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aha.ch

https://aha.ch· First analyzed 24 May 2026· Updated 24 May 2026
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aha.ch
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Mobile

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Hosting Provider

DV Bern AG

IP Address

185.125.166.46

Site Location

🇨🇭 Switzerlandvia tld

Server Location

🇨🇭 Heimberg, Switzerland

ASN

AS203732

Server

Microsoft IIS

Nameservers

dns2.weserve.ch.dns1.weserve.ch.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
841 ms10%
Speed Index
1.1 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.8 MB
53 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
DV Bern AG

Technology Stack

12 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Other

1
AOS (Animate On Scroll)

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Advertising

1
Google Ads

Web Servers

1
Microsoft IISv10.0

Frameworks

1
ASP.NET

Libraries

1
Slick Carousel

Security

1
reCAPTCHA

Customer Support

1
Zendesk

SEO Analysis

C68/100
19
7
1
Meta Tags15/15
Content11/12
Headings8/8
Technical16/25
E-E-A-T0/7
Images1/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
A
aha.chaha.ch

aha! Swiss Allergy Centre - aha! Swiss Allergy Centre

In Switzerland three million people are affected by some form of allergy and intolerance. aha! Swiss Allergy Centre supports you on this path.

Title Length53 chars

Recommended: 50-60 chars (~316px / 580px)

Description Length142 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (10/13) — critical for accessibility and SEO

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

543 URLs

robots.txt

47 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

25/100
Needs Work
8 9 2

Sponsored

AI & LLM Readiness

D43/100
Bot Access
20/25
Machine Read.
11/25
Schema Data
0/25
Citation
12/25

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:7%
Words:923
Token eff.:Optimal
Sections/1K:27.1
Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary22w
Descriptive Headingsavg 2.5w
Canonical URL
Open Graph3/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
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.
B
72/100
11
Passed
3
Critical
2
Warnings
Images & Alt Text
15/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
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...
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.
33/100
D
223 mg
CO₂e / view
1.8 MB
Page Weight
60%
Cleaner Than
New Visitor
254 mg
vs
Returning (cached)
127 mg
Annual (10K/mo)
26.7 kg
Emission Segments
Data Center
50 mg
Network
53 mg
Device
119 mg
Resource Breakdown
JavaScript
94.3 KB
Images
551.3 KB
CSS
138.1 KB
HTML
14.9 KB
Other
1000.6 KB
Green Hosting Not Verified
DV Bern AG
6 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
F

Security Score

21%Critical
Interactive

HTTPS

No WAF

63d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

28.04.2026

Valid Until

27.07.2026

Subject Alternative Names (2)

aha.chwww.aha.ch

SHA-256 Fingerprint

08:AD:F2:E0:44:EE:4C:AF:9A:63:5E:B5:E2:70:82:A9:52:80:65:FE...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-language
de-CH
content-type
text/html;charset=UTF-8
date
Sun, 24 May 2026 23:22:08 GMT
expires
Sun, 24 May 2026 23:22:09 GMT
server
Microsoft-IIS/10.0
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

70

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

aha-ch.mail.protection.outlook.com

Domain Information

aha.ch

DNSSEC
Not Enabled

Privacy & Compliance

Usercentrics

Cookie Consent Banner
Usercentrics
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Usercentrics
Privacy policy page linked

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
61/100
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, initial-scale=1.0, user-scalable=yes
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG AAA
82/100
Readability
/30
26/30

21px · LH 1.50

Hierarchy
/20
17/20

1.88x ratio · ✓ H1→H6

WCAG
/25
24/25

7.09:1 min contrast

Performance
/25
15/25

1 font · 2 req

Heading Font

Open Sans

Sans40px

Body Font

Open Sans

Sans21px

Contrast Ratio

7.09:1

WCAG AAA (≥7:1)

Reading Comfort

~37 CPL

Narrow lines
40px
h1
22px
h2
42px
h3
21px
p
Major Third
Scale

✅ Excellent readability: 21px body text is ideal for all devices.

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

⚠️ Hard to read: Flesch score 44/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.1:1).

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

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

Buy on MyFontsFlesch 44

Color Palette

12 unique colors
6.78:1 AA Light
#ffffff
Primary· 28.400000000000002%
#5b5b5d
Other· 5.5%
#ccda2e
Primary· 14.100000000000001%
#ecedcc
Secondary· 6.3%
#bbc382
Secondary· 5.8%
#d1d190
Secondary· 3.4%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

24 Resources

17
Scripts
7
Styles
8
Async
0
Defer

Top Script Sources

local(7)googletagmanager.com(5)app.usercentrics.eu(2)cdn.tarteaucitron.io(2)tarteaucitron.io(1)

Website Identity

aha.ch

0313599050
Location detected: 🇨🇭 Switzerlandvia tld
📧 Microsoft 365en

Sponsored

Last analyzed: 24 May 2026 at 23:22

Historical Analysis & Change Tracking