B
Evidence Grade B
Graded
under review
Safe to Cite
Recent
25%
25% -- sales increase from usability improvement for company websites (2025)
A small increase in the usability of a company's website led to a 25% increase in sales according to a McKinsey study.
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Lighthouse Research Team
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Evidence graded
Value
25%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
McKinsey & Company
Primary
Tier C
https://blackflagcreative.com/blog/design-systems-the-backbone-of-modern-digital-experiences/ ↗
Source Article
Design Systems - The Backbone of Modern Digital Experiences
In the complex world of digital design, a coherent and efficient design system can be a massive game-changer. Design Systems ensure that all design elements are cohesive, making it easier for teams to maintain a unified look and feel across multiple platforms. The key to consistency and efficiency i…
Original Research
McKinsey & Company
· Original study ↗
Methodology
Cited as a McKinsey & Company study; specific report not identified
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
company websites: 25% sales increase from usability improvement. Source: McKinsey & Company (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/website-usability-sales-increase-mckinsey
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<blockquote cite="https://lighthousedata.io/data/website-usability-sales-increase-mckinsey" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>25%</strong> -- sales increase from usability improvement for company websites<br><small>Source: McKinsey & Company (2025) · <a href="https://lighthousedata.io/data/website-usability-sales-increase-mckinsey" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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