libfl.ru

https://libfl.ru· First analyzed 09 May 2026· Updated 09 May 2026

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libfl.ru

Mobile

Sponsored

Hosting Provider

Main Center of Information and Computing Ministry of culture of Russian Federation

IP Address

194.190.9.163

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS52184

Organization

Main Center of Information and Computing Ministry of culture of Russian Federation

Server

Nginx

Nameservers

automon.libfl.ru.ns8-l2.nic.ru.ns4-cloud.nic.ru.ns3-l2.nic.ru.+2 more

Performance

Core Web Vitals

Weight

First Contentful Paint

855 ms10%

Speed Index

1.1 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

4.2 MB

139 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Readymag

Technology Stack

9 Technologies Detected

Libraries

CSS Frameworks

UI Components

Analytics

Web Servers

Frameworks

SEO Analysis

D59/100

Meta Tags13/15

Content11/12

Headings1/8

Technical13/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile1/4

Indexability3/3

libfl.rulibfl.ru

Библиотека иностранной литературы им. М.И. Рудомино

Всероссийская Государственная Библиотека Иностранной Литературы имени Маргариты Ивановны Рудомино

Title Length51 chars

Recommended: 50-60 chars (~309px / 580px)

Description Length97 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (79/82) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

7 rules

Local SEO

Local Search Readiness

10/100

Poor

3 13 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:8%

Words:786

Token eff.:Optimal

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary265w

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

52/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

5/15

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.

5 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.

15/100

533 mg

CO₂e / view

4.2 MB

Page Weight

15%

Cleaner Than

New Visitor

609 mg

Returning (cached)

304 mg

Annual (10K/mo)

63.9 kg

Emission Segments

Data Center

119 mg

Network

128 mg

Device

286 mg

Resource Breakdown

JavaScript

1.3 MB

Images

1.8 MB

CSS

1.1 MB

HTML

13.4 KB

Other

1.6 KB

Green Hosting Not Verified

Main Center of Information and Computing Ministry of culture of Russian Federation

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

51d

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

31.03.2026

Valid Until

29.06.2026

Subject Alternative Names (2)

*.libfl.rulibfl.ru

SHA-256 Fingerprint

17:2B:58:44:DE:51:23:46:05:74:E9:6D:0D:BA:33:AC:1E:87:92:D5...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sat, 09 May 2026 05:15:55 GMT

etag

W/"e016-zYwst++BKIdlS5u4fGoLtVdx818"

server

nginx/1.18.0 (Ubuntu)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

emx.mail.ru

Domain Information

libfl.ru

Domain Age

28y 2m

Created

03.03.1998

Expires

31.03.2027

Registrar

RU-CENTER-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Notice (WP)

Cookie Consent Banner

Cookie Notice (WP)

GDPR Indicators

Cookie consent banner detected

CMP: Cookie Notice (WP)

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.

55/100

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=1278

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Open Sans + Arial

WCAG Partial

61/100

Readability

/30

22/30

16px · LH 1.69

Hierarchy

/20

8/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

17/25

System fonts

Heading Font

Open Sans

Body Font

Arial

Sans16px

Contrast Ratio

1:1

5 issues

Reading Comfort

~36 CPL

Narrow lines

16px

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

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 1.0:1).

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

✅ System fonts: Zero font loading delay — best possible LCP impact.

Color Palette

11 unique colors

21:1 AAA Light

#ffffff

Background· 38.50000000000001%

#000000

Background· 33.1%

#434667

Primary· 3.9%

#17151c

Secondary· 2.4%

#2f3148

Secondary· 2.1%

#00001d

Accent· 0%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(14)connect.facebook.net(2)me-talk.ru(1)mc.yandex.ru(1)web.webformscr.com(1)

Website Identity

libfl.ru

28 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RUru

Social Profiles

YouTube Telegram

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Last analyzed: 09 May 2026 at 05:16

Historical Analysis & Change Tracking