What powers concretus.jp?

Last seen Aug 2026 · 19 technologies across 13 categories

Analytics

Facebook Pixel v2.9.373
since May 2024
Google Analytics
since Jan 2021
Matomo Analytics
since Sep 2023

Caching

WP Rocket
since Dec 2024

CMS

WordPress v7.0.4
since Jan 2021

Databases

MySQL
since Jan 2021

Font scripts

Twitter Emoji (Twemoji)
since Jan 2021

Hosting

Xserver
since Aug 2022

JavaScript libraries

core-js v3.32.2
since Aug 2021

Miscellaneous

Open Graph
since Sep 2022
RSS
since Aug 2026

Page builders

WordPress Site Editor
since Aug 2026

Performance

Priority Hints
since Nov 2023

Programming languages

PHP
since Jan 2021

Web servers

Nginx
since Jan 2021

WordPress plugins

All in One SEO v4.9.10
since Jul 2024
Elementor v4.1.5
since Dec 2024
PixelYourSite
since Jun 2025
Site Kit v1.183.0
since Nov 2021

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Aug 2026.

  • robots.txt found
  • llms.txt not found
  • ai.txt not found

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 69% desktop
  • 31% phone
  • Japan

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

2.15 / 10 · ranked #3,212,382 of all domains

6 referring domains · OpenPageRank

Core Web Vitals

LCP1.1 s
INP50 ms
CLS0
TTFB300 ms

Real user p75, Chrome UX Report, Aug 2026.

Page

  • Language: Japanese
  • Weight: 1.8 MB · 27 requests
  • WordPress theme: kamishiro · all themes
  • Structured data: JSON-LD, OpenGraph, Twitter Cards

Homepage as crawled by the HTTP Archive, Aug 2026.

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