B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
40%
40% -- seo ranking boost percentage for Websites using proper internal linking (Authority Hacker study) (2025)
Proper internal linking can boost search rankings by up to 40% according to a study of over 1 million websites.
- Figure represents an upper bound ('up to 40%')
- Secondhand citation of an Authority Hacker study
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
40%
Unit
Percentage
Data Vintage
2025
Entity
Sample Size
1,000,000
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
Authority Hacker
Primary
Tier C
https://digitrio.com.sg/internal-linking-seo/ ↗
Source Article
Internal Linking for SEO: Secret to Higher Ranking (2025)
Did you know that internal linking could be the game-changer your SEO strategy needs?
- 40% Boost Potential: Authority Hacker’s study of over 1M+ websites found that proper internal linking can boost rankings by up to 40%.
- Better User Experience: Guide visitors seamlessly through your site, increa…
Original Research
Authority Hacker
· Original study ↗
Methodology
Article cites an Authority Hacker study of over 1 million websites; figure is an upper-bound ('up to 40%') claim reported secondhand; exact study date not stated in article
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Websites using proper internal linking (Authority Hacker study): 40% seo ranking boost percentage. Source: Authority Hacker (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/internal-linking-seo-ranking-boost-40
HTML Embed
<blockquote cite="https://lighthousedata.io/data/internal-linking-seo-ranking-boost-40" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- seo ranking boost percentage for Websites using proper internal linking (Authority Hacker study)<br><small>Source: Authority Hacker (2025) · <a href="https://lighthousedata.io/data/internal-linking-seo-ranking-boost-40" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.