u2.nu

https://u2.nu· First analyzed 22 May 2026· Updated 22 May 2026

Export

u2.nu

Mobile

Sponsored

Hosting Provider

Oracle Cloud

oracle.com/cloud

IP Address

129.150.59.5

Site Location

🇸🇬 Singaporevia ip

Server Location

🇸🇬 Singapore, Singapore

ASN

AS31898

Organization

Oracle Corporation

CDN

Cloudflare

WAF

Cloudflare

Nameservers

arch.ns.cloudflare.com.jean.ns.cloudflare.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

2.2 s10%

Speed Index

2.8 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

1.4 MB

10 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

🖥️ CSR

Infrastructure

Hosting

Oracle Cloud

CDN

Cloudflare

SEO Analysis

F35/100

Meta Tags9/15

Content0/12

Headings0/8

Technical11/21

E-E-A-T3/7

Images0/7

Links0/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

u2.nuu2.nu

U2.NU

URL Shortener written in Golang using Bolt DB. Provides features such as Deletion, Expiration, OAuth and is of course Dockerizable

Title Length5 chars

Recommended: 50-60 chars (~28px / 580px)

Description Length130 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (12 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

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

F30/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

4/25

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

Text ratio:3%

Words:11

Token eff.:Too Short

Structured Data

No Schema

Citation Readiness

Opening Summary

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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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.

66/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

6/20

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

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.

2 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.

41/100

181 mg

CO₂e / view

1.4 MB

Page Weight

60%

Cleaner Than

New Visitor

207 mg

Returning (cached)

104 mg

Annual (10K/mo)

21.7 kg

Emission Segments

Data Center

41 mg

Network

44 mg

Device

97 mg

Resource Breakdown

JavaScript

776.5 KB

CSS

685.4 KB

HTML

2.5 KB

Other

709 B

Green Hosting Not Verified

Oracle Cloud

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

76%Good

Static / Informational

HTTPS

No WAF

62d

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

Valid From

25.04.2026

Valid Until

24.07.2026

Subject Alternative Names (1)

u2.nu

SHA-256 Fingerprint

18:C8:9D:51:2A:0E:C7:A8:E6:0E:47:5C:6D:04:1E:80:2F:B4:0A:2D...

Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

accept-ranges

bytes

content-length

2281

content-type

text/html; charset=utf-8

date

Fri, 22 May 2026 13:59:42 GMT

last-modified

Fri, 22 May 2026 13:59:42 GMT

strict-transport-security

max-age=31536000; includeSubDomains

Good Warning Issue

Email Infrastructure

Zoho Mail

Score

SPF

DKIM

DMARC

MX Records (2)

mx2.zoho.com

mx.zoho.com

Domain Information

u2.nu

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.

60/100

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,shrink-to-fit=no

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Lato + Helvetica Neue

WCAG AAA

72/100

Readability

/30

21/30

14px · LH 1.43

Hierarchy

/20

8/20

WCAG

/25

24/25

21:1 min contrast

Performance

/25

19/25

System fonts

Heading Font

Lato

Body Font

Helvetica Neue

Sans14px

Contrast Ratio

21:1

WCAG AAA (≥7:1)

Reading Comfort

~43 CPL

Narrow lines

14px

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

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 21.0:1).

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

Color Palette

8 unique colors

15.13:1 AAA Dark

#262626

Other· 87.89999999999999%

#ffffff

Text· 9.4%

#000000

Primary· 0%

#db4d3a

Primary· 0.5%

#a28f8c

Secondary· 0.4%

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Scripts & Styles

4 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(2)

Website Identity

u2.nu

Location detected: 🇸🇬 Singaporevia ip

📧 Zoho Mailen

Sponsored

Last analyzed: 22 May 2026 at 14:00

Historical Analysis & Change Tracking