top10.co.jp

https://top10.co.jp· First analyzed 30 Apr 2026· Updated 30 Apr 2026

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top10.co.jp

Mobile

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.

64/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

14/20

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

11/15

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.

22/100

299 mg

CO₂e / view

2.4 MB

Page Weight

30%

Cleaner Than

New Visitor

342 mg

Returning (cached)

171 mg

Annual (10K/mo)

35.9 kg

Emission Segments

Data Center

67 mg

Network

72 mg

Device

161 mg

Resource Breakdown

JavaScript

404.5 KB

Images

1.4 MB

CSS

510.6 KB

Fonts

29.8 KB

HTML

31.0 KB

Other

19.3 KB

Green Hosting Not Verified

XSERVER Inc.

7 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

31d

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

03.03.2026

Valid Until

01.06.2026

Subject Alternative Names (2)

top10.co.jpwww.top10.co.jp

SHA-256 Fingerprint

95:46:4E:73:E3:BF:48:3A:F3:5B:1A:67:16:C8:41:D6:D1:1E:5B:46...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate)

content-encoding

⚡ Brotli(br)

content-type

text/html; charset=UTF-8

date

Thu, 30 Apr 2026 03:41:39 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

link

<https://top10.co.jp/wp-json/>; rel="https://api.w.org/"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (1)

top10.co.jp

Domain Information

top10.co.jp

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.

54/100

Mobile Friendly5 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=1.0, maximum-scale=1.0, minimum-scale=1.0

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Segoe UI + Hiragino Sans

WCAG Partial

49/100

Readability

/30

11/30

14px · LH 4.29

Hierarchy

/20

13/20

1x ratio

WCAG

/25

9/25

1:1 min contrast

Performance

/25

16/25

System fonts

Heading Font

Segoe UI

Sans14px

Body Font

Hiragino Sans

Sans14px

Contrast Ratio

1:1

13 issues

Reading Comfort

Dual Sans-Serif

left aligned

14px

42px

96px

18px

14px

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

⚠️ Wide line spacing (4.29). 1.4–1.6 is optimal for body text.

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 1.0:1).

⚠️ Minor heading issue: 0 level skip(s) detected. Maintain sequential order for screen readers.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle Fonts

Color Palette

12 unique colors

21:1 AAA Light

#ffffff

Background· 73.8%

#000000

Text· 7.6000000000000005%

#42bfef

Primary· 4.2%

#d1d95a

Accent· 4.1%

#0692d8

Accent· 3.2%

#e6f8d1

Accent· 2.2%

#924b5a

Secondary· 2%

#639386

Secondary· 1%

Business & Marketing Stack

3 Tools Detected

Advanced

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Advertising

Google AdsEnterprise

Ad platforms and retargeting pixels

top10.co.jp

Location detected: 🇯🇵 Japanvia tld

Social Profiles

Facebook X (Twitter)YouTube

top10.co.jp

ランキング情報サイトTOP10 | 世界中の全ての情報を、トップテン形式で！

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

top10.co.jp