Loading skill
Install any skill in seconds. Free to start, no credit card required.
Get Started Free →wondelai/ux-heuristics
Evaluate and improve interface usability using heuristic analysis.
Passed 23 of 23 test cases with the skill, and 19 of 23 without it.
and 2 more in the full report
4 fixed19 passed either way0 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.
We have a welcome banner on our SaaS dashboard that reads: 'Welcome to our platform! We are so excited to have you here. Please feel free to explore our features and kindly let us know if you have any feedback.' Apply web usability copywriting principles to eliminate unnecessary fluff and return the optimized concise copy.
| Checked | Without skill | With skill |
|---|---|---|
| Removes conversational welcome greetings and polite fluff. | Missed | Passed |
| Presents concise text focused on user utility. | Passed | Passed |
The instructions your model reads when the skill loads.
Practical usability principles for evaluating and improving user interfaces. Users don't read, they scan; they don't make optimal choices, they satisfice; they don't figure out how things work, they muddle through.
"Don't Make Me Think" — every page should be self-evident. If something requires thinking, it's a usability problem. Users have limited patience and cognitive bandwidth, so design for the scanning, satisficing, and muddling-through behavior described above.
Goal: 10/10. Audit the interface, rate every issue on the severity scale below, then score the interface from its Quick Diagnostic results: start at 10 and subtract per failed diagnostic row, weighted by the worst severity it triggers (catastrophic/major rows cost ~2, minor/cosmetic ~1). Bands: 9-10 = no severity-3+ issues and ≤1 failed diagnostic row; 6-8 = some major issues or several failed rows; 3-5 = a catastrophic issue or many failed rows; ≤2 = core tasks blocked. Always state the current score, the highest-severity issues, and the specific fixes needed to reach 10/10.
Laws 1-3 are Krug's Three Laws of Usability; #4, the Trunk Test, is his navigation orientation check.
Core concept: Every question mark that pops into a user's head adds cognitive load and distracts from the task.
Why it works: Users are on a mission — they don't want to puzzle over labels or decode clever marketing language. The less thinking required, the more likely they complete the task.
Key insights:
Product applications:
| Context | Application | Example |
|---|---|---|
| Navigation labels | Self-evident names | "Get directions" not "Calculate route to destination" |
| CTAs | Action verbs users understand | "Sign in" not "Access your account portal" |
| Error states | Tell users what to do next | "Check your email format" not "Validation error" |
Copy patterns:
test cases passed, vs 19 / 23 without
Published skills whose descriptions closely match this one, with their headline benchmark lift.
More skills from the same source and nearby in the registry, with their headline benchmark lift.