ic37.com

https://ic37.com· First analyzed 15 May 2026· Updated 15 May 2026

Export

ic37.com

Mobile

Sponsored

Hosting Provider

Guangdong Network of ChinaTelecom

IP Address

121.12.119.8

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Chang’an, China

ASN

AS134763

Server

Nginx

Nameservers

dns7.hichina.com.dns8.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.8 s10%

Speed Index

2.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

373 KB

97 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Guangdong Network of ChinaTelecom

Technology Stack

9 Technologies Detected

Libraries

jQueryv3.5.1

Animate.css

Advertising

Google Ads Google AdSense

CSS Frameworks

Icon Libraries

Analytics

Web Servers

Customer Support

SEO Analysis

D53/100

Meta Tags10/15

Content11/12

Headings3/8

Technical11/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

ic37.comic37.com

电子元器件-IC 电子元器件供求信息-芯三七-中国IC网-交易网--PDF资料-IC技术资料

ic37.com专业IC交易平台,电子元器件网,并免费提供海量的电子元器件,IC型号Datasheet资料文件下载,中国IC网,芯三七

Title Length46 chars

Recommended: 50-60 chars (~278px / 580px)

Description Length67 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (35/50) — critical for accessibility and SEO

13 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

16 rules

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

F16/100

Bot Access

3/25

Machine Read.

8/25

Schema Data

0/25

Citation

5/25

AI Bot Access

0/14 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

nav

Text ratio:5%

Words:882

Token eff.:Optimal

Sections/1K:29.5

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.4w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

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.

41/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

8/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

3/15

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

1/15

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

5 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.

46/100

46 mg

CO₂e / view

373.1 KB

Page Weight

90%

Cleaner Than

New Visitor

53 mg

Returning (cached)

26 mg

Annual (10K/mo)

5.5 kg

Emission Segments

Data Center

10 mg

Network

11 mg

Device

25 mg

Resource Breakdown

JavaScript

157.8 KB

Images

178.4 KB

HTML

19.3 KB

Other

17.7 KB

Green Hosting Not Verified

Guangdong Network of ChinaTelecom

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

0%Critical

Critical / Transactional

HTTPS

No WAF

138d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Sectigo Limited

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

16.03.2026

Valid Until

30.09.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.ic37.comic37.com

SHA-256 Fingerprint

D0:48:96:A1:2D:A4:7A:82:D7:6C:10:B6:3D:47:22:0B:F0:20:38:AE...

Top Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Fri, 15 May 2026 10:08:12 GMT

etag

W/"6a06efdd-1538d"

last-modified

Fri, 15 May 2026 10:05:17 GMT

server

nginx

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

smtp.ic37.com

Domain Information

ic37.com

Domain Age

23y 8m

Created

18.09.2002

Expires

09.04.2027

Last Updated

25.01.2026

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Cookie consent banner detected

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.

56/100

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

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Microsoft YaHei

WCAG Partial

53/100

Readability

/30

15/30

12px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

17/25

2.85:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Microsoft YaHei

Sans

Body Font

Microsoft YaHei

Sans12px

Contrast Ratio

2.85:1

4 issues

Reading Comfort

Single Font Family

left aligned

14px

12px

Minor Second

Scale

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

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

✅ Easy to read: Flesch score 74/100 — accessible to general audiences.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.9:1).

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

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 74

Color Palette

9 unique colors

2.02:1 Fail Light

#ffffff

Background· 47%

#adb9b9

Secondary· 6.9%

#040f15

Primary· 10.5%

#d5d3e4

Secondary· 6%

#997a75

Secondary· 5.6%

#20517c

Accent· 5%

#531719

Accent· 3.4%

#e9e3dc

Secondary· 1.3%

Business & Marketing Stack

2 Tools Detected

Advanced

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

Sponsored

Scripts & Styles

26 Resources

Scripts

Styles

Async

Defer

Top Script Sources

pagead2.googlesyndication.com(8)public.ic37.com(5)ep2.adtrafficquality.google(4)googletagservices.com(2)ad.doubleclick.net(1)

Website Identity

ic37.com

23 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.

Sponsored

Last analyzed: 15 May 2026 at 10:08

Historical Analysis & Change Tracking