3u.com

https://3u.com· First analyzed 08 May 2026· Updated 08 May 2026

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3u.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

43.109.101.4

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS24429

Organization

Alibaba.com LLC

Server

Nginx

Performance

Core Web Vitals

Weight

First Contentful Paint

1.0 s10%

Speed Index

1.4 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

398 KB

53 requests

Image Optimization

WebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

7 Technologies Detected

CSS Frameworks

Analytics

Libraries

UI Components

Web Servers

SEO Analysis

D55/100

Meta Tags15/15

Content11/12

Headings0/8

Technical16/25

E-E-A-T0/7

Images2/7

Links2/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

3u.com3u.com

3uTools – All-in-One iOS Device Management & Flash Tool

3uTools is an all-in-one iOS management tool offering app downloads, data backup, flashing, device info, and system maintenance for iPhone and iPad users.

Title Length55 chars

Recommended: 50-60 chars (~334px / 580px)

Description Length154 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (44/68) — critical for accessibility and SEO

9 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

2 URLs

2 sub-sitemaps

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

F34/100

Bot Access

20/25

Machine Read.

8/25

Schema Data

0/25

Citation

6/25

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:11%

Words:1,032

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary10w

Descriptive Headings

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...

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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.

57/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

6/20

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

9/15

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

4 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.

49/100

49 mg

CO₂e / view

398.2 KB

Page Weight

90%

Cleaner Than

New Visitor

56 mg

Returning (cached)

28 mg

Annual (10K/mo)

5.9 kg

Emission Segments

Data Center

11 mg

Network

12 mg

Device

26 mg

Resource Breakdown

JavaScript

75.3 KB

Images

64.4 KB

CSS

247.3 KB

HTML

11.0 KB

Other

300 B

Green Hosting Not Verified

Alibaba Cloud

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

24%Critical

Interactive

HTTPS

No WAF

95d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.07.2025

Valid Until

11.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.3u.com3u.com

SHA-256 Fingerprint

2B:67:EA:5C:55:9D:92:18:4A:33:81:52:35:04:52:B5:58:B4:FC:BB...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-language

zh-CN

content-type

text/html;charset=utf-8

cross-origin-embedder-policy-report-only

require-corp

cross-origin-opener-policy

same-origin

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

3u.com

Domain Age

30y 1m

Created

22.03.1996

Expires

23.03.2032

Last Updated

16.02.2023

Registrar

eName Technology Co., Ltd.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

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=1.0

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

Segoe UI

WCAG Partial

63/100

Readability

/30

16/30

14px · LH 1.36

Hierarchy

/20

10/20

WCAG

/25

17/25

1.92:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

Segoe UI

Body Font

Segoe UI

Sans14px

Contrast Ratio

1.92:1

16 issues

Reading Comfort

~32 CPL

Narrow lines

14px

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

⚠️ Tight line spacing (1.36). Increase to 1.4–1.6 for better readability.

⚠️ Hard to read: Flesch score 47/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 16 elements below WCAG AA threshold (min 1.9:1).

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 47

Color Palette

3 unique colors

Light

#e9f6ff

Primary· 93.99999999999997%

#98a6cd

Secondary· 5.7%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

3u.com(3)googletagmanager.com(2)google-analytics.com(1)

Website Identity

3u.com

30 years old

Location detected: 🇫🇮 Finlandvia ip

eName Technology Co., Ltd.en

Social Profiles

Facebook X (Twitter)

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Last analyzed: 08 May 2026 at 10:17

Historical Analysis & Change Tracking