sumida.com

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

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sumida.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.178.220

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

elliot.ns.cloudflare.com.lia.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

398 ms10%

Speed Index

517 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

15 KB

45 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

6 Technologies Detected

Analytics

Libraries

CSS Frameworks

Tag Managers

CDN

SEO Analysis

D45/100

Meta Tags7/15

Content9/12

Headings5/8

Technical9/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

sumida.comsumida.com

SUMIDA CORPORATION

Welcome to SUMIDA CORPORATION, a leading global manufacturer of inductive components and modules such as Power Inductors, Power Transformers, EMC Coils, Sens...

Description truncated.

Title Length18 chars

Recommended: 50-60 chars (~118px / 580px)

Description Length277 chars

Recommended: 120-160 chars

Issues (2)

• Most images missing alt text (11/12) — critical for accessibility and SEO
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

15 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

32 rules

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F36/100

Bot Access

15/25

Machine Read.

11/25

Schema Data

0/25

Citation

10/25

AI Bot Access

6/14 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

navheader/footer

Text ratio:7%

Words:332

Token eff.:Optimal

Sections/1K:12

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary180w

Descriptive Headingsavg 15.8w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (9)

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.

67/100

Passed

Critical

Warnings

Images & Alt Text

5/20

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

Semantic Structure

15/20

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

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

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.

59/100

A+

2 mg

CO₂e / view

14.9 KB

Page Weight

95%

Cleaner Than

New Visitor

2 mg

Returning (cached)

<0.001 g

Annual (10K/mo)

180 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

1 mg

Resource Breakdown

HTML

6.6 KB

Other

8.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

86%Very Good

Interactive

HTTPS

WAF

59d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

15.04.2026

Valid Until

14.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

sumida.com*.sumida.com

SHA-256 Fingerprint

17:06:6C:32:56:09:04:AD:2A:56:27:B0:26:40:6E:12:97:E6:51:CC...

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HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cf-cache-status

DYNAMIC

cf-ray🇺🇸 Washington DC

9fc52db71c0f20d1-IAD

content-encoding

zstd

content-security-policy

upgrade-insecure-requests; default-src 'none' ; ...

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mailgate01.hk.sumida.com

Domain Information

sumida.com

Domain Age

29y 1m

Created

02.04.1997

Expires

03.04.2036

Last Updated

04.04.2026

Registrar

Network Solutions, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

38/100

Not 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.

3 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

arial bold + droid_sansregular

WCAG Partial

54/100

Readability

/30

18/30

14px · LH 1.50

Hierarchy

/20

12/20

3.64x ratio

WCAG

/25

13/25

1.08:1 min contrast

Performance

/25

11/25

System fonts

Heading Font

arial bold

Sans51px

Body Font

droid_sansregular

Sans14px

Contrast Ratio

1.08:1

22 issues

Reading Comfort

~81 CPL

Wide lines

51px

23px

14px

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

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

⚠️ Wide lines: ~81 chars/line. Use max-width: 65ch for comfortable reading.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 22 elements below WCAG AA threshold (min 1.1:1).

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

Buy on MyFontsFlesch 0

Color Palette

5 unique colors

10.3:1 AAA Light

#ffffff

Background· 76.3%

#40413c

Other· 6.8%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

google.com(2)googletagmanager.com(2)local(2)cse.google.com(1)cdn.leadinfo.net(1)

Website Identity

sumida.com

29 years old

Location detected: 🇨🇦 Canadavia ip

Network Solutions, LLCen

Social Profiles

Facebook X (Twitter)LinkedIn YouTube

Sponsored

Last analyzed: 15 May 2026 at 21:19

Historical Analysis & Change Tracking