Common Crawl Index
Large-scale public web crawl dataset and index.
- slug
- common-crawl-index
- priority
- 78
- 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
- Integration phase
- Phase 2
- Integration priority
- 78
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.
Integration stance
Build, buy or defer. What shape the product integration would take, and why.
Use after Wayback: domain footprint, historical URL discovery, content sampling and SEO intelligence.
Ethics and compliance
What to handle carefully, and what must not ship without sign-off.
Do not overstate completeness. Common Crawl is sampled and crawl-dependent.
Large-scale processing requires infrastructure planning and responsible rate usage.
Metadata
Catalog-side technical footer. Values as recorded in the source row.
- source owner
- Common Crawl Foundation
- report module
- large_scale_web_footprint
- integration candidate
- true