On the homepage of the digital collections homepage, we showcase a series of “featured topics” (also known as “homepage categories”.) As of 2021, we have nine of them: “Women in Science”, “Instruments and Innovation”, and so on. For examples of past Github issues relating to these, see e.g. water, portraits and people, women in science, and so on.
When we create a new one, a curator typically provides the developer with a thumbnail cropped from an original TIFF chosen from the digital collections.
...
a jpg
600x600 density
segment length 16
progressive
precision 8
700 pixels wide
700 pixels tall
3 frames
with a name ending in
_2x.jpg, consistent with the other files in the featured topics asset directory.
See also
For more technical information on featured topics, see: app/controllers/featured_topic_controller.rb and app/views/homepage/_featured_topics.html.erb .
For examples of past Github issues relating to these, see e.g. water, portraits and people, women in science, and so on.