Common Crawl Index
Large-scale public web crawl dataset and index.
- reviewed
- Apr 24, 2026
How this source is shaped
Powerful for advanced research and large-scale discovery, but less immediately user-friendly than Wayback. Best used for backend enrichment, not as a first public-facing mini tool.
- Source type
- Dataset
- Access model
- Free
- Pricing model
- Free Public Web Crawl Data
- API available
- Yes
- Requires account
- No
- Risk level
- Low
- Sensitivity
- Normal
Review dimensions
Each dimension is graded on a 0–10 scale. The overall score is a weighted aggregate.
Weighted aggregate across the eight review dimensions.
Where this source fits
What analysts use it for, and — just as important — where it does not belong.
- large_scale_web_research
- domain_discovery
- seo_research
- dataset_analysis
- data_scientists
- seo_researchers
- developers
- researchers
- simple_user_facing_lookup
- real_time_checks
Editorial take
Our qualitative read on the source — tone, framing and trust posture.
Commercially interesting for advanced reports, but not the easiest starting point. Great second-layer enrichment.
Ethics and compliance
Access, licensing and sensitive-data considerations for this source.
Do not overstate completeness. Common Crawl is sampled and crawl-dependent.
Large-scale processing requires infrastructure planning and responsible rate usage.