isu.ru

https://isu.ru· First analyzed 03 May 2026· Updated 03 May 2026

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isu.ru

Mobile

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Hosting Provider

Irkutsk State University

IP Address

194.190.238.182

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Irkutsk, Russia

ASN

AS3267

Organization

Irkutsk State University

Server

Nginx

Nameservers

ns.baikal.ru.news.isu.ru.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.0 s10%

Speed Index

1.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

15.6 MB

174 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Irkutsk State University

Technology Stack

7 Technologies Detected

Libraries

CSS Frameworks

Frameworks

Web Servers

SEO Analysis

D58/100

Meta Tags7/15

Content11/12

Headings5/8

Technical17/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

isu.ruisu.ru

Иркутский государственный университет

No description available for this page.

Title Length37 chars

Recommended: 50-60 chars (~229px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (1)

• Missing meta description — important for click-through rates in SERPs

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

robots.txt

100 rules

Sitemap reference found

Local SEO

Local Search Readiness

8/100

Poor

3 12 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

F36/100

Bot Access

20/25

Machine Read.

8/25

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.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:6%

Words:1,992

Token eff.:Optimal

Sections/1K:1

Structured Data

No Schema

Citation Readiness

Opening Summary560w

Descriptive Headingsavg 2.5w

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.

59/100

Passed

Critical

Warnings

Images & Alt Text

8/20

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

Semantic Structure

13/20

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

Forms & Inputs

15/15

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

7/15

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.

18/100

1.98 g

CO₂e / view

15.6 MB

Page Weight

Cleaner Than

New Visitor

2.26 g

Returning (cached)

1.13 g

Annual (10K/mo)

237.8 kg

Emission Segments

Data Center

443 mg

Network

476 mg

Device

1.06 g

Resource Breakdown

JavaScript

1.0 MB

Images

13.5 MB

CSS

1.2 MB

HTML

26.0 KB

Green Hosting Not Verified

Irkutsk State University

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

19d

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/2

Valid From

21.02.2026

Valid Until

22.05.2026

Subject Alternative Names (6)

conf.psy.isu.rufiles.isu.ruisu.rumodern-psy22.isu.runew.isu.ruwww.isu.ru

SHA-256 Fingerprint

88:12:CF:3C:5D:8C:DD:E8:7B:3B:F6:C2:DF:90:82:C0:50:AF:FD:8F...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(public, max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html;charset=UTF-8

date

Sun, 03 May 2026 14:19:41 GMT

last-modified

Sun, 03 May 2026 19:19:41 PKT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

gate.isu.ru

gate.baikal.ru

Domain Information

isu.ru

Domain Age

29y 1m

Created

08.04.1997

Expires

30.04.2027

Registrar

R01-RU

DNSSEC

Not Enabled

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.

56/100

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=1.0, maximum-scale=1.0

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

GolosTextWebVF + Open Sans Semibold

WCAG Partial

60/100

Readability

/30

24/30

21px · LH 1.42

Hierarchy

/20

9/20

1.89x ratio

WCAG

/25

12/25

1.78:1 min contrast

Performance

/25

15/25

2 fonts · 5 req

Heading Font

GolosTextWebVF

Sans40px

Body Font

Open Sans Semibold

Sans21px

Contrast Ratio

1.78:1

2 issues

Reading Comfort

~39 CPL

Narrow lines

40px

21px

✅ Excellent readability: 21px 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 1.8:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsVariable Fonts

Color Palette

10 unique colors

Light

#ffffff

Background· 24.8%

#1e46dc

Accent· 27.3%

#035db1

Primary· 10.4%

#0f1d54

Accent· 7.6%

#b09e91

Secondary· 7.6%

#c8cfd8

Secondary· 7.5%

#7b92b1

Secondary· 4.5%

#2d3771

Secondary· 4.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

27 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(11)top-fwz1.mail.ru(2)mc.yandex.ru(1)vk.com(1)01.srvc.isu.ru(1)

Website Identity

isu.ru

office@admin.isu.ru

29 years old

Location detected: 🇷🇺 Russiavia tld

R01-RUru

Social Profiles

YouTube Telegram

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Last analyzed: 03 May 2026 at 14:20

Historical Analysis & Change Tracking