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ics.tools

https://ics.tools· First analyzed 08 Sept 2026· Updated 08 Sept 2026
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ics.tools
Desktop screenshot of ics.tools
Mobile screenshot of ics.tools
Mobile

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Hosting Provider

GitHub Pages
pages.github.com

IP Address

185.199.109.153

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 San Francisco, United States

ASN

AS54113

Organization

GitHub, Inc

Server

GitHub.com

CDN

Fastly

Nameservers

javon.ns.cloudflare.com.danica.ns.cloudflare.com.

Performance

83

Core Web Vitals

Weight

First Contentful Paint
2.0 s10%
Speed Index
2.6 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
10 KB
4 requests
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Jekyllv3.10.0
Infrastructure
Platform
GitHub Pages
CDN
Fastly

Technology Stack

1 Technologies Detected

Fonts

1
Google Fonts

SEO Analysis

D59/100
18
6
1
Meta Tags5/15
Content10/12
Headings6/8
Technical17/25
E-E-A-T0/7
Images0/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
I
ics.toolsics.tools

ics.tools | Ansammlung von Kalenderdateien für gesetzliche Feiertag...

Deutsche Feiertage und Schulferien als Kalender

Title truncated.
Title Length103 chars

Recommended: 50-60 chars (~616px / 580px)

Description Length47 chars

Recommended: 120-160 chars

Issues (1)

  • • Title is too long (103 chars, ~616px). Will be truncated in search results.

7 issues found

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Crawlability

Sitemap

Type: standard

2 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

7/100
Poor
2 14 1

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

D52/100
Bot Access
20/25
Machine Read.
16/25
Schema Data
2/25
Citation
14/25

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
code blocks
Text ratio:32%
Words:334
Token eff.:Optimal
Sections/1K:29.9
Depth:1/5

Structured Data

1 JSON-LD
WebSite

Citation Readiness

Opening Summary33w
Descriptive Headingsavg 3.3w
Canonical URL
Open Graph2/3
Twitter Card1/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (8)
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.
A
82/100
11
Passed
1
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
16/20
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
13/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

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.
64/100
A+
1 mg
CO₂e / view
9.7 KB
Page Weight
95%
Cleaner Than
New Visitor
1 mg
vs
Returning (cached)
<0.001 g
Annual (10K/mo)
144 g
Emission Segments
Data Center
<0.001 g
Network
<0.001 g
Device
<0.001 g
Resource Breakdown
CSS
4.7 KB
Fonts
1.9 KB
HTML
3.0 KB
Green Hosting Not Verified
GitHub Pages
3 recommendations
  • •Carbon footprint recommendation preview...
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B

Security Score

76%Good
Static / Informational

HTTPS

No WAF

76d

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

26.08.2026

Valid Until

24.11.2026

Subject Alternative Names (2)

ics.toolswww.ics.tools

SHA-256 Fingerprint

D3:8B:B4:EC:35:9A:89:0F:80:F7:14:9C:74:43:BB:C9:55:34:D8:E4...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
🟡 600s(max-age=600)
content-encoding
📦 Gzip(gzip)
content-length
2822
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

80

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

Domain Information

ics.tools

Domain Age
5y 6m

Created

12.03.2021

Expires

12.03.2027

Last Updated

12.08.2026

Registrar

NameCheap, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

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.
D
53/100
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
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Open Sans

WCAG Partial
77/100
Readability
/30
23/30

18px · LH 1.50

Hierarchy
/20
18/20

2.95x ratio

WCAG
/25
16/25

3.67:1 min contrast

Performance
/25
20/25

1 font · 2 req

Heading Font

Open Sans

Sans52px

Body Font

Open Sans

Sans18px

Contrast Ratio

3.67:1

3 issues

Reading Comfort

~39 CPL

Narrow lines
52px
h1
26px
h2
21px
h3
18px
p

✅ Excellent readability: 18px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 7/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 3.7:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 3.0x larger than body text.

GGoogle FontsFlesch 7

Color Palette

6 unique colors
Light
#ffffff
Text· 45%
#156a86
Accent· 24.5%
#158f61
Accent· 14.1%
#167f71
Primary· 9.5%
#b9cbc7
Secondary· 4.6%
#338782
Secondary· 2.3%

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

1 Resources

0
Scripts
1
Styles
0
Async
0
Defer

Top Script Sources

Website Identity

ics.tools

Deutsche Feiertage und Schulferien als Kalender

ics.tools/
5 years old
Location detected: 🇺🇸 United Statesvia ip
NameCheap, Inc.de-DE

Social Profiles

GitHub

Sponsored

Last analyzed: 08 Sept 2026 at 19:22

Historical Analysis & Change Tracking