B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
7%
7% -- sales lift after inp improvement for redBus (2025)
When redBus improved its INP by 72%, it saw a 7% lift in sales.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
7%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Google web.dev
Primary
Tier A
https://www.harper.fast/resources/inp-is-the-new-seo-north-star-how-to-optimize-for-googles-most-imp… ↗
Source Article
INP Is the New SEO North Star: How to Optimize for Google’s Most Important Metric
For years, search engine optimization has revolved around keywords, backlinks, and site structure. With the introduction of Interaction to Next Paint (INP) as the official Core Web Vitals metric for responsiveness in March 2024, Google redefined the priorities for performance-based SEO. INP centers …
Original Research
Google web.dev
· Original study ↗
Methodology
Official web.dev case study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
redBus: 7% sales lift after inp improvement. Source: Google web.dev (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/redbus-inp-improvement-sales-lift
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<blockquote cite="https://lighthousedata.io/data/redbus-inp-improvement-sales-lift" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>7%</strong> -- sales lift after inp improvement for redBus<br><small>Source: Google web.dev (2025) · <a href="https://lighthousedata.io/data/redbus-inp-improvement-sales-lift" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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