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rfj.ch

https://rfj.ch· First analyzed 13 May 2026· Updated 13 May 2026
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rfj.ch
Desktop screenshot of rfj.ch
Mobile screenshot of rfj.ch
Mobile

Sponsored

Hosting Provider

Image et Son SA

IP Address

84.16.71.133

Site Location

🇨🇭 Switzerlandvia tld

Server Location

🇨🇭 Rossemaison, Switzerland

ASN

AS29222

Organization

Image et Son SA

CDN

Cloudflare

WAF

Cloudflare

Nameservers

elliott.ns.cloudflare.com.sharon.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
432 ms10%
Speed Index
562 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
749 KB
51 requests

Image Optimization

Lazy Load
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Image et Son SA
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

6 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

CSS Frameworks

1
Tailwind CSS

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Customer Support

1
Zendesk

SEO Analysis

A80/100
22
5
0
Meta Tags15/15
Content11/12
Headings8/8
Technical19/25
E-E-A-T3/7
Images3/7
Links5/5
URL5/5
Social4/5
Freshness0/4
Mobile4/4
Indexability3/3
R
rfj.chrfj.ch

RFJ votre radio régionale - RFJ votre radio régionale

RFJ propose toute l’actualité du canton du Jura, des services de proximité et une programmation pop/rock pour vous accompagner au quotidien.

Title Length53 chars

Recommended: 50-60 chars (~315px / 580px)

Description Length140 chars

Recommended: 120-160 chars

Issues (0)

    5 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: standard

    1,000 URLs

    robots.txt

    232 rules

    Sitemap reference found

    Local SEO

    Local Search Readiness

    15/100
    Poor
    4 11 2

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

    Sponsored

    AI & LLM Readiness

    D45/100
    Bot Access
    18/25
    Machine Read.
    11/25
    Schema Data
    0/25
    Citation
    16/25

    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
    nav
    Text ratio:8%
    Words:2,180
    Token eff.:Optimal
    Sections/1K:22
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary11w
    Descriptive Headingsavg 4.6w
    Canonical URL
    Open Graph2/3
    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.
    C
    65/100
    10
    Passed
    5
    Critical
    3
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    17/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    8/15
    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
    5/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    5/15
    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.
    61/100
    A
    76 mg
    CO₂e / view
    748.6 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    86 mg
    vs
    Returning (cached)
    43 mg
    Annual (10K/mo)
    9.1 kg
    Emission Segments
    Data Center
    4 mg
    Network
    22 mg
    Device
    50 mg
    Resource Breakdown
    JavaScript
    500.6 KB
    Images
    48.0 KB
    CSS
    73.4 KB
    Fonts
    2.2 KB
    HTML
    30.8 KB
    Other
    93.6 KB
    Green Hosting Verified
    Infomaniak
    GWF Verified
    5 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    58d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (3072 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.2

    HTTP Protocol

    HTTP/1.1

    Valid From

    11.04.2026

    Valid Until

    10.07.2026

    Subject Alternative Names (7)

    rfj.chrjb.chrtn.chww6.rfj.chwww.rfj.chwww.rjb.chwww.rtn.ch

    SHA-256 Fingerprint

    0C:3A:35:91:86:66:00:7F:E1:CB:EF:DE:88:9A:DD:29:AB:9C:01:66...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    access-control-allow-origin
    *
    cache-control
    🟣 Private(private)
    content-encoding
    📦 Gzip(gzip)
    content-length
    31237
    content-type
    text/html; charset=utf-8
    date
    Wed, 13 May 2026 06:05:03 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    98

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (3)

    mx140.zline.ch
    mx3.zline.ch
    mx30.zline.ch

    Domain Information

    rfj.ch

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected

    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.
    C
    64/100
    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, maximum-scale=1.0, user-scalable=no
    3 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Open Sans

    WCAG Fail
    69/100
    Readability
    /30
    28/30

    18px · LH 1.50

    Hierarchy
    /20
    12/20
    WCAG
    /25
    14/25

    1:1 min contrast

    Performance
    /25
    15/25

    1 font · 3 req

    Heading Font

    Open Sans

    Sans0

    Body Font

    Open Sans

    Sans18px

    Contrast Ratio

    1:1

    46 issues

    Reading Comfort

    ~59 CPL

    Optimal (45–75)
    16px
    h1
    24px
    h2
    30px
    h3
    30px
    h4
    18px
    p
    Major Second
    Scale

    ✅ Excellent readability: 18px body text is ideal for all devices.

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

    ✅ Optimal line length: ~59 chars/line (ideal 45–75 CPL).

    ❌ Low contrast: 46 elements fail WCAG AA (min 1.0:1). Increase text/background contrast.

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

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

    GGoogle Fonts

    Color Palette

    10 unique colors
    4.69:1 AA Light
    #ffffff
    Primary· 40.4%
    #76746b
    Other· 6%
    #0362a2
    Accent· 7%
    #1f2d37
    Primary· 6.5%
    #149df7
    Primary· 6%
    #89a099
    Secondary· 5.7%
    #433837
    Secondary· 4.6%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    2

    Categories

    2

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    10 Resources

    8
    Scripts
    2
    Styles
    3
    Async
    0
    Defer

    Top Script Sources

    local(3)sb.scorecardresearch.com(1)ajax.googleapis.com(1)cdnjs.cloudflare.com(1)maps.googleapis.com(1)

    Website Identity

    rfj.ch

    Location detected: 🇨🇭 Switzerlandvia tld
    fr

    Sponsored

    Last analyzed: 13 May 2026 at 06:05

    Historical Analysis & Change Tracking