StackOptic
Back to Search
1sept.ru favicon

1sept.ru

https://1sept.ru· First analyzed 26 Apr 2026· Updated 26 Apr 2026
Export
1sept.ru
Desktop screenshot of 1sept.ru
Mobile screenshot of 1sept.ru
Mobile

Sponsored

Hosting Provider

comcor.ru

IP Address

82.138.56.235

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Moscow, Russia

ASN

AS8732

Nameservers

ns4-l2.nic.ru.ns1.1sept.ru.ns8-l2.nic.ru.ns0.1sept.ru.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
607 ms10%
Speed Index
789 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
4 MB
88 requests

Image Optimization

Lazy LoadWebPResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Tailwind CSS
Infrastructure
Hosting
comcor.ru

Technology Stack

3 Technologies Detected

CSS Frameworks

2
Bootstrap
Tailwind CSS

Icon Libraries

1
Font Awesome

SEO Analysis

C63/100
19
7
2
Meta Tags7/15
Content9/12
Headings3/8
Technical18/25
E-E-A-T3/7
Images4/7
Links5/5
URL5/5
Social2/5
Freshness0/4
Mobile4/4
Indexability3/3
1
1sept.ru1sept.ru

Первое сентября

Официальный сайт Издательского дома Первое сентября содержит актуальную информация о компании. В новостном разделе публикуются актуальные новости образования...

Description truncated.
Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length336 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (39/42) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

1,010 URLs

robots.txt

19 rules

Sitemap reference found

Local SEO

Local Search Readiness

6/100
Poor
2 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

D43/100
Bot Access
20/25
Machine Read.
10/25
Schema Data
0/25
Citation
13/25

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:5%
Words:312
Token eff.:Optimal
Sections/1K:6.4
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 3w
Canonical URL
Open Graph1/3
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

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
61/100
10
Passed
5
Critical
0
Warnings
Images & Alt Text
3/20
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
15/15
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
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.
29/100
F
509 mg
CO₂e / view
4.0 MB
Page Weight
15%
Cleaner Than
New Visitor
582 mg
vs
Returning (cached)
291 mg
Annual (10K/mo)
61.1 kg
Emission Segments
Data Center
114 mg
Network
122 mg
Device
273 mg
Resource Breakdown
JavaScript
268.6 KB
Images
771.7 KB
CSS
274.8 KB
HTML
9.1 KB
Other
2.7 MB
Green Hosting Not Verified
comcor.ru
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

2d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

28.03.2025

Valid Until

29.04.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.1sept.ru1sept.ru

SHA-256 Fingerprint

B8:C9:EA:4D:66:C6:EE:A3:C8:D8:CB:E5:3F:E0:10:A1:E7:EE:87:56...

Recommendations

Security recommendation preview

Upgrade to view recommendations
Upgrade to view header details

HTTP Headers

Developer Console

cache-control
🟡 0s(max-age=0, must-revalidate, public)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Sun, 26 Apr 2026 23:23:13 GMT
etag
W/"b60e2d85-1171200"
expires
Sun, 26 Apr 2026 21:04:31 GMT
Good Warning Issue

Email Infrastructure

Yandex Mail

Score

73

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

mx.yandex.net

Domain Information

1sept.ru

Domain Age
17y 8m

Created

25.08.2008

Expires

25.08.2026

Registrar

REGRU-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.
B
70/100
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.
Viewport
width=device-width, initial-scale=1
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial
62/100
Readability
/30
24/30

16px · LH 1.50

Hierarchy
/20
6/20
WCAG
/25
10/25

1:1 min contrast

Performance
/25
22/25

System fonts

Heading Font

-apple-system

Sans

Body Font

-apple-system

Sans16px

Contrast Ratio

1:1

8 issues

Reading Comfort

~34 CPL

Narrow lines
27px
h2
21px
h4
16px
p

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

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

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.0:1).

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

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

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

Color Palette

12 unique colors
Light
#8c877b
Other· 6%
#f8f9fa
Primary· 25.799999999999997%
#5f574c
Secondary· 13.299999999999999%
#bea993
Secondary· 7.6%
#dcc7b3
Secondary· 6.7%
#3e362d
Secondary· 6%
#e0e0d7
Secondary· 6%
#b1d7e8
Accent· 5.8%

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

Sponsored

Scripts & Styles

6 Resources

5
Scripts
1
Styles
5
Async
0
Defer

Top Script Sources

stat.sputnik.ru(1)mc.yandex.ru(1)yandex.ru(1)yastatic.net(1)code.jivosite.com(1)

Website Identity

1sept.ru

17 years old
Location detected: 🇷🇺 Russiavia tld
REGRU-RU📧 Yandex Mailru

Social Profiles

Telegram

Sponsored

Last analyzed: 26 Apr 2026 at 23:23

Historical Analysis & Change Tracking