What powers perldoc.jp?
Last seen Apr 2026 · 6 technologies across 3 categories
Analytics
Cloudflare Browser Insights
since Feb 2026
Google Analytics
since Jun 2018
CDN
Cloudflare
since Jun 2018
Miscellaneous
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| perl substr | #25 | 1 |
| perl sprintf | #21 | 1 |
| perl split | #34 | 1 |
| bless perl | #54 | 0 |
| bless perl | #30 | 0 |
| carp in perl | #21 | 0 |
| chdir in perl | #76 | 0 |
| constants in perl | #19 | 0 |
| continue perl | #65 | 0 |
| cpanminus | #73 | 0 |
| cpanminus | #47 | 0 |
| cpanminus | #73 | 0 |
| cpanminus | #47 | 0 |
| system perl | #32 | 0 |
| system in perl | #38 | 0 |
| switch statement in perl | #42 | 0 |
| tea cipher | #71 | 0 |
| tea algorithm | #80 | 0 |
| test more perl | #23 | 0 |
| thread in perl | #61 | 0 |
| try/catch in perl | #48 | 0 |
| unpack perl | #77 | 0 |
| unlink in perl | #29 | 0 |
| undef perl | #26 | 0 |
| uc in perl | #39 | 0 |
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
- 100% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
5.31 / 10 · ranked #195,571 of all domains
97 referring domains · OpenPageRank
Search traffic
3 est. monthly organic visits (US)
196 keywords in Google's top 30
Core Web Vitals
| LCP | 0.7 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Subdomains
| Host | Techs |
|---|---|
| perldoc.jp | 6 |
| www.perldoc.jp | 3 |