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steachs.com

https://steachs.com· First analyzed 22 May 2026· Updated 22 May 2026
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steachs.com
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Mobile

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Hosting Provider

LJ Hosting Co

IP Address

103.1.222.144

Site Location

🇹🇼 Taiwanvia ip

Server Location

🇹🇼 Yingge District, Taiwan

ASN

AS131149

Organization

LJ Hosting Co

Server

Nginx

CDN

Cloudflare

WAF

Cloudflare

Nameservers

tina.ns.cloudflare.com.jay.ns.cloudflare.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
805 ms10%
Speed Index
1.0 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
10.8 MB
58 requests

Image Optimization

Lazy LoadWebPJetpack Photon (WordPress)
0–49
50–89
90–100

Architecture Stack

JAMstack
⚡ SSG
Frontend
Framework
Astro
Infrastructure
Hosting
LJ Hosting Co
CDN
Cloudflare

Technology Stack

11 Technologies Detected

Advertising

4
Google AdsGoogle AdSenseCriteoTaboola

Analytics

2
Google Analytics
Google Analytics 4

Meta Frameworks

1
Astro

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

C68/100
22
3
1
Meta Tags5/15
Content3/12
Headings8/8
Technical23/25
E-E-A-T2/7
Images6/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile3/4
Indexability3/3
S
steachs.comsteachs.com

就是教不落 - 給你最豐富的 3C 資訊、教學網站

分享最新技術、3C 資訊與生活知識的部落格

Title Length25 chars

Recommended: 50-60 chars (~155px / 580px)

Description Length21 chars

Recommended: 120-160 chars

Issues (1)

  • • Very thin content (36 words). Search engines need substantial content for ranking.

4 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

4 URLs

4 sub-sitemaps

robots.txt

8 rules

Sitemap reference found

Local SEO

Local Search Readiness

15/100
Poor
4 13

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

Sponsored

AI & LLM Readiness

D43/100
Bot Access
20/25
Machine Read.
7/25
Schema Data
3/25
Citation
13/25

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:370
Token eff.:Optimal

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary12w
Descriptive Headingsavg 4.7w
Canonical URL
Open Graph3/3
Twitter Card3/3
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.
B
76/100
12
Passed
3
Critical
2
Warnings
Images & Alt Text
20/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
17/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
10/15
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
7/15
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.
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.
29/100
F
1.37 g
CO₂e / view
10.8 MB
Page Weight
5%
Cleaner Than
New Visitor
1.56 g
vs
Returning (cached)
782 mg
Annual (10K/mo)
164.2 kg
Emission Segments
Data Center
306 mg
Network
328 mg
Device
734 mg
Resource Breakdown
JavaScript
394.8 KB
Images
10.3 MB
CSS
3.6 KB
Fonts
6.0 KB
HTML
11.0 KB
Other
86.2 KB
Green Hosting Not Verified
LJ Hosting Co
7 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

66%Fair
Interactive

HTTPS

No WAF

83d

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

15.05.2026

Valid Until

13.08.2026

Subject Alternative Names (2)

steachs.comwww.steachs.com

SHA-256 Fingerprint

19:9F:0B:F7:9A:0D:73:44:5F:DB:27:D0:05:8B:0A:26:49:46:C2:F1...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=86400
cache-control
🔵 Public(public, s-maxage=60, stale-while-revalidate=3600)
content-encoding
⚡ Brotli(br)
content-security-policy-report-only
default-src 'self' https:; script-src 'self' 'unsafe-inline'...
content-type
text/html
date
Fri, 22 May 2026 08:40:16 GMT
Good Warning Issue

Email Infrastructure

Google Workspace

Score

20

SPF
DKIM
DMARC

MX Records (5)

aspmx3.googlemail.com
aspmx.l.google.com
alt2.aspmx.l.google.com
alt1.aspmx.l.google.com

+1 more

Domain Information

steachs.com

Domain Age
17y 1m

Created

17.04.2009

Expires

17.04.2028

Last Updated

19.04.2026

Registrar

GoDaddy.com, LLC

DNSSEC
Not Enabled

Privacy & Compliance

Quantcast Choice

Cookie Consent Banner
Quantcast Choice
Privacy Policy
Terms of Service

GDPR Indicators

Cookie consent banner detected
CMP: Quantcast Choice

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.
C
68/100
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
width=device-width, initial-scale=1.0
1 recommendation
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

Inter

WCAG Partial
74/100
Readability
/30
24/30

17px · LH 1.80

Hierarchy
/20
18/20

2.1x ratio · ✓ H1→H6

WCAG
/25
17/25

2.85:1 min contrast

Performance
/25
15/25

1 font · 3 req

Heading Font

Inter

Sans35px

Body Font

Inter

Sans17px

Contrast Ratio

2.85:1

3 issues

Reading Comfort

~60 CPL

Optimal (45–75)
35px
h1
32px
h2
35px
h3
17px
p
Minor Second
Scale

✅ Excellent readability: 17px body text is ideal for all devices.

✅ Optimal line length: ~60 chars/line (ideal 45–75 CPL).

⚠️ Hard to read: Flesch score 46/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 3 elements below WCAG AA threshold (min 2.9:1).

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

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

GGoogle FontsBuy on MyFontsFlesch 46

Color Palette

4 unique colors
2.03:1 Fail Light
#ffffff
Background· 93.39999999999996%
#b1b7b8
Other· 1.9%
#131719
Primary· 2.9%
#eaf1f3
Primary· 1.9%

Business & Marketing Stack

4 Tools Detected

Advanced

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

Advertising

2
Google AdsEnterprise
TaboolaMid-Market

Ad platforms and retargeting pixels

2

Categories

4

Total Tools

1

Enterprise

1

Mid-Market

Assessment: Well-developed marketing technology stack

Ad Networks

Google AdSenseGoogle Ad Manager

Sponsored

Scripts & Styles

17 Resources

12
Scripts
5
Styles
9
Async
0
Defer

Top Script Sources

fundingchoicesmessages.google.com(4)pagead2.googlesyndication.com(3)gum.criteo.com(1)google-analytics.com(1)cpt.cyntelli.com(1)

Website Identity

就是教不落 - 給你最豐富的 3C 資訊、教學網站

就是教不落 - 給你最豐富的 3C 資訊、教學網站

Organization
17 years old
Location detected: 🇹🇼 Taiwanvia ip
GoDaddy.com, LLC📧 Google Workspacezh-TW

Social Profiles

FacebookInstagram

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Last analyzed: 22 May 2026 at 08:40

Historical Analysis & Change Tracking