StackOptic
Back to Search
opener.pl favicon

opener.pl

https://opener.pl· First analyzed 14 May 2026· Updated 14 May 2026
Export
opener.pl
Desktop screenshot of opener.pl
Mobile screenshot of opener.pl
Mobile

Sponsored

Hosting Provider

Cloudflare
cloudflare.com

IP Address

172.67.188.104

Site Location

🇵🇱 Polandvia tld

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

anirban.ns.cloudflare.com.nina.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint
313 ms10%
Speed Index
407 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
941 KB
107 requests
0–49
50–89
90–100

Architecture Stack

Hybrid
⚙️ SSR
Frontend
Framework
Nuxt.js
Infrastructure
Hosting
Cloudflare
CDN
Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

9 Technologies Detected

Analytics

3
Google Analytics
Facebook PixelFullStory

Fonts

2
Google FontsAdobe Fonts (Typekit)

Meta Frameworks

1
Nuxt.jsv2.6

CSS Frameworks

1
Tailwind CSS

CDN

1
Cloudflare

Security

1
reCAPTCHA

SEO Analysis

D58/100
14
10
0
Meta Tags10/15
Content8/12
Headings8/8
Technical11/21
E-E-A-T0/7
Images2/7
Links5/5
URL5/5
Social3/5
Freshness0/4
Mobile3/4
Indexability3/3
O
opener.plopener.pl

Strona główna - Open'er Festival

Open’er Festival to największy i najbardziej zróżnicowany festiwal w Polsce. Co roku występują na nim najważniejsi międzynarodowi artyści reprezentujący wiel...

Description truncated.
Title Length32 chars

Recommended: 50-60 chars (~197px / 580px)

Description Length218 chars

Recommended: 120-160 chars

Issues (0)

    10 issues found

    Upgrade to view details

    Local SEO

    Local Search Readiness

    3/100
    Poor
    1 14 2

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

    Sponsored

    AI & LLM Readiness

    D44/100
    Bot Access
    20/25
    Machine Read.
    13/25
    Schema Data
    0/25
    Citation
    11/25

    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
    nav
    Text ratio:1%
    Words:398
    Token eff.:Optimal
    Sections/1K:5
    Depth:1/5

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary268w
    Descriptive Headingsavg 5.4w
    Canonical URL
    Open Graph3/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (9)
    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.
    B
    77/100
    11
    Passed
    2
    Critical
    1
    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
    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
    7/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    0/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 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.
    47/100
    B
    95 mg
    CO₂e / view
    941.1 KB
    Page Weight
    80%
    Cleaner Than
    New Visitor
    109 mg
    vs
    Returning (cached)
    54 mg
    Annual (10K/mo)
    11.4 kg
    Emission Segments
    Data Center
    5 mg
    Network
    28 mg
    Device
    63 mg
    Resource Breakdown
    JavaScript
    708.6 KB
    Images
    56.3 KB
    CSS
    73.3 KB
    Fonts
    1.0 KB
    HTML
    101.8 KB
    Green Hosting Verified
    Cloudflare
    GWF Verified
    6 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    C

    Security Score

    61%Fair
    Interactive

    HTTPS

    WAF

    49d

    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

    03.04.2026

    Valid Until

    02.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    opener.pl*.opener.pl

    SHA-256 Fingerprint

    DB:E5:B1:51:82:48:FB:59:75:C4:34:12:24:D7:FE:F5:10:DB:8F:A3...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    age
    47022
    alt-svc
    h3=":443"; ma=86400
    cf-cache-status
    DYNAMIC
    cf-ray🇫🇷 Paris
    9fb6066bbd8d531b-CDG
    content-encoding
    zstd
    content-type
    text/html; charset=utf-8
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    68

    SPF
    DKIM
    DMARC

    DMARC Policy

    Quarantine (Moderate)

    MX Records (1)

    alterart.home.pl

    Domain Information

    opener.pl

    Domain Age
    21 years

    Created

    27.04.2005

    Expires

    27.04.2027

    Last Updated

    28.03.2026

    Registrar

    home.pl sp. z o.o.

    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.
    B
    77/100
    Mobile Friendly91 breakpoints
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    jaf-lapture-display + museo-sans

    WCAG AAA
    74/100
    Readability
    /30
    16/30

    14px · LH --

    Hierarchy
    /20
    17/20

    2.29x ratio · ✓ H1→H6

    WCAG
    /25
    21/25

    15.33:1 min contrast

    Performance
    /25
    20/25

    2 fonts · 1 req

    Heading Font

    jaf-lapture-display

    Sans32px

    Body Font

    museo-sans

    Sans14px

    Contrast Ratio

    15.33:1

    WCAG AAA (≥7:1)

    Reading Comfort

    ~31 CPL

    Narrow lines
    32px
    h1
    45px
    h2
    45px
    h3
    14px
    p
    Minor Third
    Scale

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

    ⚠️ Hard to read: Flesch score 39/100. Simplify sentences for wider reach.

    ✅ WCAG AAA contrast: All text meets 7:1 ratio (min 15.3:1).

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

    ✅ Strong hierarchy: Headlines are 2.3x larger than body text.

    ✅ Lean font stack: 2 font families keeps load times fast.

    GGoogle FontsAAdobe FontsBuy on MyFontsFlesch 39

    Color Palette

    12 unique colors
    9.66:1 AAA Light
    #ffffff
    Primary· 15.2%
    #3f4645
    Other· 6.8%
    #1f1e18
    Secondary· 13%
    #363029
    Secondary· 6.1%
    #090402
    Primary· 5.4%
    #f1edee
    Secondary· 4%
    #705d53
    Secondary· 3.9%

    Business & Marketing Stack

    2 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    Advertising

    1
    Facebook PixelMid-Market

    Ad platforms and retargeting pixels

    2

    Categories

    2

    Total Tools

    0

    Enterprise

    1

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    12 Resources

    11
    Scripts
    1
    Styles
    5
    Async
    5
    Defer

    Top Script Sources

    local(5)youtube.com(2)connect.facebook.net(2)google-analytics.com(1)use.typekit.net(1)

    Website Identity

    opener.pl

    21 years old
    Location detected: 🇵🇱 Polandvia tld
    home.pl sp. z o.o.pl

    Sponsored

    Last analyzed: 14 May 2026 at 01:11

    Historical Analysis & Change Tracking