linuxcenter.ru

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

Export

linuxcenter.ru

Mobile

Sponsored

Hosting Provider

TimeWeb Co. LTD

IP Address

188.225.11.158

Site Location

🇷🇺 Russiavia phone

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS9123

Server

Apache

Nameservers

ns1.nameself.com.ns2.nameself.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

882 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

976 KB

57 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

TimeWeb Co. LTD

Technology Stack

7 Technologies Detected

CSS Frameworks

UI Components

Icon Libraries

Fonts

Web Servers

SEO Analysis

C60/100

Meta Tags14/15

Content12/12

Headings3/8

Technical12/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

linuxcenter.rulinuxcenter.ru

LinuxCenter - интернет-портал об СПО и электронике

Добро пожаловать в интернет-портал LinuxCenter! Новости о Linux, архив LinuxFormat, статьи и руководства

Title Length50 chars

Recommended: 50-60 chars (~307px / 580px)

Description Length104 chars

Recommended: 120-160 chars

Issues (1)

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

10 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

13/100

Poor

4 12 2

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

Sponsored

AI & LLM Readiness

D43/100

Bot Access

20/25

Machine Read.

13/25

Schema Data

0/25

Citation

10/25

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:7%

Words:529

Token eff.:Optimal

Sections/1K:24.6

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary20w

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 (8)

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.

76/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

20/20

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

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.

39/100

121 mg

CO₂e / view

975.5 KB

Page Weight

70%

Cleaner Than

New Visitor

138 mg

Returning (cached)

69 mg

Annual (10K/mo)

14.5 kg

Emission Segments

Data Center

27 mg

Network

29 mg

Device

65 mg

Resource Breakdown

JavaScript

91.3 KB

Images

754.6 KB

CSS

115.8 KB

Fonts

2.0 KB

HTML

11.8 KB

Green Hosting Not Verified

TimeWeb Co. LTD

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

76d

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/1.1

Valid From

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (2)

linuxcenter.ruwww.linuxcenter.ru

SHA-256 Fingerprint

B5:37:26:5B:3F:BE:D8:FB:91:DF:97:73:68:29:41:06:7B:71:0A:AE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-headers

access-control-allow-methods

access-control-allow-origin

cache-control

🔴 No Cache(no-cache, private)

connection

Keep-Alive

content-encoding

📦 Gzip(gzip)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

emx.mail.ru

Domain Information

linuxcenter.ru

Domain Age

26y 2m

Created

09.03.2000

Expires

31.03.2027

Registrar

REGTIME-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.

52/100

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

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Montserrat + PT serif

WCAG Partial

73/100

Readability

/30

21/30

16px · LH 1.50

Hierarchy

/20

15/20

2x ratio · ✓ H1→H6

WCAG

/25

17/25

1.07:1 min contrast

Performance

/25

20/25

2 fonts · 3 req

Heading Font

Montserrat

Sans32px

Body Font

PT serif

Serif16px

Contrast Ratio

1.07:1

9 issues

Reading Comfort

~32 CPL

Narrow lines

32px

46px

18px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.1:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

GGoogle FontsFlesch 49

Color Palette

6 unique colors

Light

#f8f8f8

Background· 33.599999999999994%

#faa612

Primary· 42.8%

#372f22

Secondary· 11.8%

#c39130

Accent· 6.5%

#e0c896

Accent· 3.8%

#f8b12c

Accent· 1.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

11 Resources

Scripts

Styles

Async

Defer

Top Script Sources

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

Website Identity

linuxcenter.ru

[email protected]

+78123090686

26 years old

Location detected: 🇷🇺 Russiavia phone

REGTIME-RUru

Social Profiles

YouTube

Sponsored

Last analyzed: 19 May 2026 at 02:02

Historical Analysis & Change Tracking