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CLI comparison

VertaaUX vs Google Lighthouse

Lighthouse focuses on performance, SEO, and PWA best-practices with a basic accessibility audit. VertaaUX covers 7 UX dimensions — usability, clarity, information architecture, accessibility, conversion, semantics, keyboard — with AI-powered fix suggestions and baseline regression detection.

Google Lighthouse homepageCategory: performanceUpdated 2026-04-17

Where VertaaUX wins

  • 7 audit categories vs Lighthouse's 5 (adds usability, clarity, IA, conversion, semantics as first-class)
  • Business-impact scoring per issue (e.g. "30% higher exit rate for AT users") — Lighthouse only surfaces severity
  • Ready-to-paste HTML/CSS fixes with effort estimates — Lighthouse links to docs
  • PR comments with regression detection against a baseline — Lighthouse CI supports this but configuration is heavier
  • Works offline on localhost through CDP-connect — Lighthouse CI needs a deployed URL or complex local config

Where Google Lighthouse wins

  • Performance metrics (LCP, TBT, CLS) are the most granular and trusted in the industry
  • Built into Chrome DevTools — zero install for a one-off audit
  • Free and open-source with no account required
  • Lighthouse CI is a mature GitHub Actions ecosystem

Feature matrix

FeatureGoogle LighthouseVertaaUXNote
Performance metrics (Core Web Vitals)VertaaUX includes perf signals but Lighthouse is more granular
Accessibility checks (axe-core)
WCAG 2.2 heuristic coverage beyond axe
Usability scoring (layout, spacing, CTA)
Conversion-flow analysis
AI-generated fix code
Business-impact estimates
PR comment integrationLighthouse CI has it; extra setup
Baseline regression detection
Localhost audit without deploy
Machine-readable output (JSON/SARIF)
Free tier3 audits/day guest, or free tier with account

When to choose Google Lighthouse

Use Lighthouse when your primary concern is Core Web Vitals for SEO, or when you need deep performance tracing (Chrome DevTools Performance panel). It remains the reference implementation for web perf.

When to choose VertaaUX

Use VertaaUX when you want a single CI gate covering UX, accessibility, and conversion together — not just performance. Designers and PMs parse VertaaUX's issue descriptions without needing web-perf vocabulary.

Pricing

Google Lighthouse

Free, open-source. Lighthouse CI server is self-hosted (free) or Google PageSpeed Insights (free API).

VertaaUX

3 guest audits/day free. Free account tier with unmetered localhost audits. Paid plans for higher quotas, deep mode, and baselines.

Migration

Most teams run Lighthouse and VertaaUX in parallel at first — Lighthouse for perf, VertaaUX for UX/a11y/conversion. After a month, many consolidate on VertaaUX since its reports cover what stakeholders actually read.

Before (Google Lighthouse)

lhci autorun --collect.url=https://example.com --assert.preset=lighthouse:recommended

After (VertaaUX)

vertaa audit https://example.com --mode standard --fail-on error --threshold 80

Frequently Asked Questions

Try VertaaUX in your next CI run

3 guest audits per day without an account, unmetered localhost audits, and a full GitHub Action, CLI, and Docker image on day one.

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