semestr.online
Registered
Page analyze update date:
2026/03/28 19:30:33
Last whois update date:
2026/05/28 00:05:29
Domain Status
Registered
Paid till
29.05.2026
Available from
28.06.2026
×
![Fullscreen website screenshot]()
semestr.online Website screenshot
SEO Score
54.79%
80
Score achieved
146
Maximum score
Main Information
Title: Онлайн калькуляторы для учебы и бизнеса
Description: dee62d29cf0a12ae
Keywords: Онлайн калькуляторы по математике, информатике, экономике и другим дисциплинам помогают в их изучении, поскольку все решения подробно оформляются по шагам. Скачать отчет можно в формате Word и Excel. Сервис может быть полезен школьникам, студентам, преподавателям и предпринимателям
Page Encoding:
unknown
Body and server charset are different!
Page Filesize: 47 KB
Server Information
IP: 81.177.33.229
Location: Russia,RU,,,55.7386,37.6068,Europe/Moscow
Encoding: utf-8
Whois Information
domain_name: semestr.online
update_date: 2026-03-17T21:00:48.931Z
update_time: 1773781248
creation_date: 2018-05-29T03:49:18.000Z
creation_time: 1527565758
expiration_date: 2026-05-29T23:59:59.000Z
Whois Raw Data
Domain Name: SEMESTR.ONLINE
Registrar: Regional Network Information Center, JSC dba RU-CENTER
Domain Status: client transfer prohibited
Creation Date: 2018-05-29T03:49:18.000Z
Registry Expiry Date: 2026-05-29T23:59:59.000Z
Updated Date: 2026-03-17T21:00:48.931Z
Name Server: NS1.1GB.RU
Name Server: NS2.1GB.RU
Name Server: NS3.1GB-RU.COM
REGISTRAR Contact: Regional Network Information Center, JSC dba RU-CENTER
>>> Last update of RDAP database: 2026-05-28T00:05:29Z
Robots.txt
User-agent: * Sitemap: https://www.semestr.online/sitemap.xml
SEO Audit
Technical SEO
✓
Response Code
HTTP/2 200
Status 200 OK - page loads correctly.
!
Character Encoding
Page: , Header: utf-8
Character encoding mismatch between HTML and HTTP headers.
✓
Page Size
49132 bytes
Page size acceptable for fast loading.
✓
Resources
0 total
Optimal number of resources.
✓
Hreflang Tags
hreflang tags
Add hreflang tags if you have multilingual content.
✓
Robots.txt
Exists
Robots.txt file found.
✓
Sitemap
Declared in robots.txt
Sitemap declared in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
✓
Compression
gzip
Gzip or Zstd compression enabled for faster loading.
!
Caching
Not set
Add cache-control headers to improve loading speed for returning visitors.
✓
Page Speed
1.08 ms
Excellent loading speed.
On-Page SEO
✓
Title
Онлайн калькуляторы для учебы и бизнеса
Good title length (30-60 characters).
!
Meta Description
dee62d29cf0a12ae Lenght:16
Meta description too short. Expand to 100-160 characters.
!
H1 Heading
0 found - ""
Add exactly one H1 heading with primary keywords.
!
Word Count
Content very short. Aim for at least 500 words for better SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
Онлайн калькуляторы по математике, информатике, экономике и другим дисциплинам помогают в их изучении, поскольку все решения подробно оформляются по шагам. Скачать отчет можно в формате Word и Excel. Сервис может быть полезен школьникам, студентам, преподавателям и предпринимателям
Meta keywords set (note: not used by major search engines).
Content and UX
!
Language
Add lang attribute to tag for accessibility and SEO.
✓
Images
0 total, 0 missing ALT
All images have proper ALT text.
!
Viewport
Add viewport meta tag for mobile responsiveness.
!
Open Graph
Missing: og:title, og:description, og:image, og:url
Add missing OpenGraph tags for social media sharing: og:title, og:description, og:image, og:url
!
Structured Data
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 | /graph/venn.php | ||
| 2 | /graph/graph.php | ||
| 3 | /web/word.php | ||
| 3 | /informatics/ | ||
| 4 | /economy/business-pl... | ||
| 6 | /informatics/ | ||
| 7 | /graph/graph.php | ||
| 8 | /graph/network.php | ||
| 10 | /web/word.php | ||
| 10 | /web/ocr.php |
Positions in Yandex
Search Phrases - Yandex
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 1(+7) | /web/word.php | ||
| 1 | /web/word.php | ||
| 1 | /graph/venn.php | ||
| 5 | /graph/venn.php | ||
| 9 | /graph/venn.php | ||
| 12 | /graph/venn.php | ||
| 14 | /graph/venn.php |