What powers sejuku.net?
Last seen Jun 2026 · 90 technologies across 34 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| numpy zeros | #52 | 11 |
| numpy log | #46 | 6 |
| java string int | #64 | 6 |
| for c# | #55 | 6 |
| getelementbyid | #77 | 5 |
| css important | #64 | 5 |
| numpy random normal | #34 | 4 |
| python find | #97 | 4 |
| js or | #82 | 4 |
| c programming static | #91 | 3 |
| c programming static | #89 | 3 |
| np zeros | #50 | 3 |
| js match | #82 | 3 |
| html style | #88 | 3 |
| display block | #73 | 3 |
| file class java | #75 | 3 |
| foreach jquery | #53 | 3 |
| while vba | #41 | 2 |
| while loop vba | #44 | 2 |
| c# stringbuilder | #48 | 2 |
| toupper java | #69 | 2 |
| transformation unity | #57 | 2 |
| unity3d raycast | #38 | 2 |
| unity transforms | #67 | 2 |
| unity quaternion | #36 | 2 |
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
- 81% desktop
- 19% phone
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.28 / 10 · ranked #90,373 of all domains
509 referring domains · OpenPageRank
Search traffic
340 est. monthly organic visits (US)
2,040 keywords in Google's top 30
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Japanese
- Weight: 5.8 MB · 270 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| lp.sejuku.net | 37 |
| go.sejuku.net | 36 |
| sejuku.net | 34 |
| www.sejuku.net | 33 |
| terakoya.sejuku.net | 32 |
| calendar.sejuku.net | 29 |
| generative-ai.sejuku.net | 26 |
| best.sejuku.net | 24 |
| career.sejuku.net | 23 |
| corp.sejuku.net | 17 |
| yoshina.sejuku.net | 16 |
| www.hack.sejuku.net | 11 |
| seminar.sejuku.net | 10 |
| lms.sejuku.net | 9 |
| school.sejuku.net | 8 |
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Recent changes
- detected TikTok Pixel Mar 2026
- dropped Contact Form 7 Nov 2025
- dropped reCAPTCHA Nov 2025
- detected Rubicon Project Oct 2025