QOI Image Compressor
Compress your qoi (Quite OK Image) images directly in your browser. Output to JPEG or WebP. No files leave your device.
Transparency note
This format supports transparency. If you choose JPEG as the output format, transparent pixels will be replaced with a white background. Choose WebP to preserve transparency.
More Tools for QOI
Related Tools
Explore other tools available for this format.
View QOI Files
Open and inspect QOI images directly in your browser.
QOI Metadata Editor
View and edit EXIF and other metadata for QOI files.
Convert QOI
Convert QOI images to other formats like WEBP, PNG, JPEG and more.
Resize QOI Images
Resize QOI images to exact dimensions in your browser. Lock aspect ratio and download instantly.
Crop QOI Images
Crop QOI images to any region in your browser. Draw a selection, lock aspect ratio, and download instantly.
Rotate QOI Images
Rotate and flip QOI images in your browser. Choose 90°, 180°, 270°, or flip horizontally and vertically.
What is qoi?
About QOI
Quite OK Image (.qoi) is a popular image format known for its lossless compression with efficient encoding for web images. QOI is a modern image format with lossless compression, designed to be simple, fast, and lightweight, perfect for quick image storage and web usage.
FAQ
Common questions
We've got answers.
You can compress any supported input format including JPEG, PNG, WebP, SVG, BMP, GIF, TIFF, QOI, TGA, EXR, and more. The compressor decodes the input and re-encodes it at your chosen quality setting.
Currently the compressor outputs JPEG or WebP. JPEG gives the smallest file sizes for photos. WebP is the better choice when you need to preserve transparency.
Yes, but you control how much. Lower quality settings produce smaller files with more visible artifacts. Higher settings preserve more detail. The tool lets you preview the result before downloading.
Yes. JPEG does not support transparency. Transparent pixels will be replaced with a white background. Choose WebP as the output to preserve transparency.
It depends on the source format and quality setting. A PNG re-encoded as JPEG at 80% quality can often be 70-90% smaller. Results vary by image content.
Yes. The compressor includes a side-by-side comparison tool so you can visually assess the quality difference before committing to a download.