xras.ru

https://xras.ru· First analyzed 19 May 2026· Updated 19 May 2026

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xras.ru

Mobile

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Hosting Provider

Space Research Institute of Russian Academy of Sciences

IP Address

62.61.18.93

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS3218

Organization

Space Research Institute of Russian Academy of Sciences

Server

Apache

Nameservers

ns1.beget.ru.ns2.beget.pro.ns1.beget.pro.ns2.beget.com.+2 more

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%

283 KB

22 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Space Research Institute of Russian Academy of Sciences

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Apachev2.4.62

SEO Analysis

D59/100

Meta Tags12/15

Content12/12

Headings3/8

Technical13/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

xras.ruxras.ru

Лаборатория солнечной астрономии ИКИ и ИСЗФ

Сайт лаборатории солнечной астрономии и гелиофизического приборостроения ИКИ РАН и ИСЗФ СО РАН

Title Length43 chars

Recommended: 50-60 chars (~266px / 580px)

Description Length94 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

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Crawlability

Sitemap

robots.txt

15 rules

Local SEO

Local Search Readiness

3/100

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

D40/100

Bot Access

20/25

Machine Read.

11/25

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:24%

Words:583

Token eff.:Optimal

Sections/1K:25.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary84w

Descriptive Headingsavg 2.7w

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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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.

72/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

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

9/15

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

ARIA & Roles

0/15

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.

60/100

A+

35 mg

CO₂e / view

283.4 KB

Page Weight

90%

Cleaner Than

New Visitor

40 mg

Returning (cached)

20 mg

Annual (10K/mo)

4.2 kg

Emission Segments

Data Center

8 mg

Network

8 mg

Device

19 mg

Resource Breakdown

JavaScript

87.8 KB

Images

21.4 KB

CSS

129.3 KB

Fonts

28.4 KB

HTML

7.9 KB

Other

8.6 KB

Green Hosting Not Verified

Space Research Institute of Russian Academy of Sciences

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

54d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

13.04.2026

Valid Until

12.07.2026

Subject Alternative Names (2)

www.xras.ruxras.ru

SHA-256 Fingerprint

E8:BB:21:59:72:FA:3F:98:4D:89:5C:8E:CB:AD:A8:7A:68:76:EB:E7...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

content-length

7759

content-type

text/html; charset=UTF-8

date

Tue, 19 May 2026 01:41:53 GMT

keep-alive

timeout=5, max=2000

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx1.beget.com

mx2.beget.com

Domain Information

xras.ru

Domain Age

10y 2m

Created

26.02.2016

Expires

26.02.2027

Registrar

BEGET-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.

58/100

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.

Viewport

width=device-width, initial-scale=1.0

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

DinCondensed + Arial

WCAG Partial

62/100

Readability

/30

21/30

12px · LH 1.50

Hierarchy

/20

5/20

WCAG

/25

16/25

1:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

DinCondensed

Sans

Body Font

Arial

Sans12px

Contrast Ratio

1:1

20 issues

Reading Comfort

~45 CPL

Optimal (45–75)

18px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ Optimal line length: ~45 chars/line (ideal 45–75 CPL).

⚠️ Partial contrast: 20 elements below WCAG AA threshold (min 1.0:1).

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

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

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Color Palette

10 unique colors

Dark

#000000

Background· 36.5%

#010425

Primary· 13.7%

#0b5dae

Accent· 8.6%

#03347c

Accent· 7.4%

#021a4b

Accent· 7.1%

#468fbe

Secondary· 6.4%

#8fd9ee

Accent· 5.5%

#4f6173

Secondary· 4.8%

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Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

mc.yandex.ru(1)local(1)

Website Identity

xras.ru

10 years old

Location detected: 🇷🇺 Russiavia tld

BEGET-RUru

Social Profiles

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Last analyzed: 19 May 2026 at 01:42

Historical Analysis & Change Tracking