Convert QOI to PNG Online Free
Convert QOI to PNG for lossless quality, transparency, and universal web compatibility.
ToFormat — free online converter
Upload your files
Max file size: 30MB · Up to 20 files at once
Why ToFormat?
Lossless Output
PNG is a lossless format. Converting QOI to PNG preserves every pixel exactly — ideal for editing, web graphics, and archiving without quality loss.
Transparency Preserved
QOI supports RGBA with full alpha channel; PNG fully retains transparency. Perfect for logos, overlays, and images with transparent backgrounds.
Batch Processing
Upload up to 20 QOI files at once. We'll convert each to PNG and package them in a ZIP for easy download.
About the Formats
⚡ What is QOI?
QOI (Quite OK Image) is a lossless image format created in 2021 by Dominic Szablewski. It features simple, fast encoding/decoding, good compression (often better than PNG), and supports RGB and RGBA. Designed for scenarios where speed matters.
All QOI conversion tools →🖼️ What is PNG?
PNG (Portable Network Graphics) is a lossless raster format created in 1996. It supports full alpha transparency, 24‑bit color, and is widely used for web graphics, logos, and screenshots. PNG is the standard for lossless images with transparency.
All PNG conversion tools →How to Convert
Upload your QOI
Click or drag and drop your QOI files. You can select up to 20 at once.
Choose options
PNG is always lossless. Optionally strip metadata for privacy or keep color profiles.
Download PNGs
Your PNG files are ready. Download individually or as a ZIP archive. Files auto‑delete in 10 minutes.
When to Convert QOI to PNG
🌐 Web Graphics
PNG is web‑friendly. Convert QOI logos and UI elements to PNG for use on websites, with full transparency preserved.
💡 Smaller web version: PNG to WebP →🎨 Graphic Design
Design software (Photoshop, GIMP) handles PNG perfectly. Convert QOI to PNG for editing, compositing, and client deliveries.
💡 For print: PNG to TIFF →📱 Mobile Apps
Mobile developers need PNG assets. Convert QOI graphics to PNG for integration into iOS and Android apps.
💡 For icons: PNG to ICO →📂 Archiving
PNG is a lossless, open format. Convert important QOI files to PNG for long‑term storage with broader compatibility.
💡 Reverse: PNG to QOI →Format Comparison
| Format | QOI | PNG |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | Yes | Yes |
| File Size | Larger | Larger |
Need smaller file size for photos? Try QOI to JPG (lossy). For modern formats with good compression, consider QOI to WebP.
💡 Pro Tips
- QOI is lossless and fast, but PNG offers wider compatibility. Converting ensures your images can be opened anywhere.
- If your QOI has transparency, PNG preserves it with full 8‑bit alpha – perfect for logos and UI.
- PNG files can be large. Use lossless optimizers like PNGQuant or OxiPNG after conversion to reduce size – great for web performance.
- Convert in batch mode — upload multiple QOIs and download all PNGs as a ZIP archive.
- We strip metadata by default for privacy, but you can keep EXIF by toggling the option before conversion (rare in QOI).
- For game development, QOI is great for runtime loading, but PNG is often used for asset distribution.
How QOI to PNG Conversion Works
QOI is a simple lossless format that encodes pixel data using run‑length encoding, differential encoding, and a small lookup table. It is optimized for speed. PNG uses lossless DEFLATE compression to reduce file size while preserving every pixel exactly.
When you convert QOI to PNG, our servers decode the QOI to raw RGB(A) pixels, then encode them using the PNG format. The process is lossless – every pixel from the original QOI is preserved in the PNG. If your QOI contains transparency (alpha channel), it is fully retained in the PNG output.
All processing happens in memory, and your files are permanently deleted after 10 minutes.
QOI vs PNG: Key Differences
Speed: QOI is designed for extremely fast decoding, making it ideal for real‑time applications and games. PNG decoding is slower but still very fast for web use.
File size: QOI compression is often comparable to PNG, sometimes smaller for certain images. PNG generally compresses photographs better.
Compatibility: PNG is universally supported – every browser, image editor, and operating system can open it. QOI is newer and requires specific libraries or software.
When to Choose PNG Over QOI
Choose PNG when you need maximum compatibility – for web publishing, sharing with clients, or long‑term archiving. PNG is the standard for lossless images on the web and in design workflows. QOI is excellent for applications where decoding speed is critical, but for distribution, PNG is safer.
If you ever need to go back to QOI, our PNG to QOI converter can help.