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.
Every translation key exists. The build passes. The button still says
the opposite of what it does.
Localization quality is not a key-counting exercise.
/carbon-localization connects translated strings to
their application context: the action, the surrounding text, the user's
task, and the product terminology.
Context changes the answer
“Charge” could describe a payment, a battery, or an instruction to
take responsibility. A technically plausible translation can be wrong
for the feature. A negative sentence can lose its negation. A plural can
sound fine for one item and fail for zero.
The agent can compare source and localized strings, inspect
placeholders and catalogs, and exercise available localized views.
Layout, right-to-left behavior, formatting, and error recovery may
expose problems the catalog alone cannot show.
Back-translation is a useful clue, not proof of correctness. Cultural
nuance, regulated terminology, and uncertain linguistic judgments still
need appropriate human review.
Review a
workflow, not a spreadsheet in isolation
/carbon-localization review Spanish and Arabic checkout strings in context; inspect payment meaning, plurals, placeholders, and recovery text
The report should include the exact string, locale, context, why the
meaning may be wrong, a proposed correction, and a verification step. It
should distinguish an observed mismatch from a judgment that needs a
fluent domain reviewer.
The convenience of AI is being able to consider the words and the
application together while the feature is still being built.
Shipping all the keys is easy to count. Shipping the right meaning is
what customers experience.
Install CARBON at testers.ai/carbon for a supported
coding agent such as Claude, Codex, or Cursor.
