Page Speed Conversion ROI Impact Calculator
Calculate lost conversions and compound monthly revenue recovered by accelerating page speed. Fine-tune your business inputs and estimate your marketing performance.
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How Page Speed Affects Revenue and SEO Rankings
Page speed directly impacts both conversions and SEO rankings. Google uses Core Web Vitals (LCP, CLS, INP) as ranking signals. A 1-second delay in page load reduces conversion rate by approximately 7%, and pages loading above 3 seconds lose 40% of visitors before they even see the content.
Core Web Vitals Thresholds (Google's Standards)
- LCP (Largest Contentful Paint): Under 2.5 seconds (Good), 2.5–4s (Needs Improvement), above 4s (Poor)
- CLS (Cumulative Layout Shift): Under 0.1 (Good), 0.1–0.25 (Needs Improvement), above 0.25 (Poor)
- INP (Interaction to Next Paint): Under 200ms (Good), 200–500ms (Needs Improvement), above 500ms (Poor)
Common Page Speed Issues on Indian Business Websites
- Uncompressed images (the #1 issue on Indian business websites)
- No CDN — serving assets from a single server far from users
- Render-blocking JavaScript loaded in the document head
- Excessive third-party scripts (chat widgets, analytics, ad pixels)
- No lazy loading on below-the-fold images and videos
Page speed is a core component of technical SEO consulting and a first-priority checklist item in every website development project.
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