zlyum.com

https://zlyum.com· First analyzed 05 May 2026· Updated 05 May 2026

Export

zlyum.com

Mobile

Sponsored

Hosting Provider

Tencent Cloud

cloud.tencent.com

IP Address

43.134.4.12

Site Location

🇸🇬 Singaporevia ip

Server Location

🇸🇬 Singapore, Singapore

ASN

AS132203

Organization

Tencent Cloud Computing

Server

OpenResty

CDN

Cloudflare

WAF

Cloudflare

Nameservers

rodney.ns.cloudflare.com.veda.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.1 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

585 KB

28 requests

Image Optimization

Responsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

WordPressv6.9.4

cms

Twenty Twenty-Fivev1.0

by the WordPress team

View Theme

Technology Stack

7 Technologies Detected

Plugins

Code Block Pro Wp Dark Mode Code Syntax Block

CSS Frameworks

Web Servers

Languages

SEO Analysis

D57/100

Meta Tags4/15

Content10/12

Headings8/8

Technical15/25

E-E-A-T0/7

Images2/7

Links4/5

URL5/5

Social0/5

Freshness2/4

Mobile4/4

Indexability3/3

zlyum.comzlyum.com

子龙的开发博客 – keep push

No description available for this page.

Title Length19 chars

Recommended: 50-60 chars (~117px / 580px)

Description Length0 chars

Recommended: 120-160 chars

Issues (2)

• Missing meta description — important for click-through rates in SERPs
• Most images missing alt text (11/12) — critical for accessibility and SEO

11 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

5 URLs

5 sub-sitemaps

robots.txt

4 rules

Sitemap reference found

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

F36/100

Bot Access

20/25

Machine Read.

7/25

Schema Data

0/25

Citation

9/25

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:3%

Words:582

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary58w

Descriptive Headingsavg 1.3w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

87/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

6/15

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

1 recommendation

•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.

54/100

72 mg

CO₂e / view

584.6 KB

Page Weight

80%

Cleaner Than

New Visitor

83 mg

Returning (cached)

41 mg

Annual (10K/mo)

8.7 kg

Emission Segments

Data Center

16 mg

Network

17 mg

Device

39 mg

Resource Breakdown

JavaScript

95.8 KB

CSS

437.3 KB

HTML

51.5 KB

Green Hosting Not Verified

Tencent Cloud

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

76%Good

Static / Informational

HTTPS

No WAF

77d

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

22.04.2026

Valid Until

21.07.2026

Subject Alternative Names (2)

www.zlyum.comzlyum.com

SHA-256 Fingerprint

9E:FD:5B:11:44:27:23:EA:E4:41:CC:4B:FC:9C:95:F6:30:7F:DA:5D...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

52467

content-type

text/html; charset=UTF-8

date

Tue, 05 May 2026 04:33:34 GMT

link

<https://zlyum.com/wp-json/>; rel="https://api.w.org/"

server

openresty

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

zlyum.com

Domain Age

5y 3m

Created

04.02.2021

Expires

04.02.2027

Last Updated

20.01.2026

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

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.

72/100

Mobile Friendly6 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

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Vollkorn + Fira Code

WCAG Partial

76/100

Readability

/30

22/30

18px · LH 1.50

Hierarchy

/20

18/20

2.67x ratio · ✓ H1→H6

WCAG

/25

16/25

1.62:1 min contrast

Performance

/25

20/25

2 fonts · 3 req

Heading Font

Vollkorn

Serif48px

Body Font

Fira Code

Mono18px

Contrast Ratio

1.62:1

33 issues

Reading Comfort

~36 CPL

Narrow lines

48px

38px

32px

18px

✅ Excellent readability: 18px body text is ideal for all devices.

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

❌ Very complex text: Flesch score 9/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 33 elements below WCAG AA threshold (min 1.6:1).

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

✅ Strong hierarchy: Headlines are 2.7x larger than body text.

Buy on MyFontsFluid Type (rem)Flesch 9

Color Palette

5 unique colors

15.11:1 AAA Dark

#1b1b1b

Text· 76.09999999999998%

#f0f0f0

Background· 16.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

9 Resources

Scripts

Styles

Async

Defer

Top Script Sources

zlyum.com(5)

Website Identity

zlyum.com

5 years old

Location detected: 🇸🇬 Singaporevia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.zh-Hans

Social Profiles

X (Twitter)

Sponsored

Last analyzed: 05 May 2026 at 04:33

Historical Analysis & Change Tracking