About the Index
A public benchmark for social preview reliability
We analyze HTML metadata quality across a stable ecommerce cohort. Cohort metrics are public; domain lookup is diagnostic only.
How the index worksAnalyze a Domain
Subdomains and full URLs are normalized automatically.
Public Benchmark
State of Web Previews — Q1 2026
Social Preview Reliability Index
A public benchmark of social preview reliability across high-traffic retail ecommerce domains.
Based on 647 benchmark-eligible retail ecommerce domains selected from the Tranco Top 200k list.
Snapshot: Feb 27, 2026.
Snapshot full_20260227-002835Feb 27, 2026
Primary Findings
High-Risk Share (<40)
27.7%
Domains scoring below 40 (concentrated preview reliability risk).
Missing OG Image
18.05%
Product pages missing og:image.
Unreliable Product Checks
27.66%
Product checks classified as Unreliable.
Median Score
79.0
Cohort median reliability score (0–100).
Plain-language Readout
- 27.7% of benchmark domains score below 40.
- 18.05% of product pages lack an og:image.
- Median preview reliability score is 79.0.
Scores reflect structural preview reliability (0–100). Lower scores indicate higher risk of broken or degraded social link previews.
Secondary Metrics
Interquartile Range
30.3 → 83.6
P25 → P75.
Resilient Share (80+)
47.1%
Exposure (Base)
0.0034
Interval: 0.0017 / 0.0034 / 0.0057. Normalized cohort-level estimate based on unreliable product share.
Risk Distribution
Distribution across fixed score bands shows how reliability risk is concentrated within the cohort.
- 0-20120
- 20-4059
- 40-6023
- 60-80140
- 80-100305
What to read next
Explore findings for deeper pattern analysis.
Review methodology for measurement details and eligibility rules.
Interpretation note
Gap measures divergence between homepage and product medians, not absolute quality.
Use score distribution and unreliable rates as primary risk signals.
Related analysis
These articles expand on patterns observed in the benchmark.