Image processing¶

We need some image processing for e.g.

• Thumbnails, e.g. in tables see #1280
• Previews, e.g. downsize images in entity views when too big
• Slideshows, again downsizing if images are too big

• An original file should be kept and be available
• Do we process the images on the fly or in a batch job or after uploaded and store them for later use, ...
• Alternatives for projects we know in advance that they will have mainly large images (e.g. scans), should we consider something like an IIIF API?