goharbor.io

https://goharbor.io· First analyzed 03 May 2026· Updated 03 May 2026

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goharbor.io

Mobile

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Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

3.33.186.135

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Montreal, Canada

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Netlify

Nameservers

dns3.p02.nsone.net.dns4.p02.nsone.net.dns1.p02.nsone.net.dns2.p02.nsone.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

719 ms10%

Speed Index

935 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

949 KB

60 requests

0–49

50–89

90–100

Architecture Stack

JAMstack

⚡ SSG

Frontend

Framework

Hugov0.74.0

Infrastructure

Platform

Netlify

Technology Stack

7 Technologies Detected

Analytics

Frameworks

CSS Frameworks

Icon Libraries

Tag Managers

Platforms

SEO Analysis

D50/100

Meta Tags7/15

Content7/12

Headings0/8

Technical14/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile2/4

Indexability3/3

goharbor.iogoharbor.io

Harbor

Our mission is to be the trusted cloud native repository for Kubernetes

Title Length6 chars

Recommended: 50-60 chars (~37px / 580px)

Description Length71 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

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Crawlability

Sitemap

Type: standard

1,541 URLs

robots.txt

Local SEO

Local Search Readiness

0/100

Poor

15 2

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

Sponsored

AI & LLM Readiness

F32/100

Bot Access

20/25

Machine Read.

4/25

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

code blocksnav

Text ratio:5%

Words:288

Token eff.:Too Short

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary12w

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

69/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

9/20

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

6/15

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

4 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.

58/100

96 mg

CO₂e / view

949.5 KB

Page Weight

80%

Cleaner Than

New Visitor

110 mg

Returning (cached)

55 mg

Annual (10K/mo)

11.5 kg

Emission Segments

Data Center

5 mg

Network

28 mg

Device

63 mg

Resource Breakdown

JavaScript

113.0 KB

Images

801.4 KB

CSS

28.9 KB

HTML

6.1 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

36%Critical

Interactive

HTTPS

No WAF

53d

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

Valid From

27.03.2026

Valid Until

25.06.2026

Subject Alternative Names (2)

*.goharbor.iogoharbor.io

SHA-256 Fingerprint

EE:FA:FE:FB:1F:B6:4B:ED:78:45:8D:B8:18:20:AF:C6:45:A3:1A:8F...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

age

93175

cache-control

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

cache-status

"Netlify Edge"; hit

content-encoding

⚡ Brotli(br)

content-length

5943

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

goharbor.io

Domain Age

7y 11m

Created

29.05.2018

Expires

29.05.2026

Last Updated

26.11.2025

Registrar

1API GmbH

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.

48/100

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.

Viewport

initial-scale=1,maximum-scale=1,user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

PT Sans + BlinkMacSystemFont

WCAG Partial

66/100

Readability

/30

22/30

16px · LH 1.50

Hierarchy

/20

8/20

WCAG

/25

17/25

2.83:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

PT Sans

Body Font

BlinkMacSystemFont

Sans16px

Contrast Ratio

2.83:1

5 issues

Reading Comfort

~37 CPL

Narrow lines

16px

✅ Excellent readability: 16px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 18/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 5 elements below WCAG AA threshold (min 2.8:1).

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 18

Color Palette

5 unique colors

3.98:1 AA Large Light

#ffffff

Background· 85.69999999999999%

#7c8083

Other· 2.9%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

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Scripts & Styles

10 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(2)cdn.jsdelivr.net(2)local(2)vr.leadsnavi.com(1)buttons.github.io(1)

Website Identity

goharbor.io

7 years old

Location detected: 🇨🇦 Canadavia ip

1API GmbH

Social Profiles

X (Twitter)GitHub

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Last analyzed: 03 May 2026 at 07:48

Historical Analysis & Change Tracking