openzfs.org

https://openzfs.org· First analyzed 01 Jun 2026· Updated 01 Jun 2026

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openzfs.org

Mobile

Sponsored

Hosting Provider

University of Oregon

IP Address

140.211.9.53

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Corvallis, United States

ASN

AS3701

Organization

University of Oregon

Server

Apache

Nameservers

ns-59-b.gandi.net.ns-30-c.gandi.net.ns-166-a.gandi.net.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

665 ms10%

Speed Index

864 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

335 KB

15 requests

Image Optimization

Lazy LoadResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

University of Oregon

Technology Stack

6 Technologies Detected

Analytics

CSS Frameworks

Payments

Web Servers

Languages

SEO Analysis

D48/100

Meta Tags4/15

Content9/12

Headings6/8

Technical8/21

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

openzfs.orgopenzfs.org

OpenZFS

No description available for this page.

Title Length7 chars

Recommended: 50-60 chars (~46px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

11 issues found

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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

D40/100

Bot Access

20/25

Machine Read.

12/25

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

nav

Text ratio:14%

Words:373

Token eff.:Optimal

Sections/1K:40.2

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary30w

Descriptive Headingsavg 2.2w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

84/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

18/20

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

7/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•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.

63/100

41 mg

CO₂e / view

334.8 KB

Page Weight

90%

Cleaner Than

New Visitor

47 mg

Returning (cached)

24 mg

Annual (10K/mo)

5.0 kg

Emission Segments

Data Center

9 mg

Network

10 mg

Device

22 mg

Resource Breakdown

JavaScript

293.8 KB

Images

25.2 KB

CSS

2.0 KB

HTML

6.2 KB

Other

7.7 KB

Green Hosting Not Verified

University of Oregon

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

83d

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

25.05.2026

Valid Until

23.08.2026

Subject Alternative Names (1)

openzfs.org

SHA-256 Fingerprint

33:88:4D:1B:17:3A:9B:59:B4:40:AB:5B:B6:7E:5C:3F:1E:50:52:F3...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 0s(private, must-revalidate, max-age=0)

content-encoding

📦 Gzip(gzip)

content-language

content-length

6041

content-type

text/html; charset=UTF-8

date

Mon, 01 Jun 2026 07:18:03 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

fb.mail.gandi.net

spool.mail.gandi.net

Domain Information

openzfs.org

Domain Age

13y 5m

Created

11.12.2012

Expires

11.12.2026

Last Updated

17.10.2025

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.

41/100

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.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Linux Libertine + sans-serif

WCAG AA

70/100

Readability

/30

21/30

14px · LH 1.60

Hierarchy

/20

14/20

2.06x ratio

WCAG

/25

21/25

5.59:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Linux Libertine

Sans29px

Body Font

sans-serif

Sans14px

Contrast Ratio

5.59:1

WCAG AA (≥4.5:1)

Reading Comfort

Dual Sans-Serif

left aligned

29px

24px

20px

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.60 ratio (ideal range 1.4–1.6).

❌ Very complex text: Flesch score 24/100. Consider shorter sentences and simpler words.

✅ WCAG AA contrast: All text meets 4.5:1 ratio (min 5.6:1).

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

✅ Strong hierarchy: Headlines are 2.1x larger than body text.

Buy on MyFontsFlesch 24

Color Palette

5 unique colors

3.16:1 AA Large Light

#ffffff

Background· 83.60000000000001%

#899299

Other· 3.6%

#dce1e4

Primary· 3.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

google-analytics.com(1)local(1)

Website Identity

openzfs.org

13 years old

Location detected: 🇺🇸 United Statesvia ip

Gandi SASen

Social Profiles

GitHub

Sponsored

Last analyzed: 01 Jun 2026 at 07:18

Historical Analysis & Change Tracking