G.H. Mumm
(https://mumm.com) 📸 Data Snapshot: May 31, 2026Inspect the JSON-LD. Is there an Organization or Person schema, and does it carry sameAs links to real external profiles (LinkedIn, socials)? Missing schema or no identity declaration signals an anonymous entity.
There is a minor gap between the expert claims and the technical schema. While Yann Munier is named as the Chef de Caves (Cellar Master) on the French version of the site, there is no corresponding Person schema or sameAs links to verify his professional footprint. The schema_json focuses on WebPage and WebSite objects but misses the opportunity to link the brand to its historical founders or current experts through structured data, which would solidify its authority.
The site makes bold claims about being an innovation leader, particularly with the space mission, which it backs up with specific details about the Ax-4 mission and the iF Design Award. The motto Only the Best is a generic performance claim, but it is framed as a historical motto rather than a contemporary KPI. Most performance claims regarding vineyard classification (160 classified as Grand Cru) are technical facts rather than marketing exaggerations.
Identity & Authority is read from the structured data first: whether the site declares who it is in machine-readable schema, with verifiable identity links. Below is the schema captured per page, then the external proof links that support (or fail to support) that identity.
🔗 Identity & Technical Layer — schema JSON-LD: identity chains, entity gaps
Homepage schema
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.mumm.com/en-ww/",
"url": "https://www.mumm.com/en-ww/",
"name": "G.H.Mumm Champagne House, Reims",
"isPartOf": {
"@id": "https://www.mumm.com/en-ww/#website"
},
"primaryImageOfPage": {
"@id": "https://www.mumm.com/en-ww/#primaryimage"
},
"image": {
"@id": "https://www.mumm.com/en-ww/#primaryimage"
},
"thumbnailUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"datePublished": "2020-03-11T18:28:46+00:00",
"dateModified": "2026-05-12T09:35:11+00:00",
"description": "Located in Reims and rooted in the heart of the wine-growing region of Champagne since 1827, the G.H.Mumm champagne House has developed excellence, passion for its terroir and innovation since its creation.",
"inLanguage": "en",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.mumm.com/en-ww/"
]
}
]
},
{
"@type": "ImageObject",
"inLanguage": "en",
"@id": "https://www.mumm.com/en-ww/#primaryimage",
"url": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"contentUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"width": 1272,
"height": 600
},
{
"@type": "WebSite",
"@id": "https://www.mumm.com/en-ww/#website",
"url": "https://www.mumm.com/en-ww/",
"name": "G.H.Mumm",
"description": "G.H.Mumm champagne house",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.mumm.com/en-ww/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "en"
}
]
}
/en-ww/
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.mumm.com/en-ww/",
"url": "https://www.mumm.com/en-ww/",
"name": "G.H.Mumm Champagne House, Reims",
"isPartOf": {
"@id": "https://www.mumm.com/en-ww/#website"
},
"primaryImageOfPage": {
"@id": "https://www.mumm.com/en-ww/#primaryimage"
},
"image": {
"@id": "https://www.mumm.com/en-ww/#primaryimage"
},
"thumbnailUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"datePublished": "2020-03-11T18:28:46+00:00",
"dateModified": "2026-05-12T09:35:11+00:00",
"description": "Located in Reims and rooted in the heart of the wine-growing region of Champagne since 1827, the G.H.Mumm champagne House has developed excellence, passion for its terroir and innovation since its creation.",
"inLanguage": "en",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.mumm.com/en-ww/"
]
}
]
},
{
"@type": "ImageObject",
"inLanguage": "en",
"@id": "https://www.mumm.com/en-ww/#primaryimage",
"url": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"contentUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"width": 1272,
"height": 600
},
{
"@type": "WebSite",
"@id": "https://www.mumm.com/en-ww/#website",
"url": "https://www.mumm.com/en-ww/",
"name": "G.H.Mumm",
"description": "G.H.Mumm champagne house",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.mumm.com/en-ww/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "en"
}
]
}
/en-ww/book-a-visit/
[
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.mumm.com/en-ww/book-a-visit/",
"url": "https://www.mumm.com/en-ww/book-a-visit/",
"name": "Champagne cellar tour in Reims — Mumm Champagne House",
"isPartOf": {
"@id": "https://www.mumm.com/en-ww/#website"
},
"datePublished": "2021-04-30T15:42:20+00:00",
"dateModified": "2026-01-23T09:58:15+00:00",
"description": "Spread across nearly 25 kilometers in the heart of the city of Reims, Mumm’s cellars are home to almost 200 years of history, expertise and passion. A storied heritage to be discovered in an unforgettable guided and immersive tour.",
"inLanguage": "en",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.mumm.com/en-ww/book-a-visit/"
]
}
]
},
{
"@type": "WebSite",
"@id": "https://www.mumm.com/en-ww/#website",
"url": "https://www.mumm.com/en-ww/",
"name": "G.H.Mumm",
"description": "G.H.Mumm champagne house",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.mumm.com/en-ww/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "en"
}
]
},
{
"@context": "https://schema.org",
"@type": "BreadcrumbList",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "Accueil",
"item": "https://www.mumm.com/en-ww/"
},
{
"@type": "ListItem",
"position": 2,
"name": "Book a visit",
"item": "https://www.mumm.com/en-ww/book-a-visit/"
}
]
}
]
/fr-fr/
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://www.mumm.com/fr-fr/",
"url": "https://www.mumm.com/fr-fr/",
"name": "Maison de champagne à Reims G.H. Mumm",
"isPartOf": {
"@id": "https://www.mumm.com/fr-fr/#website"
},
"primaryImageOfPage": {
"@id": "https://www.mumm.com/fr-fr/#primaryimage"
},
"image": {
"@id": "https://www.mumm.com/fr-fr/#primaryimage"
},
"thumbnailUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"datePublished": "2020-03-11T18:28:46+00:00",
"dateModified": "2026-05-20T14:45:02+00:00",
"description": "Située à Reims et ancrée au cœur du vignoble champenois depuis 1827, la Maison de champagne G.H. Mumm cultive depuis sa création la qualité, la passion du terroir et de l’innovation.",
"inLanguage": "fr-FR",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://www.mumm.com/fr-fr/"
]
}
]
},
{
"@type": "ImageObject",
"inLanguage": "fr-FR",
"@id": "https://www.mumm.com/fr-fr/#primaryimage",
"url": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"contentUrl": "https://www.mumm.com/wp-content/uploads/2020/12/visit_ghmumm.jpg",
"width": 1272,
"height": 600
},
{
"@type": "WebSite",
"@id": "https://www.mumm.com/fr-fr/#website",
"url": "https://www.mumm.com/fr-fr/",
"name": "G.H.Mumm",
"description": "G.H.Mumm Champagne House",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://www.mumm.com/fr-fr/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "fr-FR"
}
]
}
🛡️ Trust Signals — external proof links that back the declared identity
| Page | Reviews | Proof links |
|---|---|---|
| / (home) | 7 | 2 |
| /en-ww/ | 7 | 2 |
| /en-ww/book-a-visit/ | 3 | 3 |
| /fr-fr/ | 5 | 2 |
This page presents a snapshot of public data from G.H. Mumm, captured on May 31, 2026, to show how machine logic reads Identity & Authority signals into an AI reputation evaluation.
Purpose: This data is presented under “Fair Use” for the purpose of independent signal analysis, allowing readers to see the raw signals behind the reputation score.
Notice to G.H. Mumm: This analysis is part of a non-adversarial audit conducted by 1 Euro SEO. The results are intended as professional feedback to help improve any website’s machine-readability and authority signals. The evaluation is free, and any company can request a fresh audit at any time.
Any company can use the insights for free and improve its voice. When a company has updated its content, it can always submit a new audit request, which will be reflected in a new current score.
To all users: You are encouraged to visit the live site at https://mumm.com to view the most current version of its content and see directly what this company is about and what it offers.