sakharov-center.ru

https://sakharov-center.ru· First analyzed 07 May 2026· Updated 07 May 2026

Export

sakharov-center.ru

Mobile

Sponsored

Hosting Provider

UltaHost Inc

IP Address

79.133.57.42

Site Location

🇷🇺 Russiavia tld

Server Location

🇩🇪 Frankfurt am Main, Germany

ASN

AS214036

Organization

UltaHost Inc

Server

Nginx

Nameservers

ns4.ultahost.com.ns3.ultahost.com.ns2.ultahost.com.ns1.ultahost.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

577 ms10%

Speed Index

750 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

720 KB

71 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Drupal

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

7 Technologies Detected

CSS Frameworks

Libraries

Other

Icon Libraries

Fonts

Web Servers

SEO Analysis

D55/100

Meta Tags7/15

Content11/12

Headings3/8

Technical14/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile1/4

Indexability3/3

sakharov-center.rusakharov-center.ru

Сахаровский центр

Миссия Сахаровского центра – сохранение и развитие наследия А.Д.Сахарова. Формирование исторической памяти о советском тоталитаризме и сопротивлении несвобод...

Description truncated.

Title Length17 chars

Recommended: 50-60 chars (~105px / 580px)

Description Length218 chars

Recommended: 120-160 chars

Issues (1)

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

12 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

43 rules

Local SEO

Local Search Readiness

0/100

Poor

15 2

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

Sponsored

AI & LLM Readiness

F39/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

9/25

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

navheader/footer

Text ratio:9%

Words:637

Token eff.:Optimal

Sections/1K:6.3

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary17w

Descriptive Headingsavg 2w

Canonical URL

Open Graph2/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

Upgrade to view recommendations

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.

63/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

10/20

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

7/15

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

4 recommendations

•Accessibility recommendation preview...

Upgrade to view recommendations

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.

45/100

89 mg

CO₂e / view

720.2 KB

Page Weight

80%

Cleaner Than

New Visitor

102 mg

Returning (cached)

51 mg

Annual (10K/mo)

10.7 kg

Emission Segments

Data Center

20 mg

Network

21 mg

Device

48 mg

Resource Breakdown

JavaScript

85.0 KB

Images

12.0 KB

CSS

608.9 KB

Fonts

2.8 KB

HTML

11.5 KB

Green Hosting Not Verified

UltaHost Inc

3 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

41%Poor

Interactive

HTTPS

No WAF

51d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

30.03.2026

Valid Until

28.06.2026

Subject Alternative Names (2)

sakharov-center.ruwww.sakharov-center.ru

SHA-256 Fingerprint

71:25:6D:8C:AA:90:24:52:30:1B:FE:CB:27:06:56:BC:25:E7:F3:85...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(must-revalidate, no-cache, private)

content-encoding

📦 Gzip(gzip)

content-language

content-length

11505

content-type

text/html; charset=UTF-8

date

Thu, 07 May 2026 23:12:55 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mail.sakharov-center.ru

sakharov-center.ru

Domain Information

sakharov-center.ru

Domain Age

26y 6m

Created

21.10.1999

Expires

31.10.2026

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

66/100

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, minimum-scale=1.0, maximum-scale=1.0, user-scalable=0

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Roboto

WCAG Partial

54/100

Readability

/30

14/30

14px · LH 1.21

Hierarchy

/20

10/20

WCAG

/25

17/25

1.66:1 min contrast

Performance

/25

13/25

1 font · 2 req

Heading Font

Roboto

Sans

Body Font

Roboto

Sans14px

Contrast Ratio

1.66:1

4 issues

Reading Comfort

~40 CPL

Narrow lines

24px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.21). Increase to 1.4–1.6 for better readability.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 1.7:1).

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

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

GGoogle Fonts

Color Palette

7 unique colors

14.94:1 AAA Light

#ffffff

Primary· 54.6%

#272727

Other· 1.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(19)cdnjs.cloudflare.com(1)

Website Identity