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open.fm

https://open.fm· First analyzed 20 May 2026· Updated 20 May 2026
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open.fm
Desktop screenshot of open.fm
Mobile screenshot of open.fm
Mobile

Sponsored

Hosting Provider

o2 Sp. Z.o.o.

IP Address

193.222.135.72

Site Location

🇵🇱 Warszawa, Polandvia schema_nap

Server Location

🇵🇱 Warsaw, Poland

ASN

AS31080

Organization

o2 Sp. Z.o.o.

Server

Nginx

Nameservers

ns2.wp.pl.ns1.wp.pl.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
902 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.1 MB
95 requests

Image Optimization

Lazy LoadResponsiveVercel Image Optimization
0–49
50–89
90–100

Architecture Stack

Hybrid
⚙️ SSR
Frontend
Framework
Next.js
Infrastructure
Hosting
o2 Sp. Z.o.o.
CDN
Vercel Image

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

8 Technologies Detected

Advertising

3
Google AdsGoogle AdSenseCriteo

Meta Frameworks

1
Next.js

CSS Frameworks

1
Tailwind CSS

Analytics

1
Google Analytics

Tag Managers

1
Google Tag Manager

Web Servers

1
Nginx

SEO Analysis

A81/100
23
7
0
Meta Tags15/15
Content10/12
Headings8/8
Technical22/25
E-E-A-T5/7
Images4/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile1/4
Indexability3/3
O
open.fmopen.fm

Największe polskie radio internetowe online - Open FM

Radio internetowe z twoimi ulubionymi stacjami muzycznymi, dostępnymi bezpośrednio z przeglądarki. Słuchaj najlepszego radia online!

Title Length53 chars

Recommended: 50-60 chars (~324px / 580px)

Description Length132 chars

Recommended: 120-160 chars

Issues (0)

    7 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    11 rules

    Local SEO

    Local Search Readiness

    20/100
    Needs Work
    5 15

    Sponsored

    AI & LLM Readiness

    D51/100
    Bot Access
    20/25
    Machine Read.
    11/25
    Schema Data
    3/25
    Citation
    17/25

    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

    Machine Readability

    llms.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    navheader/footer
    Text ratio:5%
    Words:1,722
    Token eff.:Optimal
    Sections/1K:20.3
    Depth:2/5

    Structured Data

    1 JSON-LD
    Organization×1.1
    sameAs entity links

    Citation Readiness

    Opening Summary77w
    Descriptive Headingsavg 3.5w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    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.
    A
    87/100
    14
    Passed
    2
    Critical
    0
    Warnings
    Images & Alt Text
    20/20
    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
    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
    9/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    1 recommendation
    • •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.
    53/100
    B
    140 mg
    CO₂e / view
    1.1 MB
    Page Weight
    70%
    Cleaner Than
    New Visitor
    160 mg
    vs
    Returning (cached)
    80 mg
    Annual (10K/mo)
    16.8 kg
    Emission Segments
    Data Center
    31 mg
    Network
    34 mg
    Device
    75 mg
    Resource Breakdown
    JavaScript
    487.2 KB
    Images
    150.7 KB
    CSS
    37.4 KB
    Fonts
    14.8 KB
    HTML
    51.9 KB
    Other
    388.6 KB
    Green Hosting Not Verified
    o2 Sp. Z.o.o.
    3 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    B

    Security Score

    71%Good
    Static / Informational

    HTTPS

    No WAF

    64d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    DigiCert Inc

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    11.07.2025

    Valid Until

    23.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.open.fmopen.fm

    SHA-256 Fingerprint

    E4:F1:DB:8A:BD:60:83:1B:0D:BC:DB:35:08:C9:83:60:4C:B9:A0:DD...

    Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ch
    device-memory, dpr, width, viewport-width, rtt, downlink, ec...
    accept-ch-lifetime
    604800
    cache-control
    🔴 No Cache(private, no-cache, no-store, max-age=0, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-type
    text/html; charset=utf-8
    date
    Wed, 20 May 2026 12:16:55 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    95

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    mx-gda.grupawp.pl
    mx-waw.grupawp.pl

    Domain Information

    open.fm

    Domain Age
    18y 6m

    Created

    18.11.2007

    Expires

    17.11.2027

    Last Updated

    01.02.2026

    Registrar

    OVH

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    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.
    B
    76/100
    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=2.0, viewport-fit=cover
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Helvetica Neue

    WCAG AAA
    82/100
    Readability
    /30
    19/30

    14px · LH 1.43

    Hierarchy
    /20
    19/20

    2x ratio · ✓ H1→H6

    WCAG
    /25
    22/25

    17.76:1 min contrast

    Performance
    /25
    22/25

    System fonts

    Heading Font

    Helvetica Neue

    Sans28px

    Body Font

    Helvetica Neue

    Sans14px

    Contrast Ratio

    17.76:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~64 CPL

    Optimal (45–75)
    28px
    h1
    24px
    h2
    22px
    h3
    14px
    p

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

    ✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

    ✅ Optimal line length: ~64 chars/line (ideal 45–75 CPL).

    ⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 17.8:1).

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

    Fluid Type (rem)Flesch 32

    Color Palette

    6 unique colors
    2.24:1 Fail Light
    #ffffff
    Background· 40.4%
    #adadad
    Other· 4.8%
    #0a0022
    Background· 49.2%
    #504a5a
    Secondary· 1.7%
    #200730
    Primary· 1.6%

    Business & Marketing Stack

    3 Tools Detected

    Advanced

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Social Media

    1
    Facebook SDKFree

    Social widgets and sharing tools

    2

    Categories

    3

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Well-developed marketing technology stack

    Ad Networks

    Google AdSenseSovrnPubMaticOpenXIndex ExchangePrebid.js

    Sponsored

    Scripts & Styles

    26 Resources

    20
    Scripts
    6
    Styles
    0
    Async
    18
    Defer

    Top Script Sources

    ofmweb.wpcdn.pl(17)open.fm(3)

    Website Identity

    Open FM

    Open FM

    Organization

    Open FM to internetowe radio streamingowe, które oferuje szeroką gamę stacji muzycznych, każda dostosowana do różnych gustów i preferencji. Od muzyki pop przez rock, hip-hop, muzykę elektroniczną, aż po jazz i klasykę, Open FM zapewnia swoim słuchaczom dostęp do najlepszej muzyki na każdą okazję.

    open.fm/
    18 years old

    ul. Żwirki i Wigury 16, Warszawa

    02-092, Warszawa

    PL

    Location detected: 🇵🇱 Poland, Warszawavia schema_nap
    OVHpl

    Sponsored

    Last analyzed: 20 May 2026 at 12:17

    Historical Analysis & Change Tracking