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← All coursesUI and UX for Engineers: Judging the Interfaces You Ship5 levels · 22 lessons

Passing contrast ratios that are still hard to read~8 min
Emphasis depends on what else is on the screen~7 min
One spacing value everywhere groups nothing~7 min
The 45 to 75 character line length comes from a book that cites no study~8 min
Contrast, hierarchy, spacing and type · Review~5 min

44 was never the rule~8 min
The ring you deleted was the only sign of where focus is~7 min
The placeholder was never a label~8 min
320 by 256, and it is not a phone~8 min
Touch targets, focus, forms and breakpoints · Review~5 min

Five users, one group, one task list~7 min
The answer is about the question~7 min
Clicks were never the cost~8 min
You are not the user · Review~5 min

A spinner shows that the interface is waiting, not what state it is in~9 min
Reduce is not remove~8 min
You designed one of them~8 min
Latency, motion and screen states · Review~5 min

The component asked for blue, not for danger~8 min
Every boolean you added doubled the surface~8 min
Shipped is not adopted~8 min
Design systems, not single screens · Review~5 min

Course

UI and UX for Engineers: Judging the Interfaces You Ship

Which UI numbers are requirements, which are conventions, and which nobody measured.

Start free: Passing contrast ratios that are still hard to read

The levels

Level I · 5 lessonsContrast, hierarchy, spacing and type