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https://schalke04.de

Content

· 9 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
88
GRADE
B
FIX
1
REVIEW
2
PASS
6
INFO
0
Checks
9
6 PASS 2 REVIEW 1 FIX
F
Image Optimization
Action
5 issues found across 66 images
FIX
5 issues found across 66 images
Warning::
5 images significantly larger than display size
Resizing to display dimensions could save approximately 45 KB.
Got: ~45 KB wasted
Warning::
64 images missing explicit width/height
Images without dimensions cause layout shifts (CLS). Set explicit width and height attributes.
Info::
56 below-fold images missing loading="lazy"
Lazy loading defers below-fold images, reducing initial page weight.
Warning::
All 37 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::
10 image(s) rendered at a different aspect ratio than the source
The displayed dimensions distort the source -- CSS is forcing the image into a container at the wrong ratio, producing visible stretching or squashing. Either crop the source to match or use object-fit: cover (and accept the crop). Sample: https://storage.schalke04.de/sites/1/2026/05/260511_keyvisual_sgu_homepagebg-992x558.jpg, https://storage.schalke04.de/sites/1/2026/07/20260731-muslic-992x558.jpg, https://storage.schalke04.de/sites/1/2026/07/20260730-livestream-kassel-hd700-992x558.jpg (+7 more).
C
Brand Presence
Action
Site-name consistency, favicon, social image, meta tags, schema, and contact signals
REVIEW

Brand Presence

Your brand name differs across channels — visitors see inconsistent identity.

C

63/100

Site name appears as

Page titleFC Gelsenkirchen-Schalke 04 e.V.
og:site_nameFußball
twitter:site—
Organization.name—

Inconsistent — names differ across channels

Brand assets

Favicon

15/15

covers multiple sizes + apple-touch-icon

Social share image

14/20

og:image set; twitter:image missing

Meta completeness

20/20

Organization schema

4/15

Organization schema present but missing all recommended fields

Contact info discoverable

5/10

mailto link + tel link

Findings

  • Brand name differs across channels — users see inconsistent identity
  • Add twitter:image — Twitter falls back to og:image only when it's larger than 300×157
  • Organization schema missing logo — add a logo property pointing to a square PNG
  • Organization schema missing url — point it at the canonical homepage
  • Consider adding contactPoint — helps appear in "contact us" rich results
  • Only partial contact info discoverable — consider adding a dedicated contact page or mailto/tel link

How consistently your brand appears across channels — shared link previews, structured data, favicon, contact info.

A+
Mixed Content
No mixed content detected — all resources use HTTPS.
PASS
No mixed content detected — all resources use HTTPS.
Info::
No mixed content detected — all resources use HTTPS
A
Open Graph
Open Graph tags are well configured for social sharing.
PASS
Open Graph tags are well configured for social sharing.
Critical::
og:image is not reachable
The og:image URL could not be fetched. Social platforms won't be able to display it.
Got: https://schalke04.de/content/uploads/2018/12/FC_Schalke_04_wir_leben_dich.jpg
Info::
og:title is short (8 characters)
Ideal length is 25–60 characters for social sharing previews.
Got: 8 chars Expected: 25–60 chars
URL: https://schalke04.de/content/uploads/2018/12/FC_Schalke_04_wir_leben_dich.jpg

The og:image URL could not be fetched. Social platforms won't be able to display it.

Why this matters

An unreachable og:image URL (404, DNS fail, slow timeout) means social platforms cache the failure and serve no image for hours.

Learn more ▾

Social platforms (Facebook, Twitter) cache OG metadata aggressively — including failed image fetches. A momentarily-broken og:image can leave your shares imageless for hours. Test og:image URLs in Facebook's Sharing Debugger to force re-cache after fixing.

Source: Open Graph Protocol / Facebook Sharing Debugger

URL: 8 chars

Ideal length is 25–60 characters for social sharing previews.

Expected: 25–60 chars
Why this matters

og:title very short — may render with awkward whitespace in social cards.

Source: Open Graph Protocol

Preview

schalke04.de

Homepage

Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tickets und vieles mehr.

Preview quality · Twitter/X A · 85/100
  • twitter:card — summary_large_image
  • twitter:title — falling back from og:title
  • twitter:description — falling back from og:description
  • twitter:image — falling back from og:image

SCHALKE04.DE

Homepage

Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tickets und vieles mehr.

Preview quality · Facebook A+ · 100/100
  • og:title — Homepage
  • og:description — Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tic...
  • og:image — https://schalke04.de/content/uploads/2018/12/FC_Schalke_04_wir_leben_dich.jpg
  • og:type — website
  • og:url — https://schalke04.de/
  • og:site_name — Fußball

Homepage

schalke04.de

Preview quality · LinkedIn A+ · 100/100
  • og:title — Homepage
  • og:description — Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tic...
  • og:image — https://schalke04.de/content/uploads/2018/12/FC_Schalke_04_wir_leben_dich.jpg

schalke04.de

Homepage

Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tickets und vieles mehr.

Preview quality · Slack A+ · 100/100
  • og:title — Homepage
  • og:description — Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tic...
  • og:image — https://schalke04.de/content/uploads/2018/12/FC_Schalke_04_wir_leben_dich.jpg

Social preview quality

Averaged across Twitter/X, Facebook, LinkedIn, and Slack.

A+ · 96/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title⚠———
twitter:description⚠———
twitter:image⚠———
A+
Open Graph / Twitter Card Depth
OG image dimensions and Twitter card configuration look healthy
PASS
OG image dimensions and Twitter card configuration look healthy
Info::
OG/Twitter Card depth is clean -- dimensions, card type, and inheritance all valid
A
Structured Data
1 JSON-LD block(s) found — structured data is well configured.
PASS
1 JSON-LD block(s) found — structured data is well configured.
Warning::
Missing required property "name" for Organization
The "name" property is required for the Organization schema type.
Info::
Missing recommended property "url" for Organization
Adding "url" can improve how search engines display your content.
Info::
Missing recommended property "logo" for Organization
Adding "logo" can improve how search engines display your content.
Info::
Missing recommended property "sameAs" for Organization
Adding "sameAs" can improve how search engines display your content.

The "name" property is required for the Organization schema type.

Why this matters

Schema markup missing required properties is silently rejected by Google — your structured data appears in source but never as a rich result.

Learn more ▾

Each schema.org type has required properties (Article needs headline + author + datePublished; Product needs name + offers; etc.). Missing them means Google's rich-result eligibility check fails. The Search Console Rich Results Test surfaces specific gaps. Fix the missing property; rich results re-appear within hours.

Source: Google Search Central / schema.org

Adding "url" can improve how search engines display your content.

Why this matters

Recommended schema properties unlock richer SERP layouts — without them you get the basic rich result instead of the enhanced one.

Learn more ▾

Recommended properties expand what Google can render. E.g., adding aggregateRating to Product unlocks star ratings; adding image to Article unlocks the image-card variant. Each recommended property is a direct SERP-real-estate gain.

Source: Google Search Central / schema.org

Adding "logo" can improve how search engines display your content.

Why this matters

Recommended schema properties unlock richer SERP layouts — without them you get the basic rich result instead of the enhanced one.

Learn more ▾

Recommended properties expand what Google can render. E.g., adding aggregateRating to Product unlocks star ratings; adding image to Article unlocks the image-card variant. Each recommended property is a direct SERP-real-estate gain.

Source: Google Search Central / schema.org

Adding "sameAs" can improve how search engines display your content.

Why this matters

Recommended schema properties unlock richer SERP layouts — without them you get the basic rich result instead of the enhanced one.

Learn more ▾

Recommended properties expand what Google can render. E.g., adding aggregateRating to Product unlocks star ratings; adding image to Article unlocks the image-card variant. Each recommended property is a direct SERP-real-estate gain.

Source: Google Search Central / schema.org

JSON-LD Blocks

Block 1 : Organization
2 properties Valid
Missing required property: name
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://schalke04.de/#organization",
      "name": "FC Gelsenkirchen-Schalke 04 e.V.",
      "url": "https://schalke04.de/",
      "sameAs": [],
      "logo": {
        "@type": "ImageObject",
        "@id": "https://schalke04.de/#logo",
        "inLanguage": "de-DE",
        "url": "https://storage.schalke04.de/sites/1/2026/05/schalke-logo.svg",
        "contentUrl": "https://storage.schalke04.de/sites/1/2026/05/schalke-logo.svg",
        "width": 226,
        "height": 226,
        "caption": "FC Gelsenkirchen-Schalke 04 e.V."
      },
      "image": {
        "@id": "https://schalke04.de/#logo"
      }
    },
    {
      "@type": "WebSite",
      "@id": "https://schalke04.de/#website",
      "url": "https://schalke04.de/",
      "name": "Fußball",
      "description": "FC Schalke 04",
      "publisher": {
        "@id": "https://schalke04.de/#organization"
      },
      "potentialAction": [
        {
          "@type": "SearchAction",
          "target": {
            "@type": "EntryPoint",
            "urlTemplate": "https://schalke04.de/?s={search_term_string}"
          },
          "query-input": "required name=search_term_string"
        }
      ],
      "inLanguage": "de-DE"
    },
    {
      "@type": "ImageObject",
      "@id": "https://schalke04.de/#primaryimage",
      "inLanguage": "de-DE",
      "url": "",
      "contentUrl": ""
    },
    {
      "@type": "WebPage",
      "@id": "https://schalke04.de/#webpage",
      "url": "https://schalke04.de/",
      "name": "FC Gelsenkirchen-Schalke 04 e.V. | Offizielle Website vom S04",
      "isPartOf": {
        "@id": "https://schalke04.de/#website"
      },
      "about": {
        "@id": "https://schalke04.de/#organization"
      },
      "datePublished": "2017-09-20T08:16:20+00:00",
      "dateModified": "2026-07-31T14:29:10+00:00",
      "description": "Alles rund um den FC Schalke 04: Neuigkeiten aus erster Hand, ausführliche Informationen zu Spielen und Spielern, Tickets und vieles mehr.",
      "breadcrumb": {
        "@id": "https://schalke04.de/#breadcrumb"
      },
      "inLanguage": "de-DE",
      "potentialAction": [
        {
          "@type": "ReadAction",
          "target": [
            "https://schalke04.de/"
          ]
        }
      ]
    },
    {
      "@type": "BreadcrumbList",
      "@id": "https://schalke04.de/#breadcrumb",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Home"
        }
      ]
    }
  ]
}
A+
Rich Results Eligibility
1 JSON-LD block(s) declaring 5 schema type(s)
PASS
1 JSON-LD block(s) declaring 5 schema type(s)
Info::
SiteLinks Search Box markup detected
The page declares a `WebSite` schema with a `potentialAction` of `SearchAction`. This makes the homepage eligible for Google's in-SERP search box -- a high-visibility SERP feature for branded queries.
Info::
5 rich-result schema type(s) declared
Inventory of structured-data types on the page (each may unlock a different SERP feature): BreadcrumbList, ImageObject, Organization, WebPage, WebSite Search engines decide whether to render rich results based on content quality + page-level signals; declaring the schema is necessary but not sufficient.
A+
Autoplay Media
No autoplay media on the page
PASS
No autoplay media on the page
Info::
No autoplay media on the page
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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