For very large, high-quality images, the best file format from the provided options is .svg.
SVG (Scalable Vector Graphics) is a vector-based format, which means it can scale to any size without losing quality. This makes it ideal for high-quality images, especially for graphics and illustrations.
The other formats listed, such as .jpg (a raster format), .docx, and .pptx, are not optimized for high-quality images in the same way.
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