libguestfs.org

https://libguestfs.org· First analyzed 22 May 2026· Updated 22 May 2026

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libguestfs.org

Mobile

Sponsored

Hosting Provider

Hetzner

hetzner.com

IP Address

188.245.161.254

Site Location

🇩🇪 Germanyvia ip

Server Location

🇩🇪 Falkenstein, Germany

ASN

AS24940

Organization

Hetzner

Server

Apache

Nameservers

ns-176-b.gandi.net.ns-205-a.gandi.net.ns-179-c.gandi.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

550 ms10%

Speed Index

715 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

52 KB

15 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Hetzner

Technology Stack

1 Technologies Detected

Web Servers

Apachev2.4.66

SEO Analysis

D54/100

Meta Tags12/15

Content10/12

Headings8/8

Technical6/21

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

libguestfs.orglibguestfs.org

libguestfs, library for accessing and modifying VM disk images

libguestfs, library and tools for accessing and modifying VM disk images

Title Length62 chars

Recommended: 50-60 chars (~370px / 580px)

Description Length72 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (6/6) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Local SEO

Local Search Readiness

8/100

Poor

2 13 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

F37/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

0/25

Citation

3/25

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:44%

Words:718

Token eff.:Optimal

Sections/1K:11.1

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary15w

Descriptive Headingsavg 2.1w

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...

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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.

59/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

14/20

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...

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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.

66/100

A+

5 mg

CO₂e / view

51.9 KB

Page Weight

95%

Cleaner Than

New Visitor

6 mg

Returning (cached)

3 mg

Annual (10K/mo)

624 g

Emission Segments

Data Center

<0.001 g

Network

2 mg

Device

3 mg

Resource Breakdown

Images

35.3 KB

CSS

5.0 KB

HTML

11.6 KB

Green Hosting Verified

Hetzner

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

71%Good

Static / Informational

HTTPS

No WAF

34d

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/1.1

Valid From

28.03.2026

Valid Until

26.06.2026

Subject Alternative Names (4)

builder.libguestfs.orgdownload.libguestfs.orglibguestfs.orgwww.libguestfs.org

SHA-256 Fingerprint

79:85:F1:24:45:C7:36:29:3F:11:1F:F4:36:98:72:C4:B4:46:D0:AF...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

connection

Keep-Alive

content-length

11587

content-type

text/html; charset=UTF-8

date

Fri, 22 May 2026 19:11:55 GMT

etag

"2d43-651ec5dacfb45"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

libguestfs.org

Domain Age

16y 11m

Created

04.06.2009

Expires

04.06.2030

Last Updated

29.05.2025

Registrar

Gandi SAS

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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.

37/100

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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Times New Roman

WCAG Partial

61/100

Readability

/30

15/30

13px · LH --

Hierarchy

/20

13/20

1.72x ratio · ✓ H1→H6

WCAG

/25

19/25

2.8:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Serif22px

Body Font

Times New Roman

Serif13px

Contrast Ratio

2.8:1

1 issue

Reading Comfort

~57 CPL

Optimal (45–75)

22px

13px

19px

13px

Minor Second

Scale

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

✅ Optimal line length: ~57 chars/line (ideal 45–75 CPL).

❌ Very complex text: Flesch score 25/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 2.8:1).

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

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

Buy on MyFontsFlesch 25

Color Palette

7 unique colors

2.19:1 Fail Light

#ffffff

Background· 72.5%

#b3aead

Other· 7.1%

#009df8

Primary· 7.7%

#dde8e6

Secondary· 4.9%

#668aab

Secondary· 2.7%

#60a7cd

Accent· 1%

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Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

feeds.feedburner.com(1)ohloh.net(1)

Website Identity

libguestfs.org

16 years old

rjones AT redhat DOT com

Location detected: 🇩🇪 Germanyvia ip

Gandi SASen

Social Profiles

GitHub

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Last analyzed: 22 May 2026 at 19:12

Historical Analysis & Change Tracking