Foglift
All Comparisons
Foglift vs Google Lighthouse
Lighthouse measures performance, accessibility, and SEO basics. Foglift goes further with GEO analysis, AI search readiness, security grading, and 29 standalone tools — all free.
| Feature | Foglift | Lighthouse |
|---|---|---|
| Price | Free forever | Free (built into Chrome) |
| GEO / AI search analysis | ✓ 7-check GEO score | ✕ Not available |
| AI crawler detection | ✓ GPTBot, ClaudeBot, etc. | ✕ Not checked |
| Performance audit | ✓ Core Web Vitals via PageSpeed API | ✓ Comprehensive performance metrics |
| SEO audit | ✓ Full SEO score with A-F grades | ✓ Basic SEO checklist |
| Accessibility audit | ✓ 15 WCAG checks | ✓ Comprehensive a11y audit |
| Security headers | ✓ 6 headers + security grade | ✕ Not checked |
| Schema/structured data | ✓ JSON-LD depth analysis | ✓ Basic structured data check |
| Standalone tools | 29 free tools | ✕ Single audit only |
| PDF export | ✓ Branded PDF report | ✓ JSON/HTML export |
| API access | ✓ Free REST API | ✓ CI/CD integration (npm) |
| MCP server | ✓ For AI coding assistants | ✕ Not available |
| Blog / guides | 46+ SEO + GEO guides | Documentation only |
| Online scanner | ✓ No install needed | Chrome DevTools or PageSpeed Insights |
| Monitoring/tracking | Growth plan: daily monitoring | ✕ One-time audit only |
| Competitor comparison | ✓ Side-by-side site comparison | ✕ Single page only |
Choose Foglift when...
- ✓You want to know how your site performs in AI search (ChatGPT, Perplexity, Google AI Overviews)
- ✓You need a quick online scan without installing anything
- ✓You want security header analysis and grading
- ✓You need standalone SEO tools (robots.txt generator, schema generator, etc.)
- ✓You want to compare two websites side by side
- ✓You need an API for automated scanning in CI/CD
Choose Lighthouse when...
- →You need the most granular performance metrics (Time to Interactive, Speed Index, etc.)
- →You want detailed accessibility axe-core audit results
- →You need PWA (Progressive Web App) compliance checking
- →You want to audit locally (before deployment)
- →You need the npm package for CI integration with custom configs
The GEO Gap: What Lighthouse Misses
Google Lighthouse was built for a world where Google was the only search engine that mattered. In 2026, AI-powered search engines like ChatGPT, Perplexity, Google AI Overviews, and Claude are driving a growing share of traffic and citations.
Foglift's GEO score checks 7 factors that determine whether AI search engines can find, understand, and cite your content:
- • AI Crawler Access — Are GPTBot, ClaudeBot, and PerplexityBot allowed in robots.txt?
- • Structured Data Depth — Does your schema markup provide enough context for AI extraction?
- • FAQ Detection — Do you have FAQ sections that AI can directly cite?
- • Entity Markup — Are key entities (people, organizations, products) marked up?
- • Content Structure — Is your content organized with clear headings for AI parsing?
- • Citation Formatting — Are statistics and claims formatted for AI quotation?
- • Meta Quality — Are your meta tags descriptive enough for AI summarization?
Security Headers: A Blind Spot for Lighthouse
Lighthouse checks if your site uses HTTPS, but it doesn't audit individual security headers. Foglift checks 6 critical security headers and gives an overall security grade:
- • HSTS (HTTP Strict Transport Security)
- • X-Content-Type-Options
- • X-Frame-Options / CSP frame-ancestors
- • Content-Security-Policy
- • Referrer-Policy
- • Permissions-Policy
The Bottom Line
Lighthouse is an excellent performance auditing tool. Foglift complements it by adding GEO analysis, security grading, and 29 standalone tools. Use both — run Lighthouse for deep performance metrics, and Foglift for the AI-search and security dimensions Lighthouse doesn't cover.
Frequently asked questions
What is the main difference between Foglift and Google Lighthouse?
+
Lighthouse measures performance, accessibility, and SEO basics. Foglift goes further with GEO analysis, AI search readiness, security grading, and 29 standalone tools — all free. Lighthouse was designed for a pre-AI search era.
Is Foglift more affordable than Google Lighthouse?
+
Foglift offers free unlimited Website Audits with no credit card required, and paid monitoring plans start at $49/mo. Google Lighthouse starts at Free (built into Chrome). Foglift includes SEO analysis, AI Readiness scoring, API, CLI, and MCP access on all tiers.
Do Foglift and Google Lighthouse both offer free plans?
+
Yes, both tools offer free options. Foglift provides free unlimited Website Audits with no signup and no credit card, including full SEO and AI Readiness scoring. Google Lighthouse starts at Free (built into Chrome). Check each tool's website for current plan details.
Which is better for SEO and AI search optimization: Foglift or Google Lighthouse?
+
Foglift combines traditional SEO auditing with AI search readiness scoring (GEO) in a single tool — something most competitors, including Google Lighthouse, do not offer at this price point. If you need to understand how AI search engines like ChatGPT, Perplexity, and Gemini see your website, Foglift is purpose-built for that.
When should I choose Google Lighthouse over Foglift?
+
Consider Google Lighthouse if you need: comprehensive performance metrics (Time to Interactive, Speed Index), detailed accessibility axe-core audit, PWA (Progressive Web App) compliance checking. Google Lighthouse is a strong choice for those specific use cases. Foglift is the better fit if you want free unlimited scans, combined SEO + GEO analysis, or developer tools (API, CLI, MCP).
How we compare
This comparison evaluates both tools across features, pricing, and AI search optimization capabilities. Our methodology draws on peer-reviewed research into what drives AI engine citations:
- Aggarwal et al., “How Search Engines Integrate AI Overviews,” KDD 2024 — found that structured data and entity clarity improve AI answer extraction rates.
- SE Ranking study of 129,000 domains (2025) — identified referring domains and brand web mentions as the strongest predictors of AI citations.
- Chatoptic correlation study (2025) — demonstrated only a 0.034 correlation between Google rank and ChatGPT citation, confirming AI visibility is an independent channel from traditional SEO.
- Zyppy freshness analysis (2025) — 71% of ChatGPT citations come from 2023–2025 content; pages updated within 30 days see a 3.2× citation lift.
Feature and pricing data is verified against each tool's public website. Last updated April 2026.