ihst.ru

https://ihst.ru· First analyzed 22 May 2026· Updated 22 May 2026

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ihst.ru

Mobile

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Hosting Provider

Internet-Pro LLC

IP Address

91.201.52.216

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Yekaterinburg, Russia

ASN

AS44128

Organization

Internet-Pro LLC

Server

Nginx

Nameservers

ns4.netangels.ru.ns1.netangels.ru.ns2.netangels.ru.ns3.netangels.ru.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.8 MB

58 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Bootstrap

CMS

WordPressv6.8.5

Infrastructure

Hosting

Internet-Pro LLC

Technology Stack

11 Technologies Detected

CSS Frameworks

Bootstrap

Tailwind CSS

Plugins

Wd Google Maps Foobox Image Lightbox

Libraries

UI Components

Icon Libraries

Fonts

Web Servers

Languages

Customer Support

SEO Analysis

D46/100

Meta Tags4/15

Content6/12

Headings3/8

Technical15/25

E-E-A-T0/7

Images2/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

ihst.ruihst.ru

IHST RAS – S.I.Vavilov Institute for the History of Science and Tec...

No description available for this page.

Title truncated.

Title Length109 chars

Recommended: 50-60 chars (~650px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (4)

• Title is too long (109 chars, ~650px). 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

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

10 URLs

10 sub-sitemaps

robots.txt

27 rules

Local SEO

Local Search Readiness

14/100

Poor

4 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

F25/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

3/25

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

nav

Text ratio:1%

Words:118

Token eff.:Too Short

Sections/1K:33.9

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.8w

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.

66/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

11/20

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

4/15

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

4 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.

24/100

350 mg

CO₂e / view

2.8 MB

Page Weight

30%

Cleaner Than

New Visitor

400 mg

Returning (cached)

200 mg

Annual (10K/mo)

42.0 kg

Emission Segments

Data Center

78 mg

Network

84 mg

Device

188 mg

Resource Breakdown

JavaScript

525.6 KB

Images

2.1 MB

CSS

139.0 KB

HTML

19.4 KB

Green Hosting Not Verified

Internet-Pro LLC

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

20d

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

14.03.2026

Valid Until

12.06.2026

Subject Alternative Names (4)

ihst.rumig.ihst.ruwww.ihst.ruwww.mig.ihst.ru

SHA-256 Fingerprint

B9:59:49:D2:DA:1F:01:12:8F:3A:DF:FE:FD:7E:CD:C1:AE:2F:14:37...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-security-policy

upgrade-insecure-requests;

content-type

text/html; charset=UTF-8

date

Fri, 22 May 2026 16:18:27 GMT

link

<https://ihst.ru/wp-json/>; rel="https://api.w.org/"

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mx1.ihst.ru

mx0.ihst.ru

Domain Information

ihst.ru

Domain Age

28y 6m

Created

01.11.1997

Expires

30.11.2026

Registrar

RU-CENTER-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.

67/100

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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans + Verdana

WCAG Partial

57/100

Readability

/30

21/30

26px · LH --

Hierarchy

/20

6/20

WCAG

/25

17/25

1:1 min contrast

Performance

/25

13/25

2 fonts · 2 req

Heading Font

Open Sans

Sans

Body Font

Verdana

Sans26px

Contrast Ratio

1:1

1 issue

Reading Comfort

~43 CPL

Narrow lines

30px

24px

26px

✅ Excellent readability: 26px body text is ideal for all devices.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 1.0:1).

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

✅ Modern fluid typography: clamp() with rem units ensures zoom accessibility (WCAG 1.4.4).

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

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

GGoogle FontsFluid Type (rem)

Color Palette

10 unique colors

4:1 AA Large Light

#ffffff

Background· 72.60000000000001%

#7f7f81

Other· 3.4%

#060989

Primary· 5.4%

#2b657f

Secondary· 4.2%

#b2cad9

Secondary· 3.3%

#e8f3f9

Accent· 2.3%

#03033d

Accent· 1.6%

#202e56

Secondary· 1.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

29 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ihst.ru(14)maps.googleapis.com(3)mc.yandex.ru(1)top-fwz1.mail.ru(1)ajax.googleapis.com(1)

Website Identity

ihst.ru

28 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RUen-GB

Social Profiles

Instagram YouTube

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Last analyzed: 22 May 2026 at 16:19

Historical Analysis & Change Tracking