umijs.org

https://umijs.org· First analyzed 20 May 2026· Updated 20 May 2026

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umijs.org

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

76.223.126.88

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Seattle, United States

ASN

AS16509

Organization

AWS Global Accelerator (GLOBAL)

Server

Vercel

Nameservers

ns2.vercel-dns.com.ns1.vercel-dns.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

454 ms10%

Speed Index

590 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

647 KB

34 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Platform

Vercel

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Ant Design

Platforms

Vercel

SEO Analysis

D57/100

Meta Tags8/15

Content6/12

Headings3/8

Technical16/25

E-E-A-T0/7

Images4/7

Links5/5

URL5/5

Social3/5

Freshness0/4

Mobile4/4

Indexability3/3

umijs.orgumijs.org

UmiJS - 插件化的企业级前端应用框架

Umi是可扩展的企业级前端应用框架。Umi 以路由为基础的，同时支持配置式路由和约定式路由，保证路由的功能完备，并以此进行功能扩展。然后配以生命周期完善的插件体系，覆盖从源码到构建产物的每个生命周期，支持各种功能扩展和业务需求。

Title Length21 chars

Recommended: 50-60 chars (~130px / 580px)

Description Length114 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

8 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

107 URLs

robots.txt

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

D41/100

Bot Access

20/25

Machine Read.

10/25

Schema Data

0/25

Citation

11/25

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.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

def. listsnav

Text ratio:6%

Words:135

Token eff.:Too Short

Sections/1K:103.7

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary15w

Descriptive Headingsavg 1.1w

Canonical URL

Open Graph3/3

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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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.

59/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

13/20

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

Forms & Inputs

7/15

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

0/15

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.

72/100

65 mg

CO₂e / view

646.9 KB

Page Weight

80%

Cleaner Than

New Visitor

75 mg

Returning (cached)

37 mg

Annual (10K/mo)

7.8 kg

Emission Segments

Data Center

3 mg

Network

19 mg

Device

43 mg

Resource Breakdown

JavaScript

360.6 KB

Images

111.8 KB

CSS

167.9 KB

HTML

6.5 KB

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

2 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

79d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

09.05.2026

Valid Until

07.08.2026

Subject Alternative Names (1)

umijs.org

SHA-256 Fingerprint

BD:A3:4E:C7:2A:BD:FC:5A:BE:9B:CF:2A:83:07:D4:E8:EA:8F:B0:2D...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

access-control-allow-origin

age

394690

cache-control

🟡 0s(public, max-age=0, must-revalidate)

content-disposition

inline

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=utf-8

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

umijs.org

Domain Age

8y 4m

Created

05.01.2018

Expires

05.01.2027

Last Updated

06.01.2026

Registrar

Name.com, Inc.

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.

57/100

Mobile Friendly

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

Times New Roman

WCAG Partial

62/100

Readability

/30

22/30

18px · LH --

Hierarchy

/20

7/20

WCAG

/25

19/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

Times New Roman

Sans

Body Font

Times New Roman

Serif18px

Contrast Ratio

1:1

2 issues

Reading Comfort

Sans Headlines + Serif Body

left aligned

26px

20px

18px

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

✅ Easy to read: Flesch score 72/100 — accessible to general audiences.

⚠️ Partial contrast: 2 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: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 72

Color Palette

5 unique colors

Dark

#000000

Text· 5.7%

#f8f9fb

Primary· 83.40000000000002%

#d7e2ec

Secondary· 5.2%

#a3b9ca

Secondary· 3%

#205a90

Accent· 2.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

2 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(1)

Website Identity

umijs.org

8 years old

Location detected: 🇺🇸 United Statesvia ip

Name.com, Inc.zh

Social Profiles

GitHub

Sponsored

Last analyzed: 20 May 2026 at 00:22

Historical Analysis & Change Tracking