B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
30%
30% -- share of websites leaving alt text blank for websites (2025)
30% of websites leave alt text blank.
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Lighthouse Research Team
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Source verified
Evidence graded
Value
30%
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
60
Independence
30
Methodology
45
Freshness
95
Source
Search Engine Journal
Primary
Tier C
https://www.searchenginejournal.com/seo-best-practices-image-alt-text/451926/ ↗
Source Article
Boost Landscaping SEO With Smart Alt Text Strategies!
Introduction: The Hidden Power of Alt Text
When was the last time you searched for an image on Google? Perhaps you were looking for patio designs or ideas for a lush lawn. Behind every image that ranks on Google is a hidden yet powerful tool called alt text. For landscaping businesses, alt text is m…
Original Research
Search Engine Journal
· Original study ↗
Methodology
Cited stat, original source not explicitly named for this figure
Methodology documented
Segmentation
IndustryMedia
RoleSEO Specialist
Channelsearch
Cite this stat
Plain Text
websites: 30% share of websites leaving alt text blank. Source: Search Engine Journal (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/websites-blank-alt-text-30
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<blockquote cite="https://lighthousedata.io/data/websites-blank-alt-text-30" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>30%</strong> -- share of websites leaving alt text blank for websites<br><small>Source: Search Engine Journal (2025) · <a href="https://lighthousedata.io/data/websites-blank-alt-text-30" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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