Convert BMP to QOI
Convert BMP to QOI — a modern lossless format with fast compression and smaller file sizes than PNG.
ToFormat — free online converter
Upload your files
Max file size: 30MB · Up to 20 files at once
Why ToFormat?
Lossless Compression
QOI (Quite OK Image Format) compresses BMP without losing any quality. Perfect for archival, graphics, and applications where every pixel matters.
Smaller than PNG
QOI often achieves better compression than PNG, especially for photographic images, while being much faster to encode and decode.
Batch Processing
Upload up to 20 BMP files at once. We'll convert them all to QOI and package in a ZIP for easy download.
About the Formats
🖼️ What is BMP?
BMP (Bitmap) is a raster graphics format developed by Microsoft. It stores pixel data uncompressed (usually), resulting in large files but exact fidelity. It's the simplest format, supported everywhere, but impractical for web use due to size.
All BMP conversion tools →⚡ What is QOI?
QOI (Quite OK Image Format) is a modern lossless image format created by Dominic Szablewski in 2021. It compresses RGB and RGBA images using a simple, fast algorithm that often outperforms PNG in both speed and file size. QOI is ideal for real-time applications, games, and situations where fast encoding/decoding is critical.
All QOI conversion tools →How to Convert
Upload your BMP
Click or drag and drop your BMP files. You can select up to 20 at once.
Choose QOI settings
QOI is lossless by default. Optionally enable RGBA if your BMP has transparency. That's it – no quality sliders needed.
Download QOI
Your QOI files are ready. Download individually or as ZIP. Files auto‑delete in 10 minutes.
When to Convert BMP to QOI
📱 Mobile Apps & Games
QOI's fast decompression makes it perfect for real-time graphics, game textures, and mobile applications where performance matters.
💡 Need PNG compatibility? Try BMP to PNG →💾 Storage Optimization
Archive your BMP collection in QOI format. Save disk space with lossless compression that often beats PNG.
💡 For web: BMP to WebP →🚀 Real-Time Rendering
Use QOI for textures in real-time renderers – it's designed for speed, making it ideal for live applications.
💡 Also try BMP to TGA →🔄 Legacy Conversion
Have old BMP files? Convert them to QOI for a modern, space-efficient archive that's easy to work with.
💡 Back to BMP: QOI to BMP →Format Comparison
| Format | BMP | QOI |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | No | Yes |
| File Size | Larger | Larger |
QOI is a great lossless alternative to PNG. For web delivery, WebP offers lossy compression. Need to revert to BMP? Use our QOI to BMP converter.
💡 Pro Tips
- QOI is always lossless – there are no quality settings. Perfect when you need exact pixel reproduction.
- It is especially efficient for photographic images, often compressing better than PNG while being 10-20x faster.
- If your BMP contains an alpha channel, enable RGBA mode to preserve transparency. QOI handles alpha efficiently.
- Convert in batch mode – upload multiple BMPs and download all QOIs as a ZIP archive. Great for converting entire folders.
- We strip metadata by default for privacy. QOI doesn’t store EXIF, so any metadata from BMP is removed.
- QOI is supported in many modern tools and libraries. Check if your target software supports it before converting.
- For maximum compatibility with older systems, consider keeping a PNG copy as well.
How BMP to QOI Conversion Works
BMP stores pixel data uncompressed, providing a perfect source for lossless conversion. QOI is a modern format that uses run-length encoding and palette approximation to achieve excellent compression. When you convert, our server decodes the BMP to raw pixels, then encodes them using the QOI algorithm. The result is a file that retains every pixel exactly while often being smaller than PNG.
All processing is done in memory, and your files are permanently deleted after 10 minutes.
BMP vs QOI: Key Differences
Compression: BMP is usually uncompressed → huge files. QOI uses modern lossless compression → smaller than PNG.
Speed: QOI is designed for fast encoding/decoding, often 10-20x faster than PNG.
Features: BMP supports various bit depths but no compression; QOI supports RGB and RGBA with lossless compression.
Use cases: BMP for legacy storage; QOI for modern applications, games, and real-time graphics.
When to Convert BMP to QOI
Convert BMP to QOI when you need a modern, losslessly compressed format for applications where speed and file size matter. QOI is perfect for game textures, mobile app assets, and any scenario where you want PNG-like quality with better performance and smaller files. Always keep the original BMP for maximum compatibility with legacy software.
Our QOI to BMP converter lets you go back to BMP when needed.