floating-point-gui.de

https://floating-point-gui.de· First analyzed 25 May 2026· Updated 25 May 2026

Export

Mobile

Sponsored

Hosting Provider

Contabo

contabo.com

IP Address

178.238.229.121

Site Location

🇩🇪 Germanyvia tld

Server Location

🇫🇷 Lauterbourg, France

ASN

AS51167

Organization

Contabo GmbH

Server

Caddy

Nameservers

ns1.domaindiscount24.net.ns3.domaindiscount24.net.ns2.domaindiscount24.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

403 ms10%

Speed Index

524 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

12 KB

5 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Contabo

Technology Stack

1 Technologies Detected

Web Servers

Caddy

SEO Analysis

D49/100

Meta Tags7/15

Content8/12

Headings6/8

Technical10/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

floating-point-gui.defloating-point-gui.de

The Floating-Point Guide - What Every Programmer Should Know About ...

Aims to provide both short and simple answers to the common recurring questions of novice programmers about floating-point numbers not 'adding up' correctly,...

Title truncated. Description truncated.

Title Length92 chars

Recommended: 50-60 chars (~565px / 580px)

Description Length310 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (92 chars, ~565px). Will be truncated in search results.
• Most images missing alt text (2/3) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

2 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F34/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

6/25

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:28%

Words:163

Token eff.:Too Short

Sections/1K:30.7

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headingsavg 1.8w

Canonical URL

Open Graph0/3

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.

57/100

Passed

Critical

Warnings

Images & Alt Text

5/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

12/20

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.

2 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.

76/100

A+

1 mg

CO₂e / view

12.2 KB

Page Weight

95%

Cleaner Than

New Visitor

1 mg

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

Images

9.4 KB

CSS

919 B

HTML

1.9 KB

Green Hosting Verified

Contabo

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

A+

Security Score

98%Excellent

Static / Informational

HTTPS

No WAF

70d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-384

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

05.05.2026

Valid Until

03.08.2026

Subject Alternative Names (1)

floating-point-gui.de

SHA-256 Fingerprint

F4:AB:DC:23:CE:7C:4B:F6:D8:85:4C:4C:52:DC:6B:87:1D:F3:1F:F0...

Upgrade to view header details

HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=2592000

content-encoding

📦 Gzip(gzip)

content-length

1662

content-security-policy

default-src 'self'; img-src 'self' data: imgs.xkcd.com; styl...

content-type

text/html; charset=utf-8

date

Mon, 25 May 2026 05:09:38 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx-02.mail-forwarder.io

mx-01.mail-forwarder.io

Domain Information

floating-point-gui.de

Last Updated

31.01.2025

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.

32/100

Not 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.

4 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Helvetica

WCAG AAA

72/100

Readability

/30

19/30

15px · LH 1.33

Hierarchy

/20

15/20

2x ratio

WCAG

/25

24/25

9.4:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Helvetica

Sans30px

Body Font

Helvetica

Sans15px

Contrast Ratio

9.4:1

WCAG AAA (≥7:1)

Reading Comfort

~35 CPL

Narrow lines

30px

24px

15px

⚠️ Small text: 15px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 50/100. Simplify sentences for wider reach.

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 9.4:1).

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

✅ Strong hierarchy: Headlines are 2.0x larger than body text.

Buy on MyFontsFlesch 50

Color Palette

6 unique colors

3.01:1 AA Large Light

#9595a0

Other· 2.7%

#4b494c

Other· 1.5%

#feffed

Primary· 89.5%

#f0f0de

Secondary· 1.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

1 Resources

Scripts

Styles

Async

Defer

Top Script Sources

Website Identity

floating-point-gui.de

Location detected: 🇩🇪 Germanyvia tld

Social Profiles

GitHub

Sponsored

Last analyzed: 25 May 2026 at 05:09

Historical Analysis & Change Tracking