n-t.ru

https://n-t.ru· First analyzed 10 May 2026· Updated 10 May 2026

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n-t.ru

Mobile

Sponsored

Hosting Provider

HostiMan.ru

IP Address

81.90.182.128

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Marfino, Russia

ASN

AS50340

Organization

HostiMan.ru

Server

Nginx

Nameservers

ns1.r01.ru.ns2.r01.ru.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

576 ms10%

Speed Index

749 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

64 KB

12 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

HostiMan.ru

Technology Stack

6 Technologies Detected

Analytics

CSS Frameworks

Web Servers

Languages

SEO Analysis

C63/100

Meta Tags12/15

Content11/12

Headings3/8

Technical17/25

E-E-A-T0/7

Images4/7

Links4/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

n-t.run-t.ru

Наука и техника - электронная библиотека

Книги, cтатьи, журналы, новости науки и техники, биографии, информация для авторов

Title Length40 chars

Recommended: 50-60 chars (~248px / 580px)

Description Length83 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

10 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

3,799 URLs

robots.txt

5 rules

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

D41/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

13/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:14%

Words:517

Token eff.:Optimal

Sections/1K:15.5

Structured Data

No Schema

Citation Readiness

Opening Summary43w

Descriptive Headingsavg 1.9w

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

64/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

7/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

3 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

53/100

A+

8 mg

CO₂e / view

64.3 KB

Page Weight

95%

Cleaner Than

New Visitor

9 mg

Returning (cached)

5 mg

Annual (10K/mo)

948 g

Emission Segments

Data Center

2 mg

Network

2 mg

Device

4 mg

Resource Breakdown

JavaScript

49.4 KB

Images

4.6 KB

CSS

2.9 KB

HTML

7.4 KB

Green Hosting Not Verified

HostiMan.ru

5 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

76%Good

Static / Informational

HTTPS

No WAF

41d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

22.03.2026

Valid Until

20.06.2026

Subject Alternative Names (1)

n-t.ru

SHA-256 Fingerprint

14:49:40:72:1E:21:4F:F7:F4:A5:B9:2A:ED:15:37:CC:EF:7B:B1:D9...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sun, 10 May 2026 06:00:59 GMT

server

nginx/1.20.1

strict-transport-security

max-age=31536000;

x-powered-by

PHP/7.2.24

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

n-t.ru

Domain Age

26y 5m

Created

15.12.1999

Expires

31.12.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

64/100

Mobile Friendly5 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Arial + Verdana

WCAG AA

58/100

Readability

/30

14/30

12px · LH 1.32

Hierarchy

/20

7/20

WCAG

/25

21/25

6.79:1 min contrast

Performance

/25

16/25

System fonts

Heading Font

Arial

Sans

Body Font

Verdana

Sans12px

Contrast Ratio

6.79:1

WCAG AA (≥4.5:1)

Reading Comfort

~58 CPL

Optimal (45–75)

21px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.32). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~58 chars/line (ideal 45–75 CPL).

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 6.8:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

4 unique colors

Light

#f8fdf7

Primary· 88.89999999999999%

#95a8c3

Secondary· 4.7%

#c1d0d9

Secondary· 3.7%

#e5eeef

Secondary· 2.7%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

connect.facebook.net(2)site.yandex.net(2)googletagmanager.com(1)

Website Identity

n-t.ru

26 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RUru

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Last analyzed: 10 May 2026 at 06:01

Historical Analysis & Change Tracking