0fs.ru

https://0fs.ru· First analyzed 19 May 2026· Updated 19 May 2026

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0fs.ru

Mobile

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Hosting Provider

JSC Columbia-Telecom

IP Address

83.167.73.188

Site Location

🇷🇺 Russiavia tld

Server Location

🇷🇺 Volgograd, Russia

ASN

AS39435

Organization

JSC Columbia-Telecom

Server

OpenResty

CDN

Cloudflare

WAF

Cloudflare

Nameservers

newt.ns.cloudflare.com.zelda.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.9 s10%

Speed Index

3.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1 KB

1 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

JSC Columbia-Telecom

CDN

Cloudflare

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Icon Libraries

Font Awesome

Web Servers

OpenResty

SEO Analysis

F34/100

Meta Tags4/15

Content0/12

Headings6/8

Technical12/25

E-E-A-T0/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

0fs.ru0fs.ru

Coming Soon

No description available for this page.

Title Length11 chars

Recommended: 50-60 chars (~68px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Very thin content (15 words). Search engines need substantial content for ranking.

9 issues found

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Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100

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

F28/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

2/25

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:3%

Words:13

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

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 (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.

74/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

14/20

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

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•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.

61/100

A+

<0.001 g

CO₂e / view

1.5 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

24 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

HTML

1.5 KB

Green Hosting Not Verified

JSC Columbia-Telecom

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

57d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp384r1) (384 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.04.2026

Valid Until

16.07.2026

Subject Alternative Names (1)

0fs.ru

SHA-256 Fingerprint

23:B2:78:29:B9:32:F5:4D:F0:A6:D1:F3:42:2D:3F:7C:9A:1A:F6:AE...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

1221

content-type

text/html; charset=utf-8

date

Tue, 19 May 2026 22:36:13 GMT

etag

"b5b-5b9d36a815134-gzip"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

Domain Information

0fs.ru

Domain Age

6y 3m

Created

01.02.2020

Expires

01.02.2027

Registrar

TIMEWEB-RU

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

61/100

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=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

-apple-system

WCAG AA

78/100

Readability

/30

19/30

20px · LH 1.00

Hierarchy

/20

17/20

1.96x ratio · ✓ H1→H6

WCAG

/25

22/25

4.95:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Sans39px

Body Font

-apple-system

Sans20px

Contrast Ratio

4.95:1

WCAG AA (≥4.5:1)

Reading Comfort

Single Font Family

center aligned

39px

20px

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

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.0:1).

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

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

Color Palette

6 unique colors

3.72:1 AA Large Light

#f5f5f5

Background· 98%

#7e7e7e

Other· 0.2%

#ffcc33

Primary· 0.8999999999999999%

#ece5cd

Secondary· 0.4%

#edcf73

Accent· 0%

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Website Identity

0fs.ru

6 years old

Location detected: 🇷🇺 Russiavia tld

TIMEWEB-RUen

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Last analyzed: 19 May 2026 at 22:36

Historical Analysis & Change Tracking