Your files stay on your device 3FR to QOI Turn 3FR images into QOI files right in your browser. QOI is a fast lossless image format that few apps support. Drop your 3FR files here or click to browse from your device Select Files Converting starts the moment you drop. Nothing is uploaded. How it worksConversion re-encodes pixels: EXIF metadata and color profiles are not carried over, EXIF rotation is applied, and animated GIF, WebP, and AVIF inputs keep only their first frame (flagged on the result). Inputs are validated by their actual bytes, and every output is signature-checked before it counts as done. Convert to PNGJPGWEBPAVIFJXLWP2QOIGIFBMPTIFFICOFromSwap Quality QOI has no quality setting here. Advanced Engines Read withWrite with Auto picks the engine that handles these formats best. Change one to compare results. Your choice is saved on this device. More image tools - Compress images (/images/compress) - Resize images (/images/resize) All image tools (/images) Canonical HTML: https://nutter.tools/images/convert/3fr-to-qoi/ Markdown version: https://nutter.tools/images/convert/3fr-to-qoi/index.md Plain-text version: https://nutter.tools/images/convert/3fr-to-qoi/index.txt Agent index: https://nutter.tools/llms.txt