rara.jp

https://rara.jp· First analyzed 16 May 2026· Updated 16 May 2026

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rara.jp

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

104.21.93.250

Site Location

🇯🇵 Japanvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

pablo.ns.cloudflare.com.lara.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

538 ms10%

Speed Index

699 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

229 KB

16 requests

Image Optimization

Lazy LoadWebP

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Technology Stack

5 Technologies Detected

Analytics

Libraries

Icon Libraries

CDN

SEO Analysis

D58/100

Meta Tags5/15

Content6/12

Headings8/8

Technical15/25

E-E-A-T0/7

Images6/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile1/4

Indexability3/3

rara.jprara.jp

高性能なレンタル掲示板 - Rara 掲示板

圧倒的な機能数が自慢の無料掲示板レンタルサイト。画像のアップロードは勿論のこと、4種類の基本デザインをいつでも切り替えて使えます！

Title Length22 chars

Recommended: 50-60 chars (~136px / 580px)

Description Length65 chars

Recommended: 120-160 chars

Issues (0)

8 issues found

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Crawlability

Sitemap

Type: standard

213 URLs

robots.txt

11 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

F30/100

Bot Access

18/25

Machine Read.

6/25

Schema Data

0/25

Citation

6/25

AI Bot Access

12/14 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:12%

Words:137

Token eff.:Too Short

Sections/1K:14.6

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

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.

80/100

Passed

Critical

Warnings

Images & Alt Text

20/20

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

Semantic Structure

20/20

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

9/15

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.

74/100

A+

23 mg

CO₂e / view

228.6 KB

Page Weight

95%

Cleaner Than

New Visitor

26 mg

Returning (cached)

13 mg

Annual (10K/mo)

2.8 kg

Emission Segments

Data Center

1 mg

Network

7 mg

Device

15 mg

Resource Breakdown

JavaScript

39.8 KB

Images

28.2 KB

CSS

155.1 KB

HTML

5.5 KB

Green Hosting Verified

Cloudflare

GWF Verified

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

41%Poor

Interactive

HTTPS

WAF

75d

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

02.05.2026

Valid Until

31.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

rara.jpfiles.rara.jp

SHA-256 Fingerprint

09:66:0E:FC:17:E2:9A:E3:DF:B9:5D:68:1F:A7:B6:F0:78:C4:D7:B2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

alt-svc

h3=":443"; ma=86400

cf-cache-status

BYPASS

cf-ray🇩🇪 Frankfurt

9fcdc45cfd67dc60-FRA

content-encoding

zstd

content-type

text/html; charset=UTF-8

date

Sat, 16 May 2026 22:19:59 GMT

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

Reject (Strictest)

MX Records (1)

mx.rara.jp

Domain Information

rara.jp

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.

63/100

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,minimum-scale=1.0

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

�q��M�m�p�S Pro W3

WCAG Partial

63/100

Readability

/30

14/30

12px · LH 1.80

Hierarchy

/20

15/20

1.7x ratio · ✓ H1→H6

WCAG

/25

18/25

3.24:1 min contrast

Performance

/25

16/25

1 font

Heading Font

�q��M�m�p�S Pro W3

Sans20px

Body Font

�q��M�m�p�S Pro W3

Sans12px

Contrast Ratio

3.24:1

1 issue

Reading Comfort

Single Font Family

left aligned

20px

32px

16px

Minor Second

Scale

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.2:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

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

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFonts

Color Palette

3 unique colors

Light

#fbfbfb

Background· 87.80000000000003%

#ebeeef

Primary· 7.1%

#a5bfd7

Secondary· 5.2%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

ajax.aspnetcdn.com(1).(1)googletagmanager.com(1)

Website Identity

rara.jp

Location detected: 🇯🇵 Japanvia tld

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Last analyzed: 16 May 2026 at 22:20

Historical Analysis & Change Tracking