpha channels from BMP are kept in PNG.
Step 4: Download Your PNG Files
Two easy download options:
Option A: Download One PNG
- Click the blue download icon under any finished image.
- Saves as: yourfile.png
Option B: Download All as ZIP
- Wait for at least one conversion to finish.
- Click “Download All as ZIP”.
- Get one file: Lab51i_converted_bmp_to_png.zip
- Inside: Lab51i_001.png, Lab51i_002.png, etc.
Ideal for batch updates!
Why Convert BMP to PNG?
| Benefit | Impact |
|---|---|
| Much smaller files | Up to 80% smaller than BMP |
| Transparency support | Alpha channels preserved |
| Web-ready | PNG is standard for websites |
| No quality loss | Lossless conversion |
BMP is outdated and bloated — PNG is modern, efficient, and universal.
Pro Tips
- Best for: Screenshots, scanned images, legacy graphics
- Transparency? If your BMP has an alpha channel, PNG will keep it
- Large files? BMPs are huge — this tool makes them web-friendly
- Batch convert 10–20 files at a time for best performance
Common Questions
Why are BMP files so big? BMP uses no compression — every pixel is stored raw. PNG compresses smartly.
Will my image quality drop? No! Conversion is 100% lossless — identical pixels.
Can I convert back to BMP? Yes, but not recommended — you’ll lose the size benefits.
Is it safe? Yes! All processing happens in your browser — no files are uploaded.
You’re Done!
You’ve just:
- Turned bloated BMPs into sleek PNGs
- Saved massive storage space
- Created web-ready, transparent images
Free BMP to PNG Converter by Lab51i From ancient to awesome — in one click.
Drop your first BMP now and modernize your images!
