Skip to content
https://uni-hamburg.de

Content

· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
2
PASS
2
INFO
0
Checks
5
2 PASS 2 REVIEW 1 FIX
F
Brand Presence
Action
Site-name consistency, favicon, social image, meta tags, schema, and contact signals
FIX

Brand Presence

Partial brand coverage — a few channels are missing brand signals.

F

33/100

Site name appears as

Page titleUHH : Universität Hamburg
og:site_name—
twitter:site—
Organization.name—

Consistent

Brand assets

Favicon

0/15

Social share image

14/20

og:image set; twitter:image missing

Meta completeness

14/20

Organization schema

0/15

Contact info discoverable

0/10

no contact info discoverable

Findings

  • Missing brand name in: og:site_name, twitter:site, Organization.name
  • Add twitter:image — Twitter falls back to og:image only when it's larger than 300×157
  • No favicon link tags detected — browsers fall back to the generic globe
  • twitter:card missing
  • No Organization schema — Google can't render your logo in the knowledge panel
  • No discoverable contact info — trust signal is weak, legal risk is higher in regulated regions

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

C
Structured Data
Action
No structured data (JSON-LD) found.
REVIEW
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.

Adding structured data helps search engines understand your content and can enable rich results.

Why this matters

Without schema.org markup, your pages can't appear as rich results (stars, FAQs, recipes) in search.

Learn more ▾

Structured data is what unlocks rich snippets — review stars, FAQ accordions, recipe cards, breadcrumbs, etc. — that take up more SERP space and dramatically improve click-through. The schema.org vocabulary is well-documented and JSON-LD is the easiest format.

Source: Google Search Central / schema.org

No structured data found

Structured data (JSON-LD) helps search engines understand your content better. Adding it can improve your search result appearance.

Common types include:

  • WebSite — your site identity and search box
  • Organization — your company information
  • Article — blog posts and news articles
  • Product — e-commerce product pages
  • BreadcrumbList — navigation paths
Learn more at schema.org
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.
Info::
og:title is short (19 characters)
Ideal length is 25–60 characters for social sharing previews.
Got: 19 chars Expected: 25–60 chars
Info::
og:description is long (250 characters)
Descriptions over 200 characters may be truncated in social sharing previews.
Got: 250 chars Expected: 55–200 chars
Info::
Missing og:site_name
The og:site_name tag displays the website name in social previews.
Info::
Missing twitter:card
Without twitter:card, Twitter falls back to Open Graph tags. Adding it gives you more control.
URL: 19 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

URL: 250 chars

Descriptions over 200 characters may be truncated in social sharing previews.

Expected: 55–200 chars
Why this matters

og:description borderline-too-long — social platforms truncate around ~200 chars.

Source: Open Graph Protocol

The og:site_name tag displays the website name in social previews.

Why this matters

Without og:site_name, social cards omit the brand attribution — users see the post but not who published it.

Learn more ▾

og:site_name appears in the social card chrome (above the title in Facebook/LinkedIn previews). Without it, posts read as anonymous URLs. Set it to your brand name to get free attribution on every share.

Source: Open Graph Protocol

Without twitter:card, Twitter falls back to Open Graph tags. Adding it gives you more control.

Why this matters

Without twitter:card, Twitter renders posts as plain text — no preview image, no structured layout.

Learn more ▾

Twitter requires `<meta name="twitter:card" content="summary_large_image">` (or summary) to render share-cards at all. Without it, links appear as raw text and engagement plummets vs cards. Twitter also falls back to og:image if twitter:image isn't set, so configure both.

Source: Twitter Developer Platform

Preview

uni-hamburg.de

Universität Hamburg

Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Norddeutschlands. Als eine der leistungsstärksten Universitäten in Deutschland vereint sie ein umfangreiches Lehrangebot mit exzellenter Fo

Preview quality · Twitter/X F · 45/100

Description will be truncated (255 chars / 200 max)

  • twitter:card — Add <meta name="twitter:card" content="summary_large_image">
  • twitter:title — falling back from og:title
  • twitter:description — falling back from og:description
  • twitter:image — falling back from og:image

  • twitter:card is missing

    → Add <meta name="twitter:card" content="summary_large_image">

  • Description will be truncated on Twitter/X (255 chars, max 200)

    → Tighten the description to ≤200 characters

UNI-HAMBURG.DE

Universität Hamburg

Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Norddeutschlands. Als eine der leistungsstärksten Universitäten in Deutschland vereint sie ein umfangreiches Lehrangebot mit exzellenter Fo

Preview quality · Facebook B · 80/100

Description will be truncated (255 chars / 155 max)

  • og:title — Universität Hamburg
  • og:description — Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Nordde...
  • og:image — https://www.uni-hamburg.de/6694510/hauptgebaeude1200x300-ef680e585b2db44e8424982970ddc82e1345bef1.jpg
  • og:type — website
  • og:url — https://www.uni-hamburg.de/
  • og:site_name — Add og:site_name — Recommended — site-level brand line in the preview

  • Description will be truncated on Facebook (255 chars, max 155)

    → Tighten og:description to ≤155 characters

Universität Hamburg

uni-hamburg.de

Preview quality · LinkedIn A+ · 95/100

Description will be truncated (255 chars / 150 max)

  • og:title — Universität Hamburg
  • og:description — Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Nordde...
  • og:image — https://www.uni-hamburg.de/6694510/hauptgebaeude1200x300-ef680e585b2db44e8424982970ddc82e1345bef1.jpg

  • Description will be truncated on LinkedIn (255 chars, max 150)

    → Tighten og:description to ≤150 characters

uni-hamburg.de

Universität Hamburg

Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Norddeutschlands. Als eine der leistungsstärksten Universitäten in Deutschland vereint sie ein umfangreiches Lehrangebot mit exzellenter Fo

Preview quality · Slack A+ · 100/100
  • og:title — Universität Hamburg
  • og:description — Die Universität Hamburg ist mit mehr als 42.000 Studierenden die größte Forschungs- und Ausbildungseinrichtung Nordde...
  • og:image — https://www.uni-hamburg.de/6694510/hauptgebaeude1200x300-ef680e585b2db44e8424982970ddc82e1345bef1.jpg

Social preview quality

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

B · 80/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title⚠———
twitter:description⚠———
twitter:image⚠———
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback