sfu-kras.ru

https://sfu-kras.ru· First analyzed 27 Apr 2026· Updated 27 Apr 2026

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sfu-kras.ru

Mobile

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Hosting Provider

Siberian Federal University

IP Address

193.218.139.99

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Krasnoyarsk, Russia

ASN

AS42048

Organization

Siberian Federal University

Server

Tengine

Nameservers

ns2.sfu-kras.ru.ns.sfu-kras.ru.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.2 s10%

Speed Index

1.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.6 MB

136 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

Styling

Tailwind CSS

Infrastructure

Hosting

Siberian Federal University

CDN

Vercel Image

Progressive Web App

Web Manifest

Technology Stack

3 Technologies Detected

Meta Frameworks

Next.js

CSS Frameworks

Tailwind CSS

Web Servers

Tengine

SEO Analysis

D58/100

Meta Tags7/15

Content10/12

Headings6/8

Technical15/25

E-E-A-T0/7

Images3/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

sfu-kras.rusfu-kras.ru

Сибирский федеральный университет

No description available for this page.

Title Length33 chars

Recommended: 50-60 chars (~204px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (28/33) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

2 rules

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

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

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AI & LLM Readiness

D46/100

Bot Access

20/25

Machine Read.

18/25

Schema Data

0/25

Citation

8/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

blockquotes

Text ratio:1%

Words:1,121

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary14w

Descriptive Headingsavg 10.3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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

14/20

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

Forms & Inputs

2/15

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

9/15

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

ARIA & Roles

4/15

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.

22/100

588 mg

CO₂e / view

4.6 MB

Page Weight

15%

Cleaner Than

New Visitor

672 mg

Returning (cached)

336 mg

Annual (10K/mo)

70.5 kg

Emission Segments

Data Center

131 mg

Network

141 mg

Device

316 mg

Resource Breakdown

JavaScript

907.1 KB

Images

3.2 MB

CSS

46.7 KB

Fonts

45.9 KB

HTML

421.6 KB

Other

7.4 KB

Green Hosting Not Verified

Siberian Federal University

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

239d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

21.11.2025

Valid Until

23.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.sfu.rusfu.ru

SHA-256 Fingerprint

D8:A8:92:E4:88:EB:B9:EB:EE:8A:E9:BE:5D:FA:34:5B:A7:BA:4B:9E...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Tue, 28 Apr 2026 06:14:33 GMT

link

</_next/static/media/6e50af2f4c313e23-s.p.woff2>; rel=preloa...

server

Tengine

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (2)

mx1.sfu-kras.ru

mx2.sfu-kras.ru

Domain Information

sfu-kras.ru

Domain Age

19y 4m

Created

05.12.2006

Expires

05.12.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

79/100

Mobile Friendly1 breakpoint

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

Typography & Readability

__Onest_796408

WCAG Partial

77/100

Readability

/30

22/30

16px · LH 1.42

Hierarchy

/20

15/20

2.5x ratio

WCAG

/25

18/25

2.94:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

__Onest_796408

Sans40px

Body Font

__Onest_796408

Sans16px

Contrast Ratio

2.94:1

2 issues

Reading Comfort

~39 CPL

Narrow lines

40px

32px

18px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

✅ Optimal line spacing: 1.42 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 2 elements below WCAG AA threshold (min 2.9:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFonts

Color Palette

9 unique colors

Dark

#515954

Other· 5.8%

#fcfdff

Background· 27.200000000000003%

#1d345d

Primary· 20.4%

#b0b3bf

Secondary· 17%

#e1d6cd

Secondary· 10.1%

#e6600e

Accent· 7.2%

#2f291a

Secondary· 5.4%

#0e181f

Primary· 4.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(9)top-fwz1.mail.ru(2)vk.com(2)mc.yandex.ru(1)connect.ok.ru(1)

Website Identity

sfu-kras.ru

19 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RUru

Social Profiles

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Last analyzed: 27 Apr 2026 at 23:19

Historical Analysis & Change Tracking