krasu.ru

https://krasu.ru· First analyzed 13 May 2026· Updated 13 May 2026

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krasu.ru

Mobile

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Hosting Provider

Siberian Federal University

IP Address

193.218.137.11

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Krasnoyarsk, Russia

ASN

AS42048

Organization

Siberian Federal University

Server

Nginx

Nameservers

ns.krasu.ru.ns3.krasu.ru.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

393 ms10%

Speed Index

511 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

7 KB

8 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Siberian Federal University

Technology Stack

3 Technologies Detected

Analytics

Google Analytics

Web Servers

Nginxv1.10.3

Languages

PHPv5.2.6

SEO Analysis

F35/100

Meta Tags4/15

Content6/12

Headings3/8

Technical6/25

E-E-A-T0/7

Images4/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

krasu.rukrasu.ru

Кольцо красноярских краеведческих и научно-образовательных веб-ресу...

No description available for this page.

Title truncated.

Title Length82 chars

Recommended: 50-60 chars (~506px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Title is too long (82 chars, ~506px). Will be truncated in search results.
• Missing meta description — important for click-through rates in SERPs
• Missing H1 tag — every page should have exactly one H1

16 issues found

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Crawlability

Sitemap

robots.txt

2 rules

Local SEO

Local Search Readiness

2/100

Poor

1 14 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

F24/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

2/25

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:161

Token eff.:Too Short

Sections/1K:31.1

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 3.8w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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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.

56/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

4/20

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

Forms & Inputs

12/15

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

1/15

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

5 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.

56/100

A+

<0.001 g

CO₂e / view

7.2 KB

Page Weight

95%

Cleaner Than

New Visitor

1 mg

Returning (cached)

<0.001 g

Annual (10K/mo)

108 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

Images

3.0 KB

CSS

1.3 KB

HTML

2.9 KB

Green Hosting Not Verified

Siberian Federal University

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

25d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

10.03.2026

Valid Until

08.06.2026

Subject Alternative Names (20)

battle-museum.krasu.rubirds.krasu.rubytev.krasu.rucave.krasu.rudecembrists.krasu.rueco.krasu.ruergaki.krasu.ruevenkiya.krasu.ru+12 more

SHA-256 Fingerprint

C8:B3:D0:B7:48:C4:C2:96:2C:A9:3D:BE:36:DF:4D:61:5D:72:37:9E...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-length

2643

content-type

text/html; charset=UTF-8

date

Wed, 13 May 2026 19:21:09 GMT

server

nginx/1.10.3

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mail.krasu.ru

Domain Information

krasu.ru

Domain Age

27y 8m

Created

02.09.1998

Expires

30.09.2026

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.

24/100

Not Mobile Friendly

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.

5 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Tahoma

WCAG AA

65/100

Readability

/30

21/30

17px · LH --

Hierarchy

/20

8/20

WCAG

/25

22/25

5.74:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Tahoma

Sans

Body Font

Tahoma

Sans17px

Contrast Ratio

5.74:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

left aligned

18px

17px

✅ Excellent readability: 17px body text is ideal for all devices.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.7:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

6 unique colors

2.25:1 Fail Light

#ffffff

Background· 87.89999999999999%

#acadae

Other· 3.1%

#926566

Primary· 1.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

google-analytics.com(1)

Website Identity

krasu.ru

web@krasu.ru

27 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RU

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Last analyzed: 13 May 2026 at 19:21

Historical Analysis & Change Tracking