textbook.rintro.ru
Registered
Page analyze update date:
2026/03/31 16:19:01
Last whois update date:
2026/06/08 15:21:06
Domain Status
Registered
Paid till
08.11.2026
Available from
09.12.2026
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textbook.rintro.ru Website screenshot
SEO Score
58.22%
85
Score achieved
146
Maximum score
Main Information
Title: Intro | Введение в язык программирования R
Description: Short introduction into R programming language
Keywords: empty
Page Encoding:
utf-8
Page Filesize: 28 KB
Server Information
IP: 35.185.44.232
Location: United States,US,North Charleston,29415,32.8608,-79.9746,America/New_York
Encoding: utf-8
Meta Tags List
- equiv: Content-Type content: text/html; charset=UTF-8
- charset: utf-8
- name: viewport content: width=device-width, initial-scale=1, shrink-to-fit=no
- name: author content: Ph. A. Upravitelev
- name: description content: Short introduction into R programming language
- name: generator content: bookdown 0.22.17 with bs4_book()
- property: og:title content: Intro | Введение в язык программирования R
- property: og:type content: book
- property: og:description content: Short introduction into R programming language
- name: twitter:card content: summary
- name: twitter:title content: Intro | Введение в язык программирования R
- name: twitter:description content: Short introduction into R programming language
- name: viewport content: width=device-width, initial-scale=1, shrink-to-fit=no
Internal Links
External Links
Whois Information
domain_name: rintro.ru
update_date: on
update_time:
creation_date: 2021-11-08T20:25:03Z
creation_time: 1636403103
expiration_date: 2026-11-08T20:25:03Z
Whois Raw Data
domain: RINTRO.RU
nserver: ns1.timeweb.ru.
nserver: ns2.timeweb.ru.
nserver: ns3.timeweb.org.
nserver: ns4.timeweb.org.
state: REGISTERED, DELEGATED, UNVERIFIED
person: Private Person
registrar: TIMEWEB-RU
admin-contact: http://timeweb.name/contact-admin
created: 2021-11-08T20:25:03Z
paid-till: 2026-11-08T20:25:03Z
free-date: 2026-12-09
source: TCI
Last updated on 2026-06-08T15:18:01Z
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
✓
Character Encoding
Page: utf-8, Header: utf-8
Character encoding consistent between HTML and headers.
✓
Page Size
28748 bytes
Page size acceptable for fast loading.
✓
Resources
24 total
Moderate number of resources. Consider combining files.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
!
Robots.txt
Missing
Add robots.txt file to control search engine crawling.
!
Sitemap
Not found
Add sitemap.xml and reference it in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
!
Compression
Not detected
Enable gzip or zstd compression to reduce file sizes.
✓
Caching
max-age=600
Cache-control headers properly set.
✓
Page Speed
1.85 ms
Excellent loading speed.
On-Page SEO
✓
Title
Intro | Введение в язык программирования R
Good title length (30-60 characters).
!
Meta Description
Short introduction into R programming language Lenght:46
Meta description too short. Expand to 100-160 characters.
!
H1 Heading
2 found - "Введение в язык программирования R"
Use only one H1 heading per page. Remove extra H1 tags.
✓
Word Count
517
Good content length (500-2000 words recommended).
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
!
Duplicate Meta
{"viewport":2}
Remove duplicate meta tags to avoid conflicts.
✓
Keywords
empty
Meta keywords set (note: not used by major search engines).
Content and UX
✓
Language
ru-ru
Language attribute properly set.
✓
Images
0 total, 0 missing ALT
All images have proper ALT text.
✓
Viewport
width=device-width, initial-scale=1, shrink-to-fit=no
Viewport meta tag properly set for mobile devices.
!
Open Graph
Missing: og:image, og:url
Add missing OpenGraph tags for social media sharing: og:image, og:url
!
Structured Data
0 JSON-LD scripts
Add structured data (JSON-LD) for rich snippets and better SEO.
Positions in Google
Search Phrases - Google
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 2 | /io.html | ||
| 3(+1) | / | ||
| 4 | /syntax.html | ||
| 5 | /installation.html | ||
| 5 | /syntax.html | ||
| 6 | /installation.html | ||
| 6 | / | ||
| 7 | /syntax.html | ||
| 7 | /objects.html | ||
| 8 | /objects.html |
Positions in Yandex
Search Phrases - Yandex
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 7 | / | ||
| 7 | /installation.html |