What powers hal.science?
Last seen Aug 2026 · 38 technologies across 20 categories
Advertising
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CDN
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LMS
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Miscellaneous
Programming languages
Security
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AI Crawlers
Blocks 21 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- Applebot Blocked
- OAI-SearchBot Blocked
- PerplexityBot Blocked
- PetalBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 12 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| data collection methods | #9 | 4,500 |
| 1948 palestinian exodus | #6 | 920 |
| intracluster correlation coefficient | #65 | 770 |
| intracluster correlation coefficient | #47 | 770 |
| data collection techniques | #20 | 720 |
| lrcs | #64 | 630 |
| hal | #10 | 370 |
| parthood | #44 | 350 |
| configuration interaction | #49 | 280 |
| xn | #53 | 260 |
| different research methods | #7 | 250 |
| oviposition | #9 | 220 |
| electrochemical impedance spectroscopy | #11 | 200 |
| latin hypercube sampling | #39 | 190 |
| digital micromirror device | #30 | 190 |
| bicubic spline | #3 | 160 |
| high altitude long endurance | #16 | 140 |
| tackiness | #13 | 130 |
| rope worm | #8 | 120 |
| sumatra tsunami | #45 | 100 |
| preliminary hazard analysis | #74 | 100 |
| preliminary hazard analysis | #74 | 100 |
| electrochemical impedance | #16 | 95 |
| body manipulation | #4 | 87 |
| gmsh | #4 | 86 |
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.
AI Crawlers
21 of 33 AI crawlers blocked
Audience
- 50% desktop
- 48% phone
- 2% tablet
France
India
Congo - Kinshasa
United States
Italy
Algeria
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
8.48 / 10 · ranked #2,657 of all domains
8,267 referring domains · OpenPageRank
Search traffic
25,600 est. monthly organic visits (US)
50,511 keywords in Google's top 30
Core Web Vitals
| LCP | 2.1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 10.7 MB · 48 requests
Homepage as crawled by the HTTP Archive, Aug 2026.
Subdomains
| Host | Techs |
|---|---|
| enva.hal.science | 18 |
| imt-nord-europe.hal.science | 18 |
| laas.hal.science | 18 |
| pse.hal.science | 18 |
| u-bourgogne.hal.science | 18 |
| unc.hal.science | 18 |
| unilim.hal.science | 18 |
| univ-evry.hal.science | 18 |
| univ-montpellier3-paul-valery.hal.science | 18 |
| univ-poitiers.hal.science | 18 |
| univ-sorbonne-nouvelle.hal.science | 18 |
| bnf.hal.science | 17 |
| brgm.hal.science | 17 |
| ensta.hal.science | 17 |
| imt-atlantique.hal.science | 17 |
| imt-mines-ales.hal.science | 17 |
| insa-toulouse.hal.science | 17 |
| institut-agro-dijon.hal.science | 17 |
| ird.hal.science | 17 |
| normandie-univ.hal.science | 17 |
| telecom-paris.hal.science | 17 |
| u-picardie.hal.science | 17 |
| ube.hal.science | 17 |
| univ-angers.hal.science | 17 |
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Recent changes
- dropped Cloudflare Bot Management Nov 2025