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zwoastro.com

https://zwoastro.com· First analyzed 29 May 2026· Updated 29 May 2026
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zwoastro.com
Desktop screenshot of zwoastro.com
Mobile screenshot of zwoastro.com
Mobile

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Hosting Provider

Tencent Cloud
cloud.tencent.com

IP Address

49.51.72.174

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Santa Clara, United States

ASN

AS132203

Organization

Tencent cloud computing (Beijing) Co., Ltd.

Server

Nginx

Nameservers

susie.dnspod.net.run.dnspod.net.

Performance

83

Core Web Vitals

Weight

First Contentful Paint
2.0 s10%
Speed Index
2.5 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
2.4 MB
246 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPressv6.9.4
cms
Qweryv3.4.1Custom
by AncoraThemes
View Theme

Technology Stack

44 Technologies Detected

Plugins

20
Mailchimp For Woocommerce
Trx_Addons
Woocommerce Product Price Based On Countries
Header Footer Elementor
Contact Form 7
Menu Image
WooCommerce
Zwo User Sync
Elementor
Elementor
Woo Smart Quick ViewSolid_AffiliateFlexible ShippingAirwallex Online Payments Gateway
Elementor
Woocommerce Paypal Payments
Woocommerce Google Analytics Integration
Google Site KitWp Consent Api
Yoast SEO

Analytics

5
Google Analytics
Google Analytics 4
Facebook PixelMicrosoft ClarityPostHog

Libraries

3
jQueryv3.7.1
jQuery UI
Underscore.js

Fonts

3
Google FontsAdobe Fonts (Typekit)Adobe Fonts

Other

2
GSAPv3.12.2Lottie

UI Components

2
SwiperSlick Carousel

Advertising

2
Google AdsGoogle AdSense

Frameworks

1
Vue.js

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Tag Managers

1
Google Tag Manager

Email Marketing

1
Mailchimp

Web Servers

1
Nginxv1.18.0

Security

1
reCAPTCHA

SEO Analysis

B76/100
22
9
1
Meta Tags12/15
Content8/12
Headings5/8
Technical24/25
E-E-A-T2/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness4/4
Mobile1/4
Indexability3/3
Z
zwoastro.comzwoastro.com

Home - ZWO Official Store | Make Astrophotography Easy and Fun

ZWO is a world-renowned high-tech R&D company focused on the development, design, production and sales of astrophotography equipment. lt is also an innovativ...

Description truncated.
Title Length62 chars

Recommended: 50-60 chars (~389px / 580px)

Description Length422 chars

Recommended: 120-160 chars

Issues (1)

  • • Most images missing alt text (18/25) — critical for accessibility and SEO

10 issues found

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Crawlability

Sitemap

Type: index

12 URLs

12 sub-sitemaps

robots.txt

13 rules

Sitemap reference found

Local SEO

Local Search Readiness

20/100
Needs Work
6 11

Sponsored

AI & LLM Readiness

D52/100
Bot Access
20/25
Machine Read.
9/25
Schema Data
8/25
Citation
15/25

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
Text ratio:1%
Words:554
Token eff.:Optimal

Structured Data

5 JSON-LD
Organization×1.1WebSiteBreadcrumbListSearchAction
sameAs entity links

Citation Readiness

Opening Summary10w
Descriptive Headingsavg 3.2w
Canonical URL
Open Graph3/3
Twitter Card1/3
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.
A
88/100
15
Passed
4
Critical
0
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
15/20
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
11/15
Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
ARIA & Roles
12/15
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.
26/100
E
300 mg
CO₂e / view
2.4 MB
Page Weight
30%
Cleaner Than
New Visitor
343 mg
vs
Returning (cached)
172 mg
Annual (10K/mo)
36.0 kg
Emission Segments
Data Center
67 mg
Network
72 mg
Device
161 mg
Resource Breakdown
JavaScript
400.3 KB
Images
137.3 KB
CSS
1.8 MB
Fonts
2.2 KB
HTML
44.1 KB
Other
22.5 KB
Green Hosting Not Verified
Tencent Cloud
5 recommendations
  • •Carbon footprint recommendation preview...
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F

Security Score

21%Critical
Interactive

HTTPS

No WAF

140d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DNSPod, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

01.04.2026

Valid Until

16.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.zwoastro.comzwoastro.com

SHA-256 Fingerprint

61:22:A2:2F:16:38:F9:23:31:DC:52:D2:70:76:A6:E8:1C:45:6F:7F...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

content-encoding
📦 Gzip(gzip)
content-type
text/html; charset=UTF-8
date
Fri, 29 May 2026 03:44:53 GMT
etag
"86f0a4959c9bde097d556adeeae125af"
last-modified
Fri, 29 May 2026 03:44:53 GMT
server
nginx/1.18.0 (Ubuntu)
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

75

SPF
DKIM
DMARC

DMARC Policy

Reject (Strictest)

MX Records (3)

mx2.feishu.cn
mx3.feishu.cn
mx1.feishu.cn

Domain Information

zwoastro.com

Domain Age
4y 4m

Created

27.01.2022

Expires

27.01.2029

Last Updated

07.11.2025

Registrar

DNSPod, Inc.

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Privacy policy page linked
Data Protection Officer mentioned

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.
A
86/100
Mobile Friendly14 breakpoints
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
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

sofia-pro + europa

WCAG Partial
71/100
Readability
/30
21/30

16px · LH 1.82

Hierarchy
/20
12/20

3.56x ratio

WCAG
/25
18/25

1:1 min contrast

Performance
/25
20/25

2 fonts · 1 req

Heading Font

sofia-pro

Sans57px

Body Font

europa

Sans16px

Contrast Ratio

1:1

24 issues

Reading Comfort

~45 CPL

Optimal (45–75)
57px
h1
47px
h2
16px
p

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

⚠️ Wide line spacing (1.82). 1.4–1.6 is optimal for body text.

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

⚠️ Hard to read: Flesch score 36/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 24 elements below WCAG AA threshold (min 1.0:1).

❌ Broken heading hierarchy: 2 level skip(s). Screen readers rely on sequential headings (h1→h2→h3).

GGoogle FontsAAdobe FontsBuy on MyFontsFluid Type (rem)Flesch 37

Color Palette

13 unique colors
Light
#ffffff
Background· 22.5%
#090302
Primary· 13%
#d46d48
Accent· 9.7%
#c94b33
Accent· 7.4%
#2a0e0b
Accent· 6.6%
#ce865d
Accent· 6.4%
#7f342a
Secondary· 6.3%
#c13026
Accent· 6.1%

Business & Marketing Stack

6 Tools Detected

Enterprise

Marketing Automation

1
MailchimpSMB

Email marketing and automation platforms

Behavior Analytics

3
Google Tag ManagerFree
Google AnalyticsFree
Microsoft ClarityFree

User behavior and product analytics

Advertising

2
Google AdsEnterprise
Facebook PixelMid-Market

Ad platforms and retargeting pixels

3

Categories

6

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Sophisticated marketing and sales technology infrastructure

Ad Networks

Google AdSense

Sponsored

Scripts & Styles

30 Resources

20
Scripts
10
Styles
13
Async
1
Defer

Top Script Sources

googletagmanager.com(5)w.zwoastro.com(3)youtube.com(2)pagead2.googlesyndication.com(2)connect.facebook.net(2)

Website Identity

Discovery Astrophotography with ZWO ASTRO

Discovery Astrophotography with ZWO ASTRO

Organization

ZWO is a world-renowned high-tech R&D company focused on the development, design, production and sales of astrophotography equipment. lt is also an innovative technology enterprise dedicated to the construction of the astrophotography ecosystem. Conforming to the growing trend of loT, ZWO realizes w

[email protected]
store.zwoastro.com/
4 years old
Location detected: 🇺🇸 United Statesvia ip
DNSPod, Inc.en-US

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Last analyzed: 29 May 2026 at 03:45

Historical Analysis & Change Tracking