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ijs.si

https://ijs.si· First analyzed 23 Apr 2026· Updated 23 Apr 2026
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ijs.si
Desktop screenshot of ijs.si
Mobile screenshot of ijs.si
Mobile

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Hosting Provider

ARNES provider

IP Address

193.2.4.17

Site Location

🇸🇮 Sloveniavia tld

Server Location

🇸🇮 Ljubljana, Slovenia

ASN

AS2107

Server

Nginx

Nameservers

nsp.dnsnode.net.niobe.ijs.si.aa.arnes.si.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
447 ms10%
Speed Index
581 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.8 MB
40 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
ARNES provider

Technology Stack

1 Technologies Detected

Web Servers

1
Nginx

SEO Analysis

D47/100
12
9
2
Meta Tags4/15
Content11/12
Headings0/8
Technical11/25
E-E-A-T0/7
Images4/7
Links5/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
I
ijs.siijs.si

IJS - Institut "Jožef Stefan"

No description available for this page.

Title Length29 chars

Recommended: 50-60 chars (~173px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing meta description — important for click-through rates in SERPs
  • • Missing H1 tag — every page should have exactly one H1

11 issues found

Upgrade to view details

Crawlability

Sitemap
robots.txt

172 rules

Local SEO

Local Search Readiness

2/100
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

F34/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
0/25
Citation
7/25

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:9%
Words:1,074
Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary21w
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 (12)
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
63/100
7
Passed
5
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
3/20
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.
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.
32/100
D
224 mg
CO₂e / view
1.8 MB
Page Weight
60%
Cleaner Than
New Visitor
256 mg
vs
Returning (cached)
128 mg
Annual (10K/mo)
26.8 kg
Emission Segments
Data Center
50 mg
Network
54 mg
Device
120 mg
Resource Breakdown
JavaScript
9.1 KB
Images
1.7 MB
CSS
11.2 KB
HTML
12.1 KB
Green Hosting Not Verified
ARNES provider
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

45%Poor
Critical / Transactional

HTTPS

No WAF

239d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

Hellenic Academic and Research Institutions CA

Key Algorithm

RSA (4096 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

18.12.2025

Valid Until

18.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

ijs.siwww.ijs.si

SHA-256 Fingerprint

B4:E3:F0:B1:A0:99:19:BD:E8:02:41:86:D9:EE:7C:2A:DE:46:65:21...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🟡 300s(max-age=300)
content-encoding
📦 Gzip(gzip)
content-security-policy
report-to default; default-src 'none'; img-src 'self' https:...
content-type
text/html; charset=utf-8
date
Thu, 23 Apr 2026 04:31:34 GMT
expect-ct
max-age=0, report-uri="https://ea8aa744c9ccb88053dd1aa73fa5c...
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

65

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

mail4.ijs.si
mail.ijs.si

Domain Information

ijs.si

Domain Age
34y 2m

Created

06.02.1992

Expires

06.06.2026

Last Updated

12.05.2025

Registrar

Arnes

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.
D
48/100
Not 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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Verdana

WCAG Partial
56/100
Readability
/30
12/30

13px · LH 1.35

Hierarchy
/20
10/20
WCAG
/25
14/25

3.23:1 min contrast

Performance
/25
20/25

System fonts

Heading Font

Verdana

Body Font

Verdana

Sans13px

Contrast Ratio

3.23:1

10 issues

Reading Comfort

~58 CPL

Optimal (45–75)
13px
p

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

⚠️ Tight line spacing (1.35). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~58 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 10 elements below WCAG AA threshold (min 3.2:1).

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

Buy on MyFontsFlesch 0

Color Palette

10 unique colors
Light
#ffffff
Background· 51.099999999999994%
#6399d2
Primary· 15%
#3d4177
Secondary· 6.7%
#092c4b
Accent· 6.3%
#1c759f
Accent· 5.3%
#cbdce3
Secondary· 3.8%
#69809d
Secondary· 3.4%
#efeee9
Secondary· 3%

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

5 Resources

1
Scripts
4
Styles
0
Async
0
Defer

Top Script Sources

local(1)

Website Identity

ijs.si

info@ijs.si
34 years old
Location detected: 🇸🇮 Sloveniavia tld
Arnes

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Last analyzed: 23 Apr 2026 at 04:31

Historical Analysis & Change Tracking