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phdays.com

https://phdays.com· First analyzed 27 May 2026· Updated 27 May 2026
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phdays.com
Desktop screenshot of phdays.com
Mobile screenshot of phdays.com
Mobile

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Hosting Provider

LLC Selectel

IP Address

178.248.239.191

Site Location

🇷🇺 Russiavia ip

Server Location

🇷🇺 St Petersburg, Russia

ASN

AS51115

Organization

LLC Selectel

Server

QRATOR

Nameservers

ns3.ptsecurity.com.ns4.ptsecurity.com.

Performance

91

Core Web Vitals

Weight

First Contentful Paint
1.4 s10%
Speed Index
1.8 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.2 MB
86 requests

Image Optimization

Lazy LoadWebP
0–49
50–89
90–100

Architecture Stack

Hybrid
🔀 Hybrid
Frontend
Framework
Next.js
Infrastructure
Hosting
LLC Selectel

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

2 Technologies Detected

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

SEO Analysis

D58/100
18
7
2
Meta Tags8/15
Content6/12
Headings3/8
Technical16/25
E-E-A-T0/7
Images3/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
P
phdays.comphdays.com

Positive Hack Days Fest

Международный киберфестиваль для всех, кто хочет погрузиться в мир кибербезопасности. Любой желающий может узнать, как устроен цифровой мир, повысить уровень...

Description truncated.
Title Length23 chars

Recommended: 50-60 chars (~138px / 580px)

Description Length199 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (4/6) — critical for accessibility and SEO

9 issues found

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Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

robots.txt

5 rules

Sitemap reference found

Local SEO

Local Search Readiness

0/100
Poor
15 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

D45/100
Bot Access
20/25
Machine Read.
15/25
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.txtinvalid
llms-full.txt
Semantic HTML
Heading Hierarchy
nav
Text ratio:1%
Words:364
Token eff.:Optimal
Sections/1K:71.4
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary22w
Descriptive Headingsavg 1.9w
Canonical URL
Open Graph3/3
Twitter Card3/3
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.
B
71/100
10
Passed
5
Critical
1
Warnings
Images & Alt Text
18/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
10/20
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
4/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
4 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.
47/100
C
151 mg
CO₂e / view
1.2 MB
Page Weight
70%
Cleaner Than
New Visitor
173 mg
vs
Returning (cached)
86 mg
Annual (10K/mo)
18.1 kg
Emission Segments
Data Center
34 mg
Network
36 mg
Device
81 mg
Resource Breakdown
JavaScript
884.5 KB
Images
1.3 KB
CSS
88.1 KB
Fonts
207.2 KB
HTML
40.6 KB
Other
988 B
Green Hosting Not Verified
LLC Selectel
6 recommendations
  • •Carbon footprint recommendation preview...
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A+

Security Score

93%Excellent
Static / Informational

HTTPS

No WAF

290d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GlobalSign nv-sa

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.02.2026

Valid Until

14.03.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.phdays.comphdays.com

SHA-256 Fingerprint

5E:B9:10:1F:06:28:A0:B0:02:B5:61:F5:7A:36:55:6C:9F:77:B8:5B...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
⚪ Custom(s-maxage=60, stale-while-revalidate=31535940)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Wed, 27 May 2026 13:23:16 GMT
etag
"sv4we004lp3so1"
referrer-policy
origin
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

45

SPF
DKIM
DMARC

MX Records (3)

mx3.phdays.com
mx2.phdays.com
mx1.phdays.com

Domain Information

phdays.com

Domain Age
15y 2m

Created

09.03.2011

Expires

09.03.2027

Last Updated

07.03.2026

Registrar

Regional Network Information Center, JSC dba RU-CENTER

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
71/100
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, initial-scale=1

Typography & Readability

positiveFont

WCAG Partial
65/100
Readability
/30
21/30

14px · LH 1.50

Hierarchy
/20
8/20
WCAG
/25
16/25

1:1 min contrast

Performance
/25
20/25

1 font · 3 req

Heading Font

positiveFont

Sans

Body Font

positiveFont

Sans14px

Contrast Ratio

1:1

17 issues

Reading Comfort

~35 CPL

Narrow lines
44px
h2
62px
h3
28px
h4
14px
p

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

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

⚠️ Partial contrast: 17 elements below WCAG AA threshold (min 1.0:1).

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

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

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

Buy on MyFontsFlesch 61

Color Palette

8 unique colors
19.09:1 AAA Light
#f4f4f4
Background· 52.39999999999999%
#000000
Text· 8.9%
#2c8785
Primary· 9.1%
#629782
Secondary· 9.1%
#15313f
Secondary· 8.1%
#3e515b
Secondary· 5.4%
#3dbab3
Accent· 3.7%
#b2d8c2
Secondary· 3.4%

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

23 Resources

13
Scripts
10
Styles
11
Async
0
Defer

Top Script Sources

local(10)mc.yandex.ru(1)cdn.uxfeedback.ru(1)api.mindbox.ru(1)

Website Identity

phdays.com

15 years old
Location detected: 🇷🇺 Russiavia ip
Regional Network Information Center, JSC dba RU-CENTER

Social Profiles

Telegram

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Last analyzed: 27 May 2026 at 13:23

Historical Analysis & Change Tracking