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stsl.ru

https://stsl.ru· First analyzed 14 May 2026· Updated 14 May 2026
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stsl.ru
Desktop screenshot of stsl.ru
Mobile screenshot of stsl.ru
Mobile

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Hosting Provider

JSC "TIMEWEB"

IP Address

176.57.220.23

Site Location

🇷🇺 Russiavia phone

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS9123

Organization

JSC "TIMEWEB"

Server

Nginx

Nameservers

ns8-cloud.nic.ru.ns3-l2.nic.ru.ns4-l2.nic.ru.ns8-l2.nic.ru.+1 more

Performance

100

Core Web Vitals

Weight

First Contentful Paint
675 ms10%
Speed Index
878 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
26.7 MB
97 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
JSC "TIMEWEB"

Technology Stack

7 Technologies Detected

UI Components

2
SwiperLightbox

Other

1
GSAP

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Web Servers

1
Nginx

Security

1
reCAPTCHA

SEO Analysis

D54/100
15
9
2
Meta Tags13/15
Content12/12
Headings1/8
Technical13/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile1/4
Indexability3/3
S
stsl.rustsl.ru

Свято-Троицкая Сергиева Лавра - Официальный сайт

Официальный сайт Свято-Троицкой Сергиевой Лавры преподобного Сергия Радонежского. История и современность, новости и проповеди, подробная информация для пало...

Description truncated.
Title Length48 chars

Recommended: 50-60 chars (~297px / 580px)

Description Length174 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (46/53) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

37 rules

Local SEO

Local Search Readiness

15/100
Poor
5 10 2

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

Sponsored

AI & LLM Readiness

F38/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
8/25

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
nav
Text ratio:7%
Words:1,393
Token eff.:Optimal
Sections/1K:3.6
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary567w
Descriptive Headingsavg 10w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
C
60/100
7
Passed
4
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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.
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.
28/100
F
3.39 g
CO₂e / view
26.7 MB
Page Weight
5%
Cleaner Than
New Visitor
3.87 g
vs
Returning (cached)
1.93 g
Annual (10K/mo)
406.2 kg
Emission Segments
Data Center
756 mg
Network
812 mg
Device
1.82 g
Resource Breakdown
JavaScript
362.6 KB
Images
4.5 MB
CSS
2.1 MB
Fonts
4.9 KB
HTML
19.5 KB
Other
19.8 MB
Green Hosting Not Verified
JSC "TIMEWEB"
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

41%Poor
Interactive

HTTPS

No WAF

80d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

04.05.2026

Valid Until

02.08.2026

Subject Alternative Names (4)

lavra.rustsl.ruwww.lavra.ruwww.stsl.ru

SHA-256 Fingerprint

22:D7:8F:CA:08:8F:5E:D9:33:E5:2E:42:21:39:2D:55:04:82:B4:D3...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(no-store, no-cache, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Thu, 14 May 2026 02:52:14 GMT
expires
Thu, 19 Nov 1981 08:52:00 GMT
pragma
no-cache
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (2)

mx1.timeweb.ru
mx2.timeweb.ru

Domain Information

stsl.ru

Domain Age
25y 7m

Created

25.09.2000

Expires

27.09.2026

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
68/100
Mobile Friendly11 breakpoints
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

Open Sans

WCAG Partial
64/100
Readability
/30
23/30

20px · LH 1.50

Hierarchy
/20
9/20
WCAG
/25
14/25

1:1 min contrast

Performance
/25
18/25

1 font · 3 req

Heading Font

Open Sans

Sans

Body Font

Open Sans

Sans20px

Contrast Ratio

1:1

26 issues

Reading Comfort

~43 CPL

Narrow lines
18px
h3
20px
p

✅ Excellent readability: 20px body text is ideal for all devices.

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

✅ Easy to read: Flesch score 95/100 — accessible to general audiences.

⚠️ Partial contrast: 26 elements below WCAG AA threshold (min 1.0:1).

✅ Lean font stack: 1 font families keeps load times fast.

✅ Smart font loading: font-display: swap prevents invisible text during load (FOIT).

GGoogle FontsFlesch 95

Color Palette

12 unique colors
3.53:1 AA Large Dark
#353631
Text· 25.599999999999998%
#878c7d
Other· 8.2%
#afa189
Primary· 6.9%
#77705d
Secondary· 6%
#a69174
Secondary· 5.8%
#cdc3af
Secondary· 5.6%
#967556
Secondary· 5%
#130f0f
Secondary· 4.2%

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

7 Resources

3
Scripts
4
Styles
1
Async
0
Defer

Top Script Sources

local(2)mc.yandex.ru(1)

Website Identity

stsl.ru

office@lavra.ru
+74965405721
25 years old
Location detected: 🇷🇺 Russiavia phone
RU-CENTER-RUru

Social Profiles

YouTubeTelegram

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Last analyzed: 14 May 2026 at 02:52

Historical Analysis & Change Tracking