Design proof 02
Checkout friction audit
An annotated checkout study that names hierarchy, validation, trust, and action-priority failures before proposing changes.
Repository-owned design study. The visual is proof of direction and composition, not a claim of client delivery or production acceptance.
Checkout
Delivery details
Email address
Error appears after submit only.
Delivery options
Standard
2–4 days
Free
Express
Tomorrow
32K
The existing flow is preserved as evidence. The audit names failures and correction direction without silently replacing the interface.
Prioritized evidence map
Diagnose before changing.
Severity, observation, evidence, impact, and bounded correction remain distinct.
- 01Critical
Validation arrives too late
- Observation
- The email error appears only after the user submits the full step.
- Evidence
- Required field remains visually neutral before submission.
- Impact
- Users can complete the step believing the order is ready to continue.
- Correction direction
- Expose field state at the point of failure and preserve the current checkout structure.
- 02Important
Delivery choices look equivalent
- Observation
- Speed, price, and selected state do not create a clear comparison.
- Evidence
- Both options use the same weight, border, and supporting-copy treatment.
- Impact
- Users must decode the choice instead of comparing it quickly.
- Correction direction
- Strengthen selected state, price hierarchy, and delivery-time association.
- 03Important
Primary action competes with navigation
- Observation
- Back and Continue receive nearly equal visual emphasis.
- Evidence
- Both controls occupy equal width in the final action row.
- Impact
- The intended next action is less immediate at the decision point.
- Correction direction
- Preserve both actions while making continuation visually dominant.
Proof details
Starting brief
Audit a checkout flow with weak validation, competing actions, and unclear order confidence without silently redesigning it.
The visual is a synthetic audit specimen built for this route; it does not claim measured conversion impact.
Priority
Errors → trust → action hierarchy
Method
Evidence-backed issue classification
Output
Severity, cause, bounded correction
Gate
No redesign without proven scope
Result
A prioritized evidence map that separates blocking usability failures from optional visual refinement.
Refuses
- Aesthetic-only critique
- Invented user research
- Unbounded visual rewrite