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bridgestone.com

https://bridgestone.com· First analyzed 23 Apr 2026· Updated 23 Apr 2026
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bridgestone.com
Desktop screenshot of bridgestone.com
Mobile screenshot of bridgestone.com
Mobile

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Hosting Provider

Jpnic NET JP ERX

IP Address

133.208.167.61

Site Location

🇯🇵 Chuo-ku, Japanvia schema_nap

Server Location

🇯🇵 Chiyoda City, Japan

ASN

AS2518

Organization

Jpnic NET JP ERX

CDN

Akamai

WAF

Akamai

Nameservers

ns-369.awsdns-46.com.ns-810.awsdns-37.net.ns-1426.awsdns-50.org.ns-1542.awsdns-00.co.uk.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
534 ms10%
Speed Index
694 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
535 KB
57 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Jpnic NET JP ERX
CDN
Akamai

Technology Stack

8 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Libraries

1
jQueryv1.11.1

Other

1
Modernizr

CSS Frameworks

1
Tailwind CSS

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Customer Support

1
Zendesk

SEO Analysis

C62/100
17
4
2
Meta Tags7/15
Content9/12
Headings3/8
Technical18/21
E-E-A-T2/7
Images1/7
Links5/5
URL5/5
Social5/5
Freshness0/4
Mobile4/4
Indexability3/3
B
bridgestone.combridgestone.com

Bridgestone Global Website

Bridgestone Corporation is the world's largest tire and rubber company. In addition to tires, Bridgestone manufactures diversified products, which include in...

Description truncated.
Title Length27 chars

Recommended: 50-60 chars (~164px / 580px)

Description Length221 chars

Recommended: 120-160 chars

Issues (2)

  • • Missing H1 tag — every page should have exactly one H1
  • • Most images missing alt text (1/1) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Local SEO

Local Search Readiness

24/100
Needs Work
7 15

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AI & LLM Readiness

F37/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
3/25
Citation
12/25

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
data-nosnippet

Machine Readability

llms.txt
llms-full.txt
Semantic HTML
Heading Hierarchy
def. listsnav
Text ratio:4%
Words:288
Token eff.:Too Short
Sections/1K:17.4
Depth:2/5

Structured Data

1 JSON-LD
Organization×1.1
sameAs entity links

Citation Readiness

Opening Summary13w
Descriptive Headingsavg 3.4w
Canonical URL
Open Graph3/3
Twitter Card3/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (10)
AI readiness recommendation preview...
Upgrade to view recommendations

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.
D
58/100
8
Passed
5
Critical
0
Warnings
Images & Alt Text
5/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
11/20
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
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • •Accessibility recommendation preview...
Upgrade to view recommendations

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.
50/100
A
66 mg
CO₂e / view
535.4 KB
Page Weight
80%
Cleaner Than
New Visitor
76 mg
vs
Returning (cached)
38 mg
Annual (10K/mo)
7.9 kg
Emission Segments
Data Center
15 mg
Network
16 mg
Device
36 mg
Resource Breakdown
JavaScript
97.4 KB
Images
27.1 KB
CSS
331.7 KB
HTML
8.5 KB
Other
70.7 KB
Green Hosting Not Verified
Jpnic NET JP ERX
4 recommendations
  • •Carbon footprint recommendation preview...
Upgrade to view recommendations
C

Security Score

61%Fair
Interactive

HTTPS

WAF

232d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

10.12.2025

Valid Until

11.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (5)

www.bridgestone.co.jpbridgestone.co.jpms.bridgestone.co.jptire.bridgestone.co.jpwww.bridgestone.com

SHA-256 Fingerprint

01:04:A6:3A:82:38:6B:FC:4D:B1:67:F9:A7:30:52:1C:3B:B7:6A:D3...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

alt-svc
h3=":443"; ma=93600
cache-control
🟡 0s(max-age=0)
content-encoding
⚡ Brotli(br)
content-length
8356
content-type
text/html
date
Thu, 23 Apr 2026 17:24:46 GMT
Good Warning Issue

Email Infrastructure

Microsoft 365

Score

95

SPF
DKIM
DMARC

DMARC Policy

None (Monitor Only)

MX Records (1)

bridgestone-com.mail.protection.outlook.com

Domain Information

bridgestone.com

Domain Age
29y 10m

Created

11.06.1996

Expires

10.06.2026

Last Updated

21.11.2025

Registrar

1API GmbH

DNSSEC
Not Enabled

Privacy & Compliance

Cookie Consent Banner
Privacy Policy
Terms of Service

GDPR Indicators

Data Protection Officer mentioned

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.
D
55/100
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=1200
3 recommendations
  • •Mobile compatibility recommendation preview...
Upgrade to view recommendations

Typography & Readability

BridgestoneType

WCAG AAA
57/100
Readability
/30
11/30

13px · LH 1.00

Hierarchy
/20
10/20
WCAG
/25
21/25

7.69:1 min contrast

Performance
/25
15/25

1 font · 1 req

Heading Font

BridgestoneType

Sans

Body Font

BridgestoneType

Sans13px

Contrast Ratio

7.69:1

WCAG AAA (≥7:1)

Reading Comfort

~62 CPL

Optimal (45–75)
24px
h2
22px
h3
13px
p

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Tight line spacing (1.00). Increase to 1.4–1.6 for better readability.

✅ Optimal line length: ~62 chars/line (ideal 45–75 CPL).

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 7.7:1).

✅ Lean font stack: 1 font families keeps load times fast.

Buy on MyFontsFlesch 0

Color Palette

5 unique colors
13.94:1 AAA Light
#f7f7f7
Background· 44.400000000000006%
#272727
Other· 7.8%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

2
Google Tag ManagerFree
Google AnalyticsFree

User behavior and product analytics

1

Categories

2

Total Tools

0

Enterprise

0

Mid-Market

Assessment: Growing marketing technology adoption

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Scripts & Styles

29 Resources

20
Scripts
9
Styles
8
Async
0
Defer

Top Script Sources

local(9)googletagmanager.com(2)fast.fonts.net(2)hpjp.mieru-ca.com(1)hm.mieru-ca.com(1)

Website Identity

Bridgestone Corporation

Bridgestone Corporation

Organization

About Bridgestone Corporation:Bridgestone Corporation, headquartered in Tokyo, is the world's largest tire and rubber company. In addition to tires for use in a wide variety of applications, it also manufactures a broad range of diversified products, which include industrial rubber and chemical prod

www.bridgestone.com/
29 years old

1-1, Kyobashi 3-chome, Chuo-ku

104-8340, Chuo-ku, Tokyo

Japan

Location detected: 🇯🇵 Japan, Chuo-kuvia schema_nap
1API GmbH📧 Microsoft 365en

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Last analyzed: 23 Apr 2026 at 17:25

Historical Analysis & Change Tracking