🔍 Usability Audit
Describe a screen or flow and get a heuristic audit against Nielsen's 10 — each finding tagged with the heuristic, a severity and a concrete fix.
- Mapped to Nielsen's 10. Every finding names the exact heuristic it violates — not vague opinions.
- Severity-ranked & fixable. High / medium / low, each with a concrete fix you can ticket today.
- Words or screenshots. Paste a flow description or upload PNG/PDF mockups — the AI reads them directly.
See the quality — a real example
Sample only · no credits usedInput — screen described
Checkout page: shipping + payment on one screen. Card field shows a red border the moment you focus it, before typing. The only button says "Continue" with no order total nearby. A grey "Place order" appears after submit with no spinner, and clicking it twice creates two orders.
User goal: complete a first purchase without second-guessing whether it worked.
Output — heuristic findings
Submitting twice creates duplicate orders — double-charge risk.
Fix: disable the button on click, show an inline spinner, and dedupe with an idempotency key server-side.
The card field turns red on focus before any input, signalling an error that doesn't exist.
Fix: validate on blur or submit, not focus; reserve red for fields that actually failed.
No order total near the action and no loading state after "Place order" leave users unsure anything happened.
Fix: show the total beside the button and a clear pending/confirmed state after submit.
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