Foglift
All Comparisons
Foglift vs PageSpeed Insights
Both tools are free. PageSpeed Insights focuses on performance. Foglift uses PageSpeed data AND adds SEO scoring, GEO analysis, security headers, and 29 standalone tools.
| Feature | Foglift | PageSpeed Insights |
|---|---|---|
| Price | Free forever | Free |
| Core Web Vitals | ✓ Via PageSpeed API | ✓ Native (lab + field data) |
| GEO / AI search score | ✓ 7-check GEO score | ✕ Not available |
| SEO audit | ✓ Full SEO score with A-F grades | ✓ Basic SEO checklist (10 items) |
| Security headers | ✓ 6 headers + security grade | ✕ Not checked |
| AI crawler detection | ✓ GPTBot, ClaudeBot check | ✕ Not checked |
| Accessibility audit | ✓ 15 WCAG checks | ✓ Accessibility score |
| Schema/structured data | ✓ JSON-LD depth analysis | ✓ Basic structured data check |
| Standalone tools | 29 free tools | ✕ Single audit only |
| PDF export | ✓ Branded PDF report | ✕ No export |
| API access | ✓ Free REST API | ✓ PageSpeed API (quota limited) |
| MCP server | ✓ For AI coding assistants | ✕ Not available |
| Site comparison | ✓ Compare two URLs | ✕ Single URL only |
| Monitoring | Growth plan: weekly alerts | ✕ One-time test |
| Field data (CrUX) | ✕ Lab data only | ✓ Real user data (Chrome UX Report) |
| Treemap view | ✕ Not available | ✓ JavaScript bundle treemap |
Choose Foglift when...
- ✓You want a complete website health check (not just performance)
- ✓You need to understand your AI search readiness (GEO score)
- ✓You want security header analysis and grading
- ✓You need to compare two websites side by side
- ✓You want a branded PDF report for clients
- ✓You need standalone tools (schema generator, robots.txt, etc.)
Choose PageSpeed Insights when...
- →You need real user field data from Chrome UX Report (CrUX)
- →You want the JavaScript bundle treemap visualization
- →You need the most granular Lighthouse performance diagnostics
- →You want to see specific optimization opportunities (image compression, unused CSS, etc.)
- →You need Origin Summary data across all pages
How Foglift Uses PageSpeed Under the Hood
Foglift actually uses the Google PageSpeed Insights API as part of its scan engine. When you scan a URL on Foglift, we pull Core Web Vitals data from PageSpeed and combine it with our own checks for SEO, GEO, security, and accessibility.
This means you get the same performance data you'd see on PageSpeed Insights, plus five additional dimensions that PageSpeed doesn't cover:
SEO Score
Title tags, meta descriptions, headings, canonical URLs, structured data
AI Readiness Score
AI crawler access, citation formatting, FAQ detection, entity markup
Security Grade
HSTS, CSP, X-Frame-Options, Referrer-Policy, Permissions-Policy
Why GEO Matters in 2026
In 2026, AI-powered search engines (ChatGPT, Perplexity, Google AI Overviews) drive an increasingly large share of web traffic. PageSpeed Insights was built before this shift — it has no way to check if your site is optimized for AI citation.
Foglift's GEO score fills this gap. It checks whether AI crawlers can access your site, whether your content is structured for extraction, and whether your meta tags are descriptive enough for AI summarization. This is the fastest-growing dimension of website optimization, and it's completely invisible to PageSpeed Insights.
The Bottom Line
PageSpeed Insights is the gold standard for performance testing. Foglift is its complement — use both. Run PageSpeed for deep performance diagnostics and field data, then run Foglift for the SEO, GEO, and security dimensions that PageSpeed doesn't touch.
Frequently asked questions
What is the main difference between Foglift and PageSpeed Insights?
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PageSpeed Insights is Google's performance-focused tool with real user data (CrUX). Foglift covers performance plus GEO analysis, AI search readiness scoring, security grading, and developer tools — going well beyond performance metrics.
Is Foglift more affordable than PageSpeed Insights?
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Foglift offers free unlimited Website Audits with no credit card required, and paid monitoring plans start at $49/mo. PageSpeed Insights starts at Free. Foglift includes SEO analysis, AI Readiness scoring, API, CLI, and MCP access on all tiers.
Do Foglift and PageSpeed Insights both offer free plans?
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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. PageSpeed Insights starts at Free. Check each tool's website for current plan details.
Which is better for SEO and AI search optimization: Foglift or PageSpeed Insights?
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Foglift combines traditional SEO auditing with AI search readiness scoring (GEO) in a single tool — something most competitors, including PageSpeed Insights, 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 PageSpeed Insights over Foglift?
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Consider PageSpeed Insights if you need: real user field data from Chrome UX Report (CrUX), JavaScript bundle treemap visualization, most granular Lighthouse performance diagnostics. PageSpeed Insights 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.