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biosens.rs

https://biosens.rs· First analyzed 24 May 2026· Updated 24 May 2026
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biosens.rs
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Hosting Provider

Academic Network of Serbia

IP Address

147.91.172.163

Site Location

🇷🇸 Serbiavia tld

Server Location

🇷🇸 Novi Sad, Serbia

ASN

AS13092

Organization

Academic Network of Serbia

Server

Nginx

Nameservers

dns2.eunethosting.com.dns1.eunethosting.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
491 ms10%
Speed Index
638 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
19.2 MB
71 requests

Image Optimization

Responsive
0–49
50–89
90–100

Architecture Stack

Hybrid
⚙️ SSR
Frontend
Framework
Next.js
CMS
WordPress
Infrastructure
Hosting
Academic Network of Serbia

Technology Stack

5 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Web Servers

1
Nginx

SEO Analysis

D45/100
11
11
2
Meta Tags5/15
Content7/12
Headings3/8
Technical11/21
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile1/4
Indexability3/3
B
biosens.rsbiosens.rs

BioSense Institute

BioSense, Research and Development Institute for IT in biosystems

Title Length18 chars

Recommended: 50-60 chars (~105px / 580px)

Description Length65 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (5/5) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Local SEO

Local Search Readiness

11/100
Poor
3 12 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

F32/100
Bot Access
20/25
Machine Read.
4/25
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
navheader/footer
Text ratio:1%
Words:286
Token eff.:Too Short
Sections/1K:69.9
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 2.1w
Canonical URL
Open Graph3/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (11)
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
68/100
9
Passed
4
Critical
1
Warnings
Images & Alt Text
15/20
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
10/15
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.
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.
17/100
F
2.44 g
CO₂e / view
19.2 MB
Page Weight
5%
Cleaner Than
New Visitor
2.79 g
vs
Returning (cached)
1.39 g
Annual (10K/mo)
292.5 kg
Emission Segments
Data Center
544 mg
Network
585 mg
Device
1.31 g
Resource Breakdown
JavaScript
357.8 KB
Images
374.4 KB
CSS
24.1 KB
HTML
95.5 KB
Other
18.4 MB
Green Hosting Not Verified
Academic Network of Serbia
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
D

Security Score

56%Poor
Interactive

HTTPS

No WAF

74d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.05.2026

Valid Until

07.08.2026

Subject Alternative Names (5)

api.biosens.rsbiosens.rsbiosense.rswww.biosens.rswww.biosense.rs

SHA-256 Fingerprint

A5:4E:0C:39:64:7D:29:66:A9:2D:0D:75:A5:64:EF:8C:B4:07:BD:DF...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control
🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=utf-8
date
Sun, 24 May 2026 10:17:55 GMT
etag
"347bb-GJ+jJFrnfKFOAwT01r+kAy+hScE"
server
nginx
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

98

SPF
DKIM
DMARC

DMARC Policy

Quarantine (Moderate)

MX Records (1)

smtp.biosens.uns.ac.rs

Domain Information

biosens.rs

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Data Protection Officer mentioned

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
65/100
Mobile Friendly2 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
2 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Montserrat

WCAG Partial
55/100
Readability
/30
20/30

20px · LH 1.25

Hierarchy
/20
8/20
WCAG
/25
12/25

1.92:1 min contrast

Performance
/25
15/25

1 font · 1 req

Heading Font

Montserrat

Sans

Body Font

Montserrat

Sans20px

Contrast Ratio

1.92:1

8 issues

Reading Comfort

Single Font Family

left aligned
34px
h2
16px
h3
20px
p

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

⚠️ Tight line spacing (1.25). Increase to 1.4–1.6 for better readability.

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

⚠️ Partial contrast: 8 elements below WCAG AA threshold (min 1.9:1).

❌ 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).

Buy on MyFontsFlesch 0

Color Palette

10 unique colors
5.85:1 AA Light
#cecece
Other· 31.299999999999997%
#414a41
Text· 8.100000000000001%
#333a4c
Primary· 13.3%
#818e9a
Secondary· 8.8%
#c5c1b1
Secondary· 5.3%
#2a3d30
Secondary· 2.6%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

1
Google AnalyticsFree

User behavior and product analytics

Social Media

1
Twitter/X WidgetsFree

Social widgets and sharing tools

2

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

22 Resources

20
Scripts
2
Styles
19
Async
0
Defer

Top Script Sources

local(16)googletagmanager.com(2)google-analytics.com(1)platform.twitter.com(1)

Website Identity

biosens.rs

Location detected: 🇷🇸 Serbiavia tld
sr

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Last analyzed: 24 May 2026 at 10:18

Historical Analysis & Change Tracking