Breadcrumbs
Show the path from home to here, and let people click any step.
A free library of classic and AI interaction patterns for designers and students - the problem, the solution, and when not to use it.
Sources the patterns cite - not endorsements.
Every pattern here is something you can touch. Pick 1, use it for a few seconds, and notice what it does for you.
People find it easier to see where they are than to remember how they got there.
Most AI patterns answer a question interaction designers asked long ago. Learn them in pairs, and each 1 makes the other easier to understand.
Most libraries stop at a screenshot. Every pattern here carries the trade-offs, a wrong example beside the right one, and a check at the end - the parts learning research says make a pattern stick.
Most visitors read about a fifth of the words on a page. So the whole idea has to fit in the first sentence.
People read 20 to 28% of a page's words on an average visit (Nielsen Norman Group).
Show the path from the home page to the current page as a row of links, so people know where they are and can jump back up 1 or more levels.
The whole idea, before anything else - for the reader who stops here.
The wrong version is a near-miss of the right one, drawn on the same grid, and the broken rule is named.
Right and wrong examples shown together beat right-only in 9 of 12 studies, and never lost (Dieterich et al., 2025).
The same row, drawn twice. Only 1 thing changes - and the rule it breaks is named: orientation.
So you can defend the choice to a stakeholder, and skip the pattern when it does not fit.
A lesson learnt without when it applies is hard to reuse on a new problem (Kolodner, Gray and Fasse).
People recognise where they are more easily than they remember how they got there. The row turns the invisible structure into something you can see and point at.
Each example names the product and the month it was last checked, so you can tell whether it is still true.
MDN, the web's most-used reference, ends every page with the date it was last changed.
Learn › Azure › Storage above the article title; the current page is left out.
Home › Driving and transport, marked up as nav aria-label="Breadcrumb".
Combined with, alternative to, conflicts with - not a loose "see also" list.
Concept maps beat text, lists and outlines for remembering, across 55 studies (Nesbit and Adesope, 2006).
A question that makes you apply the pattern to a new screen, not just recognise it.
Tested after reading, people remembered 56% a week later, against 42% for re-reading (Roediger and Karpicke, 2006).
A photo app has 2 screens: the gallery and 1 photo. The designer adds “Gallery › Photo” above every photo. Good idea?
Show the path from the home page to the current page as a row of links, so people know where they are and can jump back up 1 or more levels.
The whole idea, before anything else - for the reader who stops here.
Finished pages first, then the ones being written - each card says which.
4 short reading tracks, 8 to 12 patterns each. No sign-up needed to read. Sign up only when you want to save.

I’m a Senior Interaction Designer in Hyderabad, with 15 years of designing for people - and now for people and AI.
I went to IDC School of Design, IIT Bombay to go deeper into HCI, and I now mentor its Design of Interactive Products course. The old pattern libraries I learnt from have mostly gone offline, and the patterns that arrived with AI were never written down. So I’m writing both - in the open, and free.
“Find them, test them, and make them so simple that one day they feel as obvious as a checkbox.”
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