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bookz.ru

https://bookz.ru· First analyzed 02 May 2026· Updated 02 May 2026
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bookz.ru
Desktop screenshot of bookz.ru
Mobile screenshot of bookz.ru
Mobile

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Hosting Provider

Mastertel ISP

IP Address

31.44.83.194

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS29226

Organization

Mastertel ISP

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ada.ns.cloudflare.com.jack.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
714 ms10%
Speed Index
928 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
7.5 MB
160 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Hybrid
⚡ SSG
Frontend
Framework
Next.js
Infrastructure
Hosting
Mastertel ISP
CDN
Cloudflare

Technology Stack

3 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginxv1.29.0

SEO Analysis

C67/100
21
7
1
Meta Tags5/15
Content10/12
Headings6/8
Technical18/25
E-E-A-T3/7
Images5/7
Links5/5
URL5/5
Social1/5
Freshness2/4
Mobile4/4
Indexability3/3
B
bookz.rubookz.ru

Электронная библиотека - скачать книги бесплатно, журналы, словари ...

Коллекция бесплатных книг в электронном варианте :: BookZ.ru

Title truncated.
Title Length80 chars

Recommended: 50-60 chars (~491px / 580px)

Description Length60 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (80 chars, ~491px). Will be truncated in search results.

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

50 URLs

robots.txt

23 rules

Allows all crawlers

Local SEO

Local Search Readiness

6/100
Poor
2 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

D42/100
Bot Access
20/25
Machine Read.
12/25
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
Text ratio:5%
Words:1,831
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary15w
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 (9)
AI readiness recommendation preview...
Upgrade to view recommendations

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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.
C
69/100
10
Passed
3
Critical
1
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
16/20
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
7/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
6/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 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.
22/100
F
951 mg
CO₂e / view
7.5 MB
Page Weight
5%
Cleaner Than
New Visitor
1.09 g
vs
Returning (cached)
543 mg
Annual (10K/mo)
114.1 kg
Emission Segments
Data Center
212 mg
Network
228 mg
Device
510 mg
Resource Breakdown
JavaScript
492.9 KB
Images
6.2 MB
CSS
28.2 KB
Fonts
754.9 KB
HTML
41.7 KB
Other
616 B
Green Hosting Not Verified
Mastertel ISP
9 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

74d

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

17.04.2026

Valid Until

16.07.2026

Subject Alternative Names (1)

bookz.ru

SHA-256 Fingerprint

3F:42:8F:3B:EC:BC:72:15:D0:5D:68:F9:97:C7:F2:FE:CC:01:68:29...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
⚪ Custom(s-maxage=300, stale-while-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Sat, 02 May 2026 22:31:28 GMT
etag
"14ztbrqahzv5yj4"
server
nginx/1.29.0
Good Warning Issue

Email Infrastructure

Yandex Mail

Score

45

SPF
DKIM
DMARC

MX Records (1)

mx.yandex.ru

Domain Information

bookz.ru

Domain Age
23 years

Created

10.04.2003

Expires

10.04.2027

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.
C
60/100
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

__fontArial_d9b604

WCAG Partial
70/100
Readability
/30
14/30

13px · LH --

Hierarchy
/20
19/20

2.15x ratio · ✓ H1→H6

WCAG
/25
17/25

3.31:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

__fontArial_d9b604

Sans28px

Body Font

__fontArial_d9b604

Sans13px

Contrast Ratio

3.31:1

11 issues

Reading Comfort

~48 CPL

Optimal (45–75)
28px
h1
13px
p

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

✅ Optimal line length: ~48 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 37/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 3.3:1).

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

Buy on MyFontsFlesch 37

Color Palette

6 unique colors
Light
#fafafa
Background· 51.599999999999994%
#27656f
Primary· 9%
#3b3a9a
Secondary· 8.7%
#816b65
Secondary· 8.2%
#bac0c7
Border· 5.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

1

Categories

1

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

18 Resources

15
Scripts
3
Styles
2
Async
12
Defer

Top Script Sources

local(13)yandex.ru(1)yastatic.net(1)

Website Identity

bookz.ru

support@bookz.ru
23 years old
Location detected: 🇷🇺 Russiavia tld
RU-CENTER-RU📧 Yandex Mailru

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Last analyzed: 02 May 2026 at 22:31

Historical Analysis & Change Tracking