Site Information
edx.org
Link authority for edx.org (registrable domain: edx.org) from the Common Crawl web graph: PageRank and harmonic centrality history since 2017, current scores, and the site's top backlink sources.
Link authority data (PageRank, harmonic centrality) and backlinks come from the Common Crawl web graph.
Current Scores
Web-graph authority (0-100)
Domain scores measure edx.org as a whole: every subdomain's links rolled up into one node of Common Crawl's domain-level web graph. Host scores measure the exact hostname edx.org. WWW scores cover the www variant of that hostname, which the graph tracks as its own entry since January 2026 (before that, www and bare host were merged). A big gap between domain and host usually means the domain's authority lives on other subdomains. PageRank is link-endorsement authority: how much weight the sites linking here carry themselves. Harmonic centrality measures reach: how close this site sits to the rest of the web when following links, which favors broadly connected sites over ones boosted by a few heavy linkers. All are normalized 0 to 100 within each crawl snapshot; a dash means that series does not exist for this site.
50
Domain PageRank
26
Host PageRank
-
WWW PageRank
97
Domain Harmonic Centrality
95
Host Harmonic Centrality
-
WWW Harmonic Centrality
Site Intelligence
Homepage
What edx.org presents on its own homepage: the page title, description, and the social share markup it publishes. Pulled from https://edx.org.
| Title | edX | Online Courses, Certificates & Degrees from Leading Institutions |
|---|---|
| Description | Find the online learning path for you, delivered by world-class institutions like Harvard, Google, Amazon, and more. |
| OG Title | edX | Online Courses, Certificates & Degrees from Leading Institutions |
| OG Description | Find the online learning path for you, delivered by world-class institutions like Harvard, Google, Amazon, and more. |
| OG Site Name | edX |
| Twitter Title | edX | Online Courses, Certificates & Degrees from Leading Institutions |
| Twitter Card | summary |
Site Intelligence
Social accounts and contact points
Where this site maintains a presence and every reachable route its homepage exposes: social accounts, contact pages, addresses, and content feeds.
| edx | |
| X | edXOnline |
| edx (business) | |
| Googleplay | org.edx.mobile |
Site Intelligence
Structured data (JSON-LD)
The schema.org markup this homepage publishes: the machine-readable identity search engines and AI systems read. Types found: Organization.
JSON-LD block (37,181 bytes)
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Authority over time
Every Common Crawl web-graph release since 2017, roughly quarterly. The domain series goes back to 2017; Common Crawl only began publishing the host-level graph in 2020, so host lines start there. Click a legend entry to show or hide that line. Flat lines are normal for established sites; watch for sustained rises or drops, which track real gains or losses in who links here.
A note on www: through the end of 2025 the source web graph merged www and non-www hostnames into the bare name, so one host line covers both. Starting in January 2026 the graph splits them into separate entries, which is why www can carry its own scores going forward.
Backlink Data
Backlink counts
Unique linking domains seen in Common Crawl's link graphs. This is a different dataset than the 0-100 authority scores above: these are raw counts, host-level for edx.org and domain-level for edx.org with all its subdomains combined. Common Crawl covers a large sample of the web, not all of it, so treat counts as comparable between sites rather than absolute totals.
853
Host Backlinks
23,750
Domain Backlinks
Backlink Data
Top backlinks in the domain graph
Common Crawl publishes two link graphs. The DOMAIN graph connects whole domains: every link from any page of one domain to any page of another. This table shows the highest-authority domains linking to edx.org (including its subdomains), ranked by the linker's PageRank. The table shows the top 1,000; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.
Backlink Data
Top backlinks in the host graph
The HOST graph connects exact hostnames, so subdomains count separately. This table shows the highest-authority hosts linking to edx.org specifically, ranked by the linker's PageRank. The table shows the top 853; the download carries the full stored list (up to 10,000 linkers) as JSON. Click a linker for its own site profile.