ImageResizUEr resizes textures (up- or down-sampling) to match or approach a requested target size inside Unreal Engine without requiring you to export, run a secondary tool, then re-import them. Can either replace textures, or write them to a /resized_images/ directory, and can ignore textures that contain any of an editable list of word segments.

Includes full source, which should compile fine on osx and linux as well.

Please use the (also free) Epic Marketplace version instead for more recent versions of Unreal Engine

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Uses public domain stb_image_resize by Jorge L. "VinoBS" Rodriguez