library.ru

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

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library.ru

Mobile

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Hosting Provider

.masterhost

IP Address

90.156.201.42

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS25532

Server

Apache

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tina.ns.cloudflare.com.vern.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

420 ms10%

Speed Index

546 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

277 KB

51 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

.masterhost

CDN

Cloudflare

Technology Stack

2 Technologies Detected

CSS Frameworks

Tailwind CSS

Web Servers

Apache

SEO Analysis

D46/100

Meta Tags12/15

Content11/12

Headings0/8

Technical7/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

library.rulibrary.ru

Библиотека, книга, чтение: информационно-справочный портал Library.ru

библиотека, книга, чтение, информационно-справочный портал Library.ru, библиотечный портал, виртуальная справка, library

Title Length69 chars

Recommended: 50-60 chars (~416px / 580px)

Description Length120 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

14 issues found

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Crawlability

Sitemap

robots.txt

6 rules

Local SEO

Local Search Readiness

2/100

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

F34/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

6/25

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

Text ratio:19%

Words:938

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary17w

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

44/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

3/20

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

14/15

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

1/15

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.

53/100

A+

34 mg

CO₂e / view

277.1 KB

Page Weight

90%

Cleaner Than

New Visitor

39 mg

Returning (cached)

20 mg

Annual (10K/mo)

4.1 kg

Emission Segments

Data Center

8 mg

Network

8 mg

Device

18 mg

Resource Breakdown

JavaScript

139.6 KB

Images

105.2 KB

CSS

21.0 KB

HTML

9.5 KB

Other

1.7 KB

Green Hosting Not Verified

.masterhost

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

58d

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

07.04.2026

Valid Until

06.07.2026

Subject Alternative Names (2)

*.library.rulibrary.ru

SHA-256 Fingerprint

2C:58:A5:3C:8E:76:35:B5:81:22:5B:6D:EC:79:43:B8:11:EB:F8:55...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(max-age=0)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=windows-1251

date

Sat, 09 May 2026 04:36:32 GMT

expires

Sat, 09 May 2026 04:36:32 GMT

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

emx.mail.ru

Domain Information

library.ru

Domain Age

28y 3m

Created

28.01.1998

Expires

28.02.2027

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.

42/100

Not 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.

4 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial

WCAG AA

63/100

Readability

/30

11/30

13px · LH --

Hierarchy

/20

10/20

WCAG

/25

22/25

5.07:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Arial

Body Font

Arial

Sans13px

Contrast Ratio

5.07:1

WCAG AA (≥4.5:1)

Reading Comfort

~44 CPL

Narrow lines

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.1:1).

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

Color Palette

6 unique colors

Light

#ffffff

Background· 36.1%

#7c636e

Primary· 8.4%

#a5aeb8

Secondary· 8%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

acint.net(1)mc.yandex.ru(1)site.yandex.net(1)local(1)w.uptolike.com(1)

Website Identity

library.ru

info@library.ru

28 years old

Location detected: 🇷🇺 Russiavia tld

RU-CENTER-RU

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Last analyzed: 09 May 2026 at 04:36

Historical Analysis & Change Tracking