# BeaverCheck Audit Report — https://koloseum.com.pl

**Date:** August 31, 2026  
**URL:** https://koloseum.com.pl  
**Overall Grade:** B (80/100)  
**Report:** https://beavercheck.com/results/cdb1a30b-c374-4222-8da8-5e1424e3aefc

## Top Findings

1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers
2. **[CRITICAL]** HSTS header is missing — Security > Security Headers
3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy
4. **[CRITICAL]** 2 button(s) with no accessible text — Accessibility > Link & Button Quality
5. **[CRITICAL]** No <main> landmark found — Accessibility > Landmark Structure

---

## Lighthouse Scores

| Category | Score |
|----------|-------|
| Performance | 64 |
| Accessibility | 77 |
| Best Practices | 100 |
| SEO | 92 |

---

## Security

### Security Headers (F — 5/100)

*1 of 10 headers properly configured*

- **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year.
- **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'.
- **[WARNING]** X-Frame-Options header is missing — This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN.
- **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter.
- **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features.
- **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis.
- **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'.
- **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers.
- **[WARNING]** X-Powered-By header reveals technology stack — This header discloses server technology (e.g. Express, PHP), helping attackers target known vulnerabilities. Remove it.
- **[PASS]** Server header is present without version info
- **[INFO]** Domain is not in the Chrome HSTS preload list (status: unknown) — Submit your domain to hstspreload.org to close the trust-on-first-use gap. Requires a preload-ready HSTS header (max-age=31536000+, includeSubDomains, preload).

### Content Security Policy (F — 0/100)

*No enforcing CSP policy found*

- **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading.

### TLS & Certificates (A+ — 100/100)

*TLS 1.3, 8 checks passed*

- **[PASS]** TLS 1.3 is used
- **[PASS]** Strong cipher suite is used
- **[PASS]** HTTP/2 is negotiated
- **[INFO]** OCSP stapling not enabled — Without stapling, the browser performs a separate OCSP roundtrip on first connection -- adding latency and leaking the visited host to the CA. Enable OCSP stapling on your TLS server.
- **[PASS]** Certificate is valid (expires in 85 days)
- **[PASS]** Certificate chain has 4 certificates
- **[PASS]** Certificate uses modern signature algorithm
- **[PASS]** Certificate covers 2 domain(s)
- **[PASS]** Certificate is issued by a trusted CA

### Cookie Security (A — 90/100)

*1 cookies analyzed, 1 checks passed*

- **[PASS]** Cookie 'PHPSESSID' has the Secure flag
- **[WARNING]** Cookie 'PHPSESSID' is missing the HttpOnly flag — Without HttpOnly, this cookie can be accessed by JavaScript, making it vulnerable to XSS-based theft.
- **[WARNING]** Cookie 'PHPSESSID' has no SameSite attribute — Without an explicit SameSite attribute, browser default behavior varies. Set SameSite=Lax or Strict.

### Cookie Hygiene (A+ — 100/100)

*All 1 cookie(s) pass hygiene checks*

- **[PASS]** All 1 cookie(s) pass hygiene checks

### WAF / Bot Protection (B — 75/100)

*No WAF detected via response headers*

- **[INFO]** No WAF detected — Response headers don't match any known WAF or bot-management product. Sites exposed to abuse (login, signup, payment) typically benefit from a WAF such as Cloudflare, Akamai, AWS WAF, or Imperva.

### security.txt (C — 60/100)

*No security.txt file found*

- **[INFO]** No security.txt file found — security.txt (RFC 9116) provides a standardized way for security researchers to report vulnerabilities. Create one at /.well-known/security.txt with at least a Contact field.

### Cross-Origin Tab Safety (C — 75/100)

*2 of 2 new-tab link(s) missing rel=noopener*

- **[WARNING]** 2 link(s) open in a new tab without rel=noopener — Without rel="noopener", the destination tab can navigate the original tab via window.opener -- a reverse-tabnabbing phishing primitive. Modern browsers default to noopener since Chrome 88 / Firefox 79 / Safari 12.1, but explicit rel="noopener noreferrer" remains the documented best practice for older browsers, in-app webviews, and security scanners.

### CSP Inline-Style Readiness (B — 90/100)

*4 inline style attribute(s) detected*

- **[INFO]** 4 inline style attribute(s) detected — Each `style=""` attribute forces `style-src 'unsafe-inline'` in any Content-Security-Policy, which negates most of CSP's XSS-mitigation value. 4 inline style(s) is low. Affected element types include: div, p, iframe. Move styles to a stylesheet; use CSS custom properties for runtime-dynamic values; or adopt a nonce/hash CSP policy. Most teams take the stylesheet path because it's also a maintainability win.

### Trusted Types (XSS Sink Hardening) (A+ — 100/100)

*No CSP header -- Trusted Types check is N/A*

- **[PASS]** No CSP header found -- Trusted Types check is N/A

### Bot Challenge Detection (A+ — 100/100)

*Scan reached real page content (no bot-protection interstitial)*

- **[PASS]** No bot-protection interstitial detected -- the rest of the report reflects the real page

### Soft-404 Detection (A+ — 100/100)

*No soft-404 patterns detected in page title or headings*

- **[PASS]** No soft-404 patterns detected in page title or headings

### Empty Page Detection (A+ — 100/100)

*Page has substantive body text and no placeholder / template-leak signals*

- **[PASS]** Page has substantive body text and no placeholder / template-leak signals

### Geo-Restriction Detection (A+ — 100/100)

*No geo-restriction signals detected -- scan reached the page from an allowed region*

- **[PASS]** No geo-restriction detected

### Maintenance Mode Detection (A+ — 100/100)

*No maintenance-mode signals detected -- scan reached a normal page*

- **[PASS]** No maintenance-mode signals detected

### Subresource Integrity Adoption (F — 30/100)

*0% SRI adoption (0/1 third-party resources)*

- **[WARNING]** SRI adoption: 0/1 third-party resources protected (0%) — Of 1 third-party `<script>` / `<link rel=stylesheet>` resources, 0 (0%) declare a Subresource Integrity hash via the `integrity=` attribute. SRI binds the page to the exact bytes of the third-party resource: if the CDN is compromised, attacker-modified bytes won't match the declared hash and the browser refuses to execute the resource.

Missing SRI on (first 1 examples):
  - https://fonts.googleapis.com/css?family=Lato:300,400,700,900&subset=latin-ext

Fix: add `integrity="sha384-..."` and `crossorigin="anonymous"` attributes. Generators: srihash.org, or in-browser via `await crypto.subtle.digest('SHA-384', bytes)`. Cache-bust the resource URL when you change versions, since the integrity hash will mismatch with old cached bytes.

### CORS Depth (A+ — 100/100)

*No CORS response headers -- the resource is same-origin-only by browser default*

- **[PASS]** No CORS response headers -- the resource is same-origin-only by browser default

### Permissions-Policy Granularity (C — 60/100)

*No Permissions-Policy header set -- powerful features (camera / microphone / geolocation / payment / USB) default to allow-on-same-origin*

- **[WARNING]** Permissions-Policy header not set -- features default to allow-on-same-origin — Without a `Permissions-Policy` (or legacy `Feature-Policy`) header, every powerful browser feature defaults to its spec default policy (typically `self`). A third-party iframe injected via XSS or a misconfigured embed can still request access to the user's camera, microphone, geolocation, payment APIs, USB devices, etc. Explicitly deny features the page doesn't need:

```
Permissions-Policy: camera=(), microphone=(), geolocation=(), payment=(), usb=(), accelerometer=(), gyroscope=()
```

Features the page legitimately uses can stay enabled with `feature=(self)`.

### Referrer-Policy Strictness (B — 75/100)

*Referrer-Policy header not set -- browser default applies (modern: strict-origin-when-cross-origin; legacy browsers: no-referrer-when-downgrade)*

- **[INFO]** Referrer-Policy header not set -- browser default applies — Without an explicit `Referrer-Policy` header, the browser falls back to its default policy. Modern browsers (Chrome 85+, Firefox 87+, Safari 15+) default to `strict-origin-when-cross-origin`, which is privacy-safe. Legacy browsers default to the leaky `no-referrer-when-downgrade`, which sends the full URL (including path + query) on cross-origin HTTPS-to-HTTPS requests. Set an explicit header to ensure consistent behavior:

```
Referrer-Policy: strict-origin-when-cross-origin
```

This matches the modern browser default and is privacy-safe without breaking referrer-based same-origin analytics.

### Source Map Exposure (A+ — 100/100)

*No source maps accessible (probed 7 candidate URL(s))*

- **[PASS]** No source maps accessible across 7 probed candidate(s)

### HTML Version Disclosure (A+ — 100/100)

*No software-version disclosures in HTML*

- **[PASS]** No software-version disclosures in HTML

### Open Redirect Surface (A+ — 100/100)

*No redirect-shaped query parameters in DOM links*

- **[PASS]** No redirect-shaped query parameters in DOM links

### Auth Security (A+ — 100/100)

*Page is not a login form -- auth-security checks are N/A*

- **[PASS]** Page does not appear to be a login form

### Subdomain Inventory Exposure (A+ — 100/100)

*No risky subdomain names in certificate SANs*

- **[PASS]** No risky subdomain names in certificate SANs

---

## Advanced Security

### Subresource Integrity (F — 20/100)

*0 of 1 external resources have SRI*

- **[WARNING]** External link from fonts.googleapis.com lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code.

### JS Library Vulnerabilities (A+ — 100/100)

*No known vulnerabilities*

- **[PASS]** No known JavaScript library vulnerabilities detected

### Information Leakage (A+ — 100/100)

*No exposures*

- **[INFO]** No security.txt found — Consider adding a security.txt at /.well-known/security.txt.
- **[PASS]** No sensitive files exposed

### Email Security (C — 60/100)

*DMARC: none, SPF: -all, DKIM*

- **[WARNING]** DMARC policy is none — monitoring only — This only monitors, it doesn't block spoofed emails. Change to p=quarantine or p=reject after monitoring DMARC reports.
- **[PASS]** SPF ends in -all (hard fail) — strongest setting
- **[PASS]** DKIM configured (selectors: default)
- **[INFO]** MTA-STS not configured — MTA-STS forces inbound mail to use TLS, preventing downgrade attacks. Requires both a TXT record at _mta-sts.<domain> and a policy file at https://mta-sts.<domain>/.well-known/mta-sts.txt.
- **[INFO]** TLS-RPT not configured — TLS-RPT (RFC 8460) lets MTAs report TLS-handshake failures, so you can detect and fix MTA-STS misconfigurations. Add a TXT record at _smtp._tls.<domain>.
- **[INFO]** BIMI not configured — BIMI (Brand Indicators for Message Identification) lets supporting clients (Gmail, Apple Mail, Yahoo) display your verified logo next to your messages. Optional but raises trust signals. Requires DMARC at p=quarantine or p=reject to be honored.

### API Surface (A+ — 100/100)

*No API specs or GraphQL introspection found (probed 11 candidate path(s))*

- **[PASS]** No API specs or GraphQL introspection found (probed 11 path(s))

### Permissions-Policy (D — 40/100)

*No header set*

- **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content.

### CORS Configuration (B — 80/100)

*No CORS headers*

- **[PASS]** No CORS headers present — secure default

---

## Performance

### Page Weight Budget (C — 58/100)

*1.9 MB transferred, 52 requests*

- **[INFO]** Page weighs 3.7 MB (1.9 MB transferred)
- **[WARNING]** Images are 1.3 MB — compress or use modern formats — Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
- **[WARNING]** JavaScript is 512 KB — consider code splitting or lazy loading — Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
- **[INFO]** 52 HTTP requests
- **[INFO]** Estimated 0.41 g CO2 per page load

### Third-Party Impact (A — 85/100)

*27% third-party, 0 ms blocking*

- **[INFO]** Third-party code accounts for 27% of page weight (528.1 KiB of 1.9 MiB)
- **[PASS]** Third-party blocking time is low (0 ms)

### Text Compression (A+ — 100/100)

*All text resources are compressed*

- **[PASS]** All text resources are compressed

### Image Optimization (C — 60/100)

*9 images, 0 KB saveable*

- **[WARNING]** https://koloseum.com.pl/assets/images/app/banners/... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://koloseum.com.pl/assets/images/app/logo.svg is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://koloseum.com.pl/assets/images/app/banners/... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.
- **[WARNING]** https://koloseum.com.pl/assets/images/app/banners/... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS.

### JS Execution Cost (C — 60/100)

*1903ms total JS execution*

- **[WARNING]** https://koloseum.com.pl/: 1042ms CPU time
- **[WARNING]** Unattributable: 524ms CPU time
- **[WARNING]** https://koloseum.com.pl/assets/js/jquery-3.3.1.min...: 337ms CPU time

### Font Loading (A+ — 100/100)

*7 fonts (126 KB)*

- **[INFO]** 7 font(s) use font-display: swap (FOUT risk but functional)

### JS Bundles (A+ — 100/100)

*20 scripts, 0 KB unused*


### Resource Caching (A+ — 100/100)

*All resources properly cached*

- **[PASS]** No caching issues found

### Critical Rendering Path (A+ — 100/100)

*No render-blocking resources*

- **[PASS]** No render-blocking resources detected

### Resource Hints (A+ — 100/100)

*No optimization needed*

- **[PASS]** No resource hint issues

### HTTP/3 (QUIC) (A+ — 100/100)

*HTTP/3 advertised via Alt-Svc*

- **[PASS]** HTTP/3 (QUIC) is supported — First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.

### Compression Algorithm (A+ — 100/100)

*Main response uses brotli*

- **[PASS]** Main HTML response uses brotli (Content-Encoding: br) — Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.

### LCP Image Preload (A+ — 100/100)

*LCP preload audit not available*

- **[PASS]** LCP image preload audit not available for this scan

### Main HTML Cache-Control (A+ — 100/100)

*Main HTML uses no-store -- correct for sensitive/dynamic content*

- **[PASS]** Main HTML uses no-store -- correct for sensitive/dynamic content

### Server-Timing Observability (B — 85/100)

*No Server-Timing header found*

- **[INFO]** No Server-Timing header found — Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.

### Server Response Intelligence (A+ — 95/100)

*2 server-response signal(s) detected*

- **[PASS]** `Vary` header declared: Accept-Encoding,User-Agent — The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
- **[INFO]** No `ETag` or `Last-Modified` -- conditional GET not supported — Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.

### Page Weight Inventory (C — 55/100)

*52 resources · 1.9 MB · 0 KB savings available*

- **[WARNING]** Page weight 1.9 MB exceeds 1 MB target by 964 KB
- **[INFO]** 27 third-party resources (27% of weight)
- **[INFO]** 2 resources over 200KB

### Render-Blocking Resources (A+ — 100/100)

*No render-blocking resources detected*

- **[PASS]** No render-blocking resources detected in <head>

### Third-Party Resources (A+ — 100/100)

*No third-party resources detected*


### JavaScript Blocking (B — 80/100)

*1 JS blocking issue(s) detected*

- **[WARNING]** 7 render-blocking <script src> tag(s) without async/defer — Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.

### CSS Performance Depth (A — 88/100)

*1 CSS depth issue(s) detected*

- **[WARNING]** 10 render-blocking stylesheet(s) -- recommended: <=3 — Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.

---

## Content Quality

### Links (A — 90/100)

*33 links checked, 31 healthy, 2 broken*

- **[WARNING]** 31 of 33 links are healthy
- **[CRITICAL]** Broken link: https://dioma.pl/projekty/koloseum/pl/administrowanie.html — Found in <a href>. Returns HTTP 404.
- **[CRITICAL]** Broken link: https://dioma.pl/projekty/koloseum/pl/zarzadzanie.html — Found in <a href>. Returns HTTP 404.

### Mixed Content (A+ — 100/100)

*No mixed content detected — all resources use HTTPS.*

- **[PASS]** No mixed content detected — all resources use HTTPS

### Open Graph (F — 0/100)

*No Open Graph tags found — social sharing previews will be generic.*

- **[WARNING]** No Open Graph meta tags found — Without og:title, og:description, and og:image, social media platforms will generate a generic preview when your page is shared.

### Open Graph / Twitter Card Depth (A+ — 100/100)

*No OG image or Twitter card set -- depth check is N/A (presence covered by Open Graph section)*

- **[PASS]** No OG image / Twitter card to evaluate

### Structured Data (C — 40/100)

*No structured data (JSON-LD) found.*

- **[INFO]** No structured data (JSON-LD) found — Adding structured data helps search engines understand your content and can enable rich results.

### Rich Results Eligibility (C — 75/100)

*No JSON-LD found -- no rich-result eligibility*

- **[INFO]** No JSON-LD structured data on the page — No `<script type="application/ld+json">` blocks found. Without structured data, search engines fall back to inferring page meaning from raw HTML -- which works but doesn't unlock SERP features (rich snippets, knowledge panel, FAQ accordion, breadcrumb trail). Adding even basic JSON-LD (Organization for the site identity, BreadcrumbList for navigation context) is a low-effort SEO win.

### Image Optimization (F — 45/100)

*5 issues found across 4 images*

- **[WARNING]** 1 images significantly larger than display size — Resizing to display dimensions could save approximately 70 KB.
- **[WARNING]** 4 images missing explicit width/height — Images without dimensions cause layout shifts (CLS). Set explicit width and height attributes.
- **[INFO]** 3 below-fold images missing loading="lazy" — Lazy loading defers below-fold images, reducing initial page weight.
- **[WARNING]** All 3 images use legacy formats (JPEG/PNG/GIF) — WebP offers 25-35% smaller files than JPEG. Use <picture> with <source type="image/webp"> for modern format support.
- **[INFO]** 2 image(s) wider than 400px without srcset (no responsive serving) — These images deliver the same asset to every viewport (mobile, tablet, retina). Adding srcset / <picture> lets the browser pick a viewport-appropriate variant and typically saves 40-70% of bytes on mobile. Sample: https://koloseum.com.pl/assets/images/app/banners/6.jpg, https://koloseum.com.pl/assets/images/app/banners/7.jpg.

### Autoplay Media (A+ — 100/100)

*No autoplay media on the page*

- **[PASS]** No autoplay media on the page

---

## Infrastructure

### DNS Records (A — 85/100)

*1 A records, 347 ms lookup*

- **[PASS]** Resolves to 1 IPv4 address(es)
- **[INFO]** Single A record — no DNS redundancy — Multiple A records provide failover if one server goes down.
- **[INFO]** No IPv6 (AAAA) records
- **[PASS]** 2 nameserver(s) configured
- **[PASS]** 1 mail exchanger(s) configured
- **[PASS]** SPF record present in TXT
- **[WARNING]** DNS resolution is slow (347 ms) — Slow DNS adds latency to every page load. Consider a faster DNS provider.

### Subdomain Takeover (A+ — 100/100)

*No subdomain takeover risk detected*

- **[PASS]** No CNAME record present

### DNSSEC (B — 80/100)

*Unsigned (DNSSEC not deployed)*

- **[INFO]** DNSSEC is not deployed — The zone is not DNSSEC-signed. Users on validating resolvers (Cloudflare 1.1.1.1, Quad9 9.9.9.9, growing default in mobile resolvers) get no protection against DNS spoofing for this domain. Most registrars now offer DNSSEC at a single click; consider enabling it for sites where authenticity matters (banking, healthcare, government).

### CAA Records (B — 80/100)

*No CAA records (any CA may issue certificates)*

- **[INFO]** No CAA records published — Without CAA records, any publicly-trusted CA can issue certificates for this domain. Adding a CAA record (`yourdomain. IN CAA 0 issue "letsencrypt.org"`) restricts issuance to CAs you authorize. Required by CAB Forum baseline since 2017; the default of 'any CA' is widely supported but is the broader attack surface for issuance fraud.

### Reverse DNS (B — 75/100)

*0/1 IPs match cert SAN*

- **[INFO]** PTR for 188.210.220.241 does not match any cert SAN: mail.koloseum.gda.pl — Common when behind a CDN or shared hosting (PTR points at the provider's hostname). Mismatch can also affect mail deliverability if this IP sends email -- many MTAs reject mail when forward+reverse DNS disagree.

### Multi-Resolver DNS Speed (B — 80/100)

*Mean 172ms across 3 resolvers (spread 17ms)*

- **[PASS]** Quad9: 165ms
- **[PASS]** Cloudflare: 171ms
- **[PASS]** Google: 182ms

### Redirect Chain (A+ — 100/100)

*No redirects — direct access*

- **[PASS]** No redirects — direct access

### IPv6 Readiness (C — 60/100)

*No IPv6 support*

- **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

### Crawlability (B — 80/100)

*robots.txt present, no sitemap*

- **[PASS]** robots.txt is present
- **[INFO]** No sitemap.xml found — A sitemap helps search engines discover and index your pages more efficiently.
- **[INFO]** robots.txt does not reference a sitemap — Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.

### URL Variants (A+ — 100/100)

*www/non-www, trailing slash, HTTP→HTTPS*

- **[PASS]** www/non-www redirect configured correctly (preferred: non-www)
- **[PASS]** HTTP correctly redirects to HTTPS permanently

### Domain Intelligence (A+ — 100/100)

*koloseum.com.pl — via PERSKIMEDIA Szymon Perski, 3 years old, hosted on DATASPACE - DATASPACE P.S.A., PL*

- **[PASS]** Domain registered until Sep 14, 2027 (1 years remaining)
- **[INFO]** DNSSEC is not enabled — DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
- **[PASS]** Registrar: PERSKIMEDIA Szymon Perski
- **[PASS]** Hosting: DATASPACE - DATASPACE P.S.A., PL

---

## Compliance

### WCAG Compliance (A+ — 100/100)

*No testable criteria*


### Cookie Consent & Privacy (B — 80/100)

*No consent signals detected*

- **[WARNING]** No privacy policy link detected — A privacy policy page is recommended for transparency and may be legally required.
- **[INFO]** No terms of service link detected
- **[INFO]** No cookie consent banner detected
- **[PASS]** 1 essential cookie(s) on initial load — no consent required
- **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance.

### Consent UX Depth (A+ — 100/100)

*No consent-UX depth issues detected*

- **[PASS]** No consent-UX depth issues detected

### Tracker Inventory (A+ — 100/100)

*No known trackers detected on this page*

- **[PASS]** No known trackers detected on this page

### Language & i18n (A — 90/100)

*Lang attribute present*

- **[PASS]** <html lang> attribute is present
- **[PASS]** <html lang> value is valid
- **[INFO]** No Content-Language HTTP header
- **[INFO]** Language signals are inconsistent — The <html lang> attribute and Content-Language header should agree.

### Hreflang Configuration (A+ — 100/100)

*No hreflang tags on this page*

- **[PASS]** No hreflang tags found (single-language site)

### Internationalization Extras (A+ — 100/100)

*No additional i18n signals detected*

- **[PASS]** No additional i18n signals detected

### Readability & Typography (A+ — 100/100)

*Font sizes and tap targets checked*


### Viewport Configuration (C — 60/100)

*Viewport prevents zooming*

- **[PASS]** Viewport meta tag is present
- **[PASS]** width=device-width is set
- **[CRITICAL]** Viewport prevents user zooming — user-scalable=no or maximum-scale < 2 prevents users from zooming. This is a WCAG 1.4.4 (Level AA) failure and an accessibility barrier for users with low vision.

### Accessibility Statement (B — 70/100)

*No accessibility statement detected*

- **[WARNING]** No accessibility statement detected — Sites are increasingly expected to publish an accessibility statement. Required by EU Web Accessibility Directive 2016/2102 for public-sector bodies; recommended best practice elsewhere. Common URLs: /accessibility, /accessibility-statement, /a11y.

### GDPR Article 13 Disclosures (F — 25/100)

*0 / 8 Art. 13 categories matched in homepage body*

- **[WARNING]** GDPR Article 13 disclosure coverage: 0 / 8 categories — Scanned the homepage body text AND the linked /privacy page for GDPR Article 13 disclosures. Matched 0 of 8 categories: . Missing: Data Protection Officer contact (where applicable), Data retention period, Data subject rights (access, erasure, rectification, etc.), Identity / contact details of the data controller, International data transfers, Legal basis for processing, Recipients of personal data, Right to lodge a complaint with a supervisory authority. Note: only the FIRST same-origin privacy-policy link is followed; deeper sub-pages (e.g. /legal/data-subject-rights) are not fetched.

### Third-Party Trackers (C — 55/100)

*1 trackers detected*

- **[INFO]** 1 third-party trackers detected — Found 1 analytics, 0 advertising, 0 marketing, 0 tag manager, 0 session-replay, 0 heatmap trackers.
- **[WARNING]** Trackers detected but no cookie policy found — This page loads 1 trackers but no cookie policy was detected. GDPR requires disclosure when using tracking cookies.
- **[WARNING]** Trackers detected but no privacy policy found — Most data protection regulations require a privacy policy when collecting user data via trackers.

### Cookie & Tracker Inventory (A+ — 100/100)

*1 cookies · 1 trackers · 0 pre-consent*

- **[INFO]** 1 third-party tracker(s) detected on page

### Tracking Pixel Inventory (A+ — 100/100)

*No tracking pixels detected*

- **[PASS]** No tracking pixels detected

### Browser Fingerprinting (A+ — 100/100)

*No browser-fingerprinting libraries detected*

- **[PASS]** No browser-fingerprinting libraries detected

### Cross-Site Cookies (SameSite=None) (A+ — 100/100)

*No SameSite=None cookies -- no cross-site travel surface*

- **[PASS]** No cookies opted in to cross-site travel (SameSite=None)

### Beacon Tracking (sendBeacon) (A+ — 100/100)

*No navigator.sendBeacon usage detected in inline scripts*

- **[PASS]** No navigator.sendBeacon usage detected in inline scripts

---

## Legal

### Legal Page Ecosystem (F — 0/100)

*0 of 7 expected legal pages detected*

- **[WARNING]** Privacy Policy not detected — No link matching common Privacy Policy URL patterns or link text was found. Most websites are expected to have a Privacy Policy, especially those collecting user data.
- **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data.
- **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data.
- **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data.
- **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data.
- **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data.
- **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data.

### Copyright Notice (A+ — 100/100)

*© 2026 Koloseum*

- **[PASS]** Copyright notice is up to date — Copyright notice is up to date: © 2026 Koloseum
- **[PASS]** Copyright holder: Koloseum

### Regulatory Indicators

*1 regulatory indicator(s) detected*

- **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments.
- **[INFO]** GDPR indicators detected (moderate confidence) — Indicators suggesting GDPR may be relevant: European TLD detected: .pl. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents.

### Third-Party Data Sharing

*0 third-party service(s) detected*

- **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows.
- **[INFO]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts.

### Compliance Badges (C — 55/100)

*0 compliance badge(s) detected*

- **[INFO]** No compliance badges detected — No recognized compliance certification badges or seals were found. This is common — many sites do not display compliance badges.

---

## Availability

### CDN & Delivery (D — 50/100)

*No CDN detected*

- **[WARNING]** No CDN detected — A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.

### HTTP Caching (D — 40/100)

*no-store (uncacheable)*

- **[INFO]** Cache-Control: no-store prevents all caching — Intentional for dynamic content, but increases server load for every page view.
- **[INFO]** No ETag or Last-Modified header — Conditional requests (304 Not Modified) are not possible without validators.

### Operational Status Page (B — 80/100)

*No status page link detected*

- **[INFO]** No operational status page link detected — Status pages communicate planned maintenance and incidents to users -- a hallmark of operationally-mature services. Most SaaS teams publish one via Atlassian Statuspage, Instatus, BetterUptime, or a self-hosted Cachet. Smaller sites legitimately don't need one; flagged as Info, not a failure.

### Transport Security (A — 85/100)

*HTTP/3, HSTS, and TLS version analysis*

- **[PASS]** HTTP/3 (QUIC) supported — The server advertises HTTP/3 via Alt-Svc for faster connections on mobile networks.
- **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks.
- **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT)

### Health Check Endpoint (A+ — 100/100)

*Health endpoint at https://koloseum.com.pl/api/health (HTTP 200)*

- **[PASS]** Public health endpoint at https://koloseum.com.pl/api/health

### CDN Cache Observability (B — 85/100)

*No CDN cache-status headers in the response*

- **[INFO]** No CDN cache-status headers in the response — Without an X-Cache / CF-Cache-Status / X-Vercel-Cache / Age header, you can't tell from outside whether a request hit the cache or went to origin. Operationally important: enables debugging stale-content reports and verifying cache rules. Most managed CDN platforms emit at least one of these by default; absence often means the platform's diagnostic headers are stripped at an upstream proxy.

---

## Accessibility

### Landmark Structure (C — 55/100)

*2 landmarks*

- **[CRITICAL]** No <main> landmark found — Screen reader users cannot quickly navigate to the primary content. Wrap your main content in <main>.
- **[PASS]** 1 <nav> landmark(s) found
- **[INFO]** No banner (header) landmark
- **[WARNING]** Skip navigation link is missing (WCAG 2.4.1) — Add a skip link as the first focusable element so keyboard users can bypass repeated navigation.

### Heading Hierarchy (D — 45/100)

*19 headings, 3 skip(s)*

- **[WARNING]** Multiple H1 headings (9 found) — A page should have only one H1. Multiple H1s dilute the document outline.
- **[WARNING]** Heading level skipped: H1 → H4 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H3 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.
- **[WARNING]** Heading level skipped: H1 → H5 (missing H2) — Skipping heading levels breaks the document outline. Screen readers may interpret missing levels as structural errors.

### Heading Text Quality (A — 90/100)

*1 heading-text-quality issue(s) detected*

- **[WARNING]** 1 heading(s) are over 120 characters -- likely a misformatted paragraph — Headings beyond 120 characters are almost always full sentences or paragraphs that received heading semantics by mistake (e.g., a CMS editor selected the wrong block type, or a template wrapped a body paragraph in `<h2>`). Screen readers will announce these as "heading" and read the entire paragraph at heading prosody. Affected:
  - H3: 130 chars

### Alt Text Quality (A+ — 100/100)

*All 4 images OK*

- **[PASS]** 2 decorative image(s) correctly marked
- **[PASS]** 2 image(s) with good alt text

### Form Accessibility (B — 76/100)

*4 of 4 controls have issues*

- **[WARNING]** 4 control(s) rely on placeholder only — Placeholder text disappears on focus and is not a reliable label.

### Link & Button Quality (B — 74/100)

*2 issue(s) across 33 links and 6 buttons*

- **[WARNING]** 2 link(s) open in new tab without warning — Add '(opens in new tab)' to link text or aria-label.
- **[CRITICAL]** 2 button(s) with no accessible text — Icon-only buttons need an aria-label so screen readers can announce them.
- **[PASS]** 31 link(s) with descriptive text

### Form Input Types (A+ — 100/100)

*4 form control(s) checked, no type mismatches*

- **[PASS]** No input-type mismatches detected

### Form Input Quality (A+ — 100/100)

*4 form control(s) checked, no input-semantic issues*

- **[PASS]** All form input semantics look correct

### Mobile Keyboard & Autofill (D — 60/100)

*3/3 eligible field(s) missing autocomplete or inputmode*

- **[WARNING]** 2 field(s) missing recommended autocomplete attribute — WCAG 1.3.5 (Level AA): inputs whose purpose maps to a Common Input Purpose value should declare it via `autocomplete=`. Required for password managers, browser autofill, and assistive tech that customizes inputs (e.g., simplified keyboards). Mobile autofill in particular cuts form-completion time by 30-50% when these are present. Affected purposes: name, email.
- **[WARNING]** 1 field(s) would benefit from inputmode attribute — Mobile browsers pick the on-screen keyboard layout from `inputmode=` when present (numeric pad, tel dialpad, email keyboard). Without it, users see the default text keyboard and must mode-switch -- 2-3 extra taps per phone-number or numeric-ID field. Type-based defaults exist (`type=tel` shows the tel keyboard on most browsers) but `inputmode` is the explicit, cross-browser way to control this. Affected types: email.

### Document Language (A+ — 100/100)

*Lang attribute set to "pl"*

- **[PASS]** <html lang="pl"> is set and valid

### Tabindex Anti-Patterns (A+ — 100/100)

*No explicit tabindex attributes found*

- **[PASS]** No explicit tabindex attributes found

### Iframe Accessibility (A — 90/100)

*1/1 iframe(s) missing title; 0 placeholder(s)*

- **[WARNING]** <iframe> missing title attribute (src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d2323.7397145407367!2d18.6…") — WCAG 4.1.2: iframes need a title attribute so screen readers can announce what's embedded. Without one, the announcement is just "iframe" -- the user has no way to decide whether to enter or skip.

### Tap Target Adequacy (A+ — 100/100)

*All tap targets meet WCAG 2.5.5/2.5.8 sizing*

- **[PASS]** All tap targets meet WCAG 2.5.5 (44x44px) sizing

### Mobile-Readable Font Sizes (A+ — 100/100)

*All 50 visible text node(s) render at >= 12 CSS pixels*

- **[PASS]** All text uses legible mobile font sizes (>= 12 CSS px)

---

## UX

### 404 Error Page (C — 55/100)

*HTTP 404, custom page*

- **[PASS]** Correct 404 status code returned
- **[PASS]** Custom styled 404 page

### Favicon & Branding (F — 30/100)

*2 icon(s) detected*

- **[PASS]** favicon.ico present at site root
- **[PASS]** HTML icon links detected
- **[INFO]** No apple-touch-icon detected — iOS devices use this when users add your site to their home screen. Add <link rel='apple-touch-icon' sizes='180x180' href='/apple-touch-icon.png'>.

### Web Manifest (D — 40/100)

*Not found*

- **[INFO]** No web manifest found — No manifest at standard paths (/manifest.json, /site.webmanifest). A manifest is optional but enables PWA features like home screen installation and standalone display.

### PWA Depth (A+ — 100/100)

*No PWA depth issues detected*

- **[PASS]** No PWA depth issues detected

### Dark Mode Support (D — 40/100)

*No dark mode signals*

- **[INFO]** No dark mode signals detected — Consider adding CSS with @media (prefers-color-scheme: dark) and <meta name='color-scheme' content='light dark'>.
- **[INFO]** Detection limited to meta tags and inline styles — External CSS files may contain prefers-color-scheme rules not visible to this scan.

### Print Stylesheet (D — 40/100)

*No print styles*

- **[INFO]** No print-specific styles detected — When users print this page, they get the screen layout including navigation and non-essential elements. Add @media print rules to hide navigation and optimize layout for paper.

### Navigation UX (F — 20/100)

*No navigation patterns*

- **[PASS]** 1 navigation landmark(s) detected
- **[PASS]** Hamburger menu detected (responsive design)
- **[INFO]** No breadcrumbs, search, or skip link detected — These navigation aids help users orient themselves and find content efficiently, especially on large sites.

### Mobile UX Depth (A+ — 97/100)

*1 mobile-depth signal(s) detected*

- **[INFO]** No `<meta name="theme-color">` -- browser chrome falls back to default — Without `theme-color`, Android Chrome's status bar and iOS Safari's toolbar fall back to a generic gray. Adding a single hex color in `<meta name="theme-color" content="#0066cc">` tints them to your brand color across all mobile browsers.

---

## SEO

### Canonical URL (B — 80/100)

*Minor issues*

- **[WARNING]** No canonical tag found — Search engines will determine the canonical URL themselves, which may cause duplicate content issues.

### Meta Tags (B — 80/100)

*Title: 67 chars*

- **[PASS]** Page title is set
- **[INFO]** Title is 67 characters — may be truncated in search results
- **[WARNING]** No meta description tag found — Without a meta description, Google auto-generates a snippet from page content -- usually less click-attractive than a hand-written summary. Add `<meta name="description" content="...">` with a 70-160 char summary.
- **[INFO]** Title and H1 have very different wording — Alignment helps users confirm they've reached the right page.

### Title Style Depth (A+ — 100/100)

*Title style is clean -- consistent separator, no stale year, no keyword stuffing*

- **[PASS]** Title style is clean

### Content Depth (B — 80/100)

*307 words, Very Difficult*

- **[PASS]** Page has 307 words of content
- **[INFO]** Reading level: Very Difficult (grade 19)

### Internal Links (A+ — 100/100)

*28 internal, 5 external*

- **[PASS]** 28 internal links (85%)
- **[PASS]** 100% of links use descriptive anchor text
- **[INFO]** 28 internal / 5 external links

### Image SEO (B — 80/100)

*4 images, 1 descriptive filenames*

- **[WARNING]** 75% of images have non-descriptive filenames — Search engines use filenames as a signal. Rename to descriptive names like 'team-photo.jpg'.

### Hreflang

*0 hreflang tags*


### Hreflang URL Quality (A+ — 100/100)

*No hreflang tags on the page*

- **[PASS]** No hreflang tags on the page

### Hreflang Completeness (A+ — 100/100)

*No hreflang tags on this page -- check is N/A (single-language site or unannotated)*

- **[PASS]** No hreflang tags found -- completeness check is N/A

### Sitemap Freshness (C — 75/100)

*No sitemap.xml found*

- **[INFO]** No sitemap.xml found — Sitemaps help search engines discover and prioritize URLs. Not strictly required for small sites where every page is linked from the homepage, but recommended once a site grows beyond a few dozen URLs.

### Sitemap × Robots Consistency (C — 75/100)

*Sitemap or robots.txt missing -- consistency check skipped*

- **[INFO]** Cross-check skipped (sitemap or robots.txt absent)

### Sitemap Hygiene (A+ — 100/100)

*No sitemap to evaluate -- depth check is N/A*

- **[PASS]** No sitemap fetched -- depth check skipped

### Markup Quality (A+ — 95/100)

*1 markup-quality issue(s) detected*

- **[INFO]** 3 redundant ARIA role attribute(s) on native semantic element(s) — The W3C "ARIA in HTML" spec calls this its first rule: don't use ARIA when a native HTML element already conveys the semantics. `<button role="button">`, `<a href role="link">`, `<nav role="navigation">`, `<main role="main">` -- the role attribute either does nothing or shadows the native semantic, occasionally breaking assistive-tech behaviors. Remove the redundant role.

---

## Sustainability

### CO2 Per Page Load (B — 70/100)

*0.55g CO2 per view*

- **[INFO]** 0.55g CO2 per page view — This page transfers 1.9 MB, producing an estimated 0.55g of CO2 per visit using the Sustainable Web Design model (v4). Breakdown: data center 0.10g, network 0.10g, end-user device 0.35g.
- **[INFO]** At 10,000 monthly views: 66.0 kg CO2/year — With 10,000 page views per month, this page would generate approximately 66.0 kg of CO2 annually — equivalent to charging 8245 smartphones.

### Green Hosting (D — 50/100)

*Unknown*

- **[INFO]** Hosting provider could not be identified — Without knowing the provider, we cannot determine their energy sourcing. Check with your hosting provider about their renewable energy commitments.
- **[INFO]** Green hosting status based on known provider commitments — Green hosting detection uses a curated database of provider renewable energy commitments. This is not a real-time verification. For authoritative checks, visit thegreenwebfoundation.org.

### Repeat Visit Weight (A+ — 100/100)

*100% cached*

- **[PASS]** 100% reduction on repeat visits — Returning visitors download only 5 KB (vs 1987 KB first visit). 50 of 52 resources are served from browser cache, saving 0.55g CO2 per repeat visit.
- **[INFO]** Repeat visit: 0.00g CO2 (first visit: 0.55g)

### Carbon Budget (B — 70/100)

*44th percentile*

- **[INFO]** 0.55g CO2 — below the median website (0.60g) — Better than an estimated 56% of websites, but above the sustainability target of 0.50g. Reducing page weight would help reach the target.
- **[INFO]** Estimated 44th percentile — Compared to: top 10% = 0.20g, target = 0.50g, median = 0.60g per page view.

### Transfer Efficiency (A+ — 100/100)

*100% efficient*

- **[PASS]** Transfer efficiency: 100% — Only 0 KB of potential savings identified. Your page is well-optimized for size.

### Web Font Weight Variants (A+ — 100/100)

*4 font weights loaded across 1 famil(y/ies) -- reasonable*

- **[PASS]** 4 font weight(s) loaded across 1 famil(y/ies)

---

---

*Generated by [BeaverCheck](https://beavercheck.com) — https://beavercheck.com/results/cdb1a30b-c374-4222-8da8-5e1424e3aefc*