A filter should help someone narrow a collection in a way that matters to their search. Categories that are useful to a publishing system are not automatically useful to the audience. A reader interested in clearer communication may not care whether an entry was classified as news or an essay. An artwork buyer, by contrast, may need to narrow by dimensions or availability. Begin with the information that would help the person choose one item over another. A modest collection can be easier to explore without a filter bar at all, especially when titles and previews already explain its contents.
Use distinctions that help the audience choose.
A customer looking for a suitable artwork may think in dimensions, price, or availability rather than the studio's internal collection names. A useful filter translates those practical questions into choices. A small editorial collection may need no filters at all. For this artwork buyer, “Available now” or a suitable range of dimensions could exclude works they cannot buy or fit in their space. A studio’s internal campaign code would probably not. For someone browsing a short set of communication lessons, a good title may do more than a row of format choices.
Watch the browsing task before adding controls. If a filter leaves the screen empty, explain why and show how to return to the collection. Keep a clear way back to the whole collection, and make applied choices easy to recognize and reverse. The absence of filters is also a design decision that should be evaluated against the browsing task. Add them when they solve a demonstrated problem, not when a template happens to have room.
Put it into practice.
Before adding controls, find out what someone is trying to find and how they would narrow the search. Decide whether clear content, search, or a small number of meaningful filters best serves it. If filters are needed, make selected choices visible, reversible, and understandable; explain an empty result and provide a route back. Do not add counts or category labels as decoration. On
Which distinction would actually help someone narrow the choice?