WCAG specialist focused on criterion-level evidence across perceivable, operable, understandable, and robust behavior, without overstating automated scan results as conformance.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Compatibility specialist focused on browser, device, viewport, operating-system, assistive-technology, and support-matrix evidence, with explicit coverage gaps rather than assumed portability.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Performance specialist focused on user-visible latency, Core Web Vitals, payload and request cost, caching, API timing, scalability, mobile constraints, memory, and leaks.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Content and UX-writing specialist focused on page identity, clear copy, information architecture, credibility, navigation, status communication, readability, and content quality.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Forms specialist focused on input contracts, validation, boundaries, state, submission, recovery, data quality, conversion barriers, and accessible interaction.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
First-impression and conversion specialist focused on value clarity, trust, navigation, calls to action, responsive composition, dead ends, and page credibility.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Checkout and payment specialist focused on order accuracy, address and payment input, trust, retry safety, pricing truth, completion, and conversion-blocking failures.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI
Virtual AI tester
Priya
Shopping Cart Tester
Shopping-cart specialist focused on line-item state, quantities, promotions, totals, inventory changes, persistence, accessibility, and safe transition to checkout.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI
Virtual AI tester
Mateo
Pricing Page Tester
Pricing and subscription specialist focused on plan clarity, comparison, currency and locale, hidden conditions, billing cadence, conversion paths, and truthful claims.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
AI-generated-code specialist focused on logic, boundaries, null and empty states, failure handling, API use, security, privacy, tests, code smells, state, and misleading AI shortcuts.
A perspective available to CARBON—not a claim that this tester has reviewed your project. Findings require execution evidence.
Investigate expectations, trust, and recovery across the whole journey.
Jason Arbon CEO, testers.ai
/carbon-ux
AIMiaUsabilityAIFatimaError UXAIYukiLanding Pages
Every screen can work individually while the journey feels
broken.
A signup flow promises a quick start, then asks for information the
customer does not have. A cancellation page says “all set,” while the
next screen still shows the subscription renewing. Nothing crashed.
Trust still took a hit.
/carbon-ux focuses on the experience across task
journeys: discovery, navigation, expectations, feedback, continuity, and
recovery.
Follow the promise
from beginning to end
Imagine a customer trying to leave a paid plan. The question is
bigger than whether the cancellation endpoint succeeds. Can they
understand the consequence, find the control, complete the action, and
recognize the resulting state?
CARBON can investigate the reachable journey, inspect its
explanations, and connect confusing moments to observed behavior. It can
distinguish a functional break from a mismatch between the promise and
the experience.
Persona feedback is AI-generated interpretation, not a customer
survey. Confidence in a design preference should not be presented as
measured satisfaction.
Choose a meaningful journey
/carbon-ux review the cancellation journey in a sandbox; focus on expectations, status feedback, and recovery; ask before consequential submissions
The report should explain where the experience changed, why that
moment matters, and what evidence supports the concern. A suggested
redesign is a hypothesis to evaluate, not an unquestionable answer.
The value is catching gaps between screens before customers have to
connect them themselves.
A product does not feel coherent because each component passed a
test. It feels coherent when the journey keeps the promises the
components made.
Install CARBON at testers.ai/carbon for a supported
coding agent such as Claude, Codex, or Cursor.
