B
Evidence Grade B
Graded
under review
Safe to Cite
Current
69%
69% -- header bidding adoption rate for Top 10,000 websites (2026)
Attribution:
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Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
69%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
10,000
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
Kevel
Primary
Tier C
https://www.mile.tech/blog/ad-fill-rate ↗
Source Article
What is Ad Fill Rate – An Ultimate Guide for Publishers
Ad Optimization
TL;DR
In the current fast-paced digital era, online advertising has become a crucial aspect of the publishing industry. Publishers are always striving to monetize their content and increase their revenue streams. The aim here is to monetize every page view or impression at the best p…
Original Research
Kevel
· Original study ↗
Methodology
Cited by Mile from Kevel's Header Bidding Industry Index; sample is the top 10,000 websites; original report publication date not specified in the article.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Top 10,000 websites: 69% header bidding adoption rate. Source: Kevel (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/header-bidding-adoption-top-10000-sites
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<blockquote cite="https://lighthousedata.io/data/header-bidding-adoption-top-10000-sites" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>69%</strong> -- header bidding adoption rate for Top 10,000 websites<br><small>Source: Kevel (2026) · <a href="https://lighthousedata.io/data/header-bidding-adoption-top-10000-sites" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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