pediy.com

https://pediy.com· First analyzed 03 May 2026· Updated 03 May 2026

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pediy.com

Mobile

Sponsored

Hosting Provider

Chinanet HE

IP Address

124.238.251.179

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shijiazhuang, China

ASN

AS58539

Organization

Chinanet HE

CDN

Nameservers

ns1.cyudun.net.ns2.cyudun.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.7 s10%

Speed Index

3.5 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

5.4 MB

107 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Frontend

Styling

Tailwind CSS

Infrastructure

Hosting

Chinanet HE

CDN

Technology Stack

8 Technologies Detected

Libraries

CSS Frameworks

Analytics

UI Components

Icon Libraries

SEO Analysis

D49/100

Meta Tags5/15

Content6/12

Headings3/8

Technical15/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social2/5

Freshness0/4

Mobile1/4

Indexability3/3

pediy.compediy.com

看雪学苑｜专业信息安全学习平台

看雪学苑｜软件与系统安全、逆向工程与漏洞研究的专业学习平台

Title Length15 chars

Recommended: 50-60 chars (~93px / 580px)

Description Length29 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (54/98) — critical for accessibility and SEO

15 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

143 URLs

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

F35/100

Bot Access

20/25

Machine Read.

7/25

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

Text ratio:1%

Words:635

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph2/3

Twitter Card0/3

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.

58/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

11/20

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

12/15

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

4/15

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

5 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.

9/100

686 mg

CO₂e / view

5.4 MB

Page Weight

Cleaner Than

New Visitor

784 mg

Returning (cached)

392 mg

Annual (10K/mo)

82.3 kg

Emission Segments

Data Center

153 mg

Network

165 mg

Device

368 mg

Resource Breakdown

JavaScript

506.3 KB

Images

4.7 MB

CSS

155.5 KB

HTML

36.1 KB

Green Hosting Not Verified

Chinanet HE

9 recommendations

•Carbon footprint recommendation preview...

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Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

181d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

TrustAsia Technologies, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.10.2025

Valid Until

31.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.kanxue.comkanxue.com

SHA-256 Fingerprint

E4:C1:49:0E:FD:E1:F8:83:11:00:32:E0:25:14:01:10:56:F7:FA:90...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Sun, 03 May 2026 08:53:29 GMT

transfer-encoding

chunked

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

mxbiz2.qq.com

Domain Information

pediy.com

Domain Age

24y 7m

Created

17.09.2001

Expires

17.09.2029

Last Updated

31.03.2025

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

72/100

Mobile Friendly11 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

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

PingFang SC

WCAG Partial

57/100

Readability

/30

15/30

12px · LH 1.50

Hierarchy

/20

11/20

1.5x ratio

WCAG

/25

16/25

1:1 min contrast

Performance

/25

15/25

2 fonts · 1 req

Heading Font

PingFang SC

Sans18px

Body Font

PingFang SC

Sans12px

Contrast Ratio

1:1

30 issues

Reading Comfort

Single Font Family

left aligned

18px

17px

18px

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

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

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

⚠️ Partial contrast: 30 elements below WCAG AA threshold (min 1.0:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

Buy on MyFontsFlesch 36

Color Palette

8 unique colors

Light

#ffffff

Background· 59%

#f87c36

Primary· 17.1%

#fa631c

Accent· 7.8%

#8cb3c4

Secondary· 6.1%

#faa571

Accent· 2.3%

#bb624a

Secondary· 1.1%

#d87c53

Accent· 0.3%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

kanxue.com(11)local(4)cstaticdun.126.net(2)hm.baidu.com(1)chat.kanxue.com(1)

Website Identity

pediy.com

24 years old

Location detected: 🇨🇳 Chinavia ip

eName Technology Co., Ltd.en

Sponsored

Last analyzed: 03 May 2026 at 08:54

Historical Analysis & Change Tracking