What powers nipr.ac.jp?

Last seen Jun 2026 · 40 technologies across 24 categories

Analytics

Google Analytics
since Jun 2018

Cache Tools

Varnish
since Jan 2019

CDN

cdnjs
since Apr 2024
Cloudflare
since Apr 2024
Google Hosted Libraries
since Feb 2022
jQuery CDN
since Sep 2025

CMS

WordPress
since Sep 2023

Comment systems

Livefyre v1.9.4
since Jul 2021

Databases

Firebase
since Dec 2023
MySQL
since Sep 2023

Editors

DreamWeaver
since Apr 2018

Font scripts

Google Font API
since May 2024

Hosting

Sakura Internet
since Aug 2022

JavaScript frameworks

Nuxt.js
since Jan 2019
Quasar
since Dec 2023
Vue.js
since Jan 2019

JavaScript libraries

core-js v3.36.0
since Sep 2021
jQuery v1.6.4
since Apr 2018
Slick
since Apr 2023
Swiper
since Sep 2025

Maps

Leaflet v1.9.4
since Jan 2019

Miscellaneous

Open Graph
since Apr 2023
PWA
since Aug 2022
RSS
since Sep 2023
Webpack
since Jan 2019

Operating systems

CentOS
since Apr 2020

Performance

Priority Hints
since Apr 2024

Programming languages

Node.js
since May 2020
PHP
since Apr 2020

Security

HSTS
since Sep 2022

Tag managers

Google Tag Manager
since Apr 2023

UI frameworks

Bootstrap
since Feb 2021
Tailwind CSS
since Apr 2022

Video players

VideoJS
since Dec 2023

Web server extensions

OpenSSL v1.0.2k
since Apr 2020

Web servers

Apache HTTP Server v2.4.6
since Apr 2020
Nginx
since Apr 2018

Webmail

Google Workspace
since Aug 2022

WordPress plugins

EWWW Image Optimizer
since Sep 2025
MetaSlider
since Sep 2023

Top search keywords

KeywordPositionEst. monthly visits
nerpa seal #45 31
icecore #17 12
polar museum #9 9
qaanaaq #41 5
japan antarctic research expedition #2 5
baikal seal skull #7 4
syowa station antarctica #3 3
siberian freshwater seal #5 3
nerpa seal teeth #4 3
times new roman font size 12 example #5 2
times new roman font size 12 example #5 2
us research stations in antarctica #73 2
arctic shipping routes #35 2
research stations in antarctica #42 2
salluit #78 2
salluit #30 2
antarctic research stations map #59 2
chikyu #77 1
svalbard station #82 1
syukuro manabe #41 1
tundra bacteria #15 1
arctic research station #71 1
arctic research facility #9 1
arctic challenge #25 1
arcs japan #7 1

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

  • 66% desktop
  • 34% phone
  • Japan

Countries where the site has Chrome traffic, strongest markets first.

Open Page Rank

7.16 / 10 · ranked #31,737 of all domains

555 referring domains · OpenPageRank

Search traffic

110 est. monthly organic visits (US)

157 keywords in Google's top 30

Core Web Vitals

LCP0.9 s
INP50 ms
CLS0
TTFB100 ms

Real user p75, Chrome UX Report, Jun 2026.

Page

  • Weight: 0.9 MB · 19 requests

Homepage as crawled by the HTTP Archive, Jul 2026.

Subdomains

HostTechs
www.arcs3.nipr.ac.jp 16
ads.nipr.ac.jp 13
kyoku.nipr.ac.jp 12
yamato.nipr.ac.jp 10
geo.nipr.ac.jp 9
polarsympo.nipr.ac.jp 9
www.nipr.ac.jp 9
polaris.nipr.ac.jp 6
science-museum-blog.nipr.ac.jp 4
nipr-blog.nipr.ac.jp 2

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