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Configure the image-tool kit to use ImageMagick rather than GD in Administration > Configuration > Media > Image Toolkit (admin/config/media/image-toolkit). If GD is selected, TN and JPG datastreams will not be generated.

If you wish to prevent image upscaling for images under 500x700 select the configuration option present at Administration > Islandora > Solution pack configuration > Basic Image Solution Pack (admin/islandora/solution_pack_config/basic_image).

Content Models, Prescribed Datastreams and Forms

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