What powers crossref.org?
Last seen Jun 2026 · 60 technologies across 26 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| cross reference | #2 | 1,600 |
| crossref | #1 | 1,100 |
| ror | #5 | 570 |
| crossmark | #7 | 380 |
| plagiarism check free | #77 | 190 |
| sci hub se | #45 | 160 |
| digital object identifier | #68 | 130 |
| how to find doi | #3 | 130 |
| find doi | #2 | 120 |
| ojs | #15 | 110 |
| crossref doi | #1 | 97 |
| event data | #1 | 64 |
| xml sample | #4 | 58 |
| sally jennings | #1 | 52 |
| doi search by title | #1 | 52 |
| dois | #7 | 49 |
| identifier meaning | #99 | 47 |
| xml example | #5 | 41 |
| similarity score | #5 | 34 |
| reference links | #1 | 32 |
| redf | #51 | 31 |
| ref definition | #81 | 31 |
| orcid identifier | #88 | 31 |
| crossref similarity check | #1 | 27 |
| reference page | #93 | 25 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 75% desktop
- 25% phone
India
Germany
Indonesia
Spain
Netherlands
Australia
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
8.50 / 10 · ranked #2,472 of all domains
7,883 referring domains · OpenPageRank
Search traffic
6,200 est. monthly organic visits (US)
2,516 keywords in Google's top 30
Core Web Vitals
| LCP | 0.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- CDN: Amazon CloudFront
- Weight: 1.7 MB · 59 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| crossref.org | 24 |
| www.crossref.org | 24 |
| authenticator.crossref.org | 23 |
| status.crossref.org | 23 |
| crossmark.crossref.org | 22 |
| outreach.crossref.org | 22 |
| www.staging.crossref.org | 20 |
| search.crossref.org | 16 |
| community.crossref.org | 15 |
| manage.crossref.org | 13 |
| support.crossref.org | 12 |
| apps.crossref.org | 11 |
| www.eventdata.crossref.org | 11 |
| api.crossref.org | 10 |
| mr.crossref.org | 10 |
| doi.crossref.org | 8 |
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Recent changes
- dropped Emotion Sep 2025
- dropped Apache HTTP Server Aug 2025
- dropped CentOS Aug 2025