B
Evidence Grade B
Graded
under review
Safe to Cite
Current
29%
29% -- share of websites with duplicate content for websites on the web (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
29%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
200,000,000
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
inclick.pl
Primary
Tier C
https://inclick.pl/wysokie-pozycje-przy-duplicate-content/ ↗
Source Article
Wysokie pozycje przy duplicate content
Z naszego doświadczenia z content marketingiem na polskim rynku wynika, że firmy publikujące regularnie budują widoczność organiczną 3x szybciej niż te działające ad hoc. Jeśli tworzysz stronę WWW i interesowałeś się podstawami optymalizacji pod wymagania wyszukiwarki Google, to z pewnością nie raz …
Original Research
inclick.pl
· Original study ↗
Methodology
Study analyzed 200 million web pages; original study date not specified in article
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
websites on the web: 29% share of websites with duplicate content. Source: inclick.pl (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/websites-duplicate-content-29pct
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<blockquote cite="https://lighthousedata.io/data/websites-duplicate-content-29pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>29%</strong> -- share of websites with duplicate content for websites on the web<br><small>Source: inclick.pl (2026) · <a href="https://lighthousedata.io/data/websites-duplicate-content-29pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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