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

Content

· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
73
GRADE
C
FIX
2
REVIEW
2
PASS
1
INFO
0
Checks
5
1 PASS 2 REVIEW 2 FIX
F
Open Graph
Action
No Open Graph tags found — social sharing previews will be generic.
FIX
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.

Without og:title, og:description, and og:image, social media platforms will generate a generic preview when your page is shared.

Why this matters

Without Open Graph tags, social shares show a broken or empty preview card.

Learn more ▾

When someone shares your URL on Facebook, LinkedIn, Slack, iMessage, or any modern chat app, the preview comes from <meta property="og:*"> tags. Without them you get either no card or whatever fragment the social platform guesses — usually unflattering. The four core og: tags (title, description, image, url) cover what every major platform actually reads.

Source: Open Graph Protocol

Preview

No image set

uni-leipzig.de

No title set

No description

Preview quality · Twitter/X D · 50/100

Description will be truncated (257 chars / 200 max)

  • twitter:card — summary
  • twitter:title — falling back from <title>
  • twitter:description — falling back from <meta name=description>
  • twitter:image — Add twitter:image — preview card without an image looks broken

  • Description will be truncated on Twitter/X (257 chars, max 200)

    → Tighten the description to ≤200 characters

  • No preview image for Twitter/X

    → Add og:image or twitter:image (≥300×157 for summary_large_image)

No image set

UNI-LEIPZIG.DE

No title set

No description

Preview quality · Facebook F · 20/100

Description will be truncated (257 chars / 155 max)

  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — Add og:image — preview card without an image looks broken
  • og:type — website
  • og:url — Add og:url — Recommended — canonical URL for the share
  • og:site_name — Add og:site_name — Recommended — site-level brand line in the preview

  • Description will be truncated on Facebook (257 chars, max 155)

    → Tighten og:description to ≤155 characters

  • No preview image for Facebook

    → Add og:image (recommended 1200×630)

No image set

No title set

uni-leipzig.de

Preview quality · LinkedIn D · 50/100

Description will be truncated (257 chars / 150 max)

  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — Add og:image — preview card without an image looks broken

  • Description will be truncated on LinkedIn (257 chars, max 150)

    → Tighten og:description to ≤150 characters

  • No preview image for LinkedIn

    → Add og:image (recommended 1200×627)

uni-leipzig.de

No title set

No description

Preview quality · Slack C · 70/100
  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — Add og:image — preview card without an image looks broken

  • No preview image — Slack unfurl will be text-only

    → Add og:image or twitter:image

Social preview quality

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

F · 47/100
FieldTwitter/XFacebookLinkedInSlack
og:title⚠⚠⚠
og:description⚠⚠⚠
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title⚠———
twitter:description⚠———
twitter:image———
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

30/100

Site name appears as

Page titleUniversität Leipzig: Universität Leipzig
og:site_name—
twitter:site—
Organization.name—

Consistent

Brand assets

Favicon

12/15

covers apple-touch-icon

Social share image

0/20

Meta completeness

8/20

Organization schema

0/15

Contact info discoverable

5/10

mailto link

Findings

  • Missing brand name in: og:site_name, twitter:site, Organization.name
  • No social share image — shared links render as bare URLs
  • Add an apple-touch-icon and at least two PNG sizes (32x32 + 192x192)
  • og:title missing
  • og:image missing
  • No Organization schema — Google can't render your logo in the knowledge panel
  • 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.

B
Structured Data
1 JSON-LD block(s) found — some improvements recommended.
REVIEW
1 JSON-LD block(s) found — some improvements recommended.
Warning::
Missing or invalid @context in block #1
The @context should be "https://schema.org" for search engines to recognize the data.
Got: http://schema.org/ Expected: https://schema.org
Info::
Custom type "CollegeOrUniversity" — unable to validate specific properties
URL: http://schema.org/

The @context should be "https://schema.org" for search engines to recognize the data.

Expected: https://schema.org
Why this matters

JSON-LD without @context is invalid structured data — Google ignores the entire block.

Learn more ▾

@context must be 'https://schema.org' (or the schema-specific URL). Without it, the block isn't parseable as schema.org JSON-LD and Google skips it. Most schema generators handle this; manual edits sometimes drop the field.

Source: JSON-LD spec / schema.org

JSON-LD Blocks

Block 1 : CollegeOrUniversity
8 properties Valid
Missing or invalid @context
{
  "@context": "http://schema.org/",
  "@type": "CollegeOrUniversity",
  "name": "Universität Leipzig",
  "url": "https://www.uni-leipzig.de/",
  "logo": "https://www.uni-leipzig.de/_assets/89f4369f29e16b23ff4835f5790afe07/Images/Icons/uni_leipzig_logo.svg",
  "sameAs": [
    "https://www.facebook.com/unileipzig/",
    "https://twitter.com/unileipzig",
    "https://www.instagram.com/unileipzig/",
    "https://www.youtube.com/user/UniversityofLeipzig",
    "https://www.linkedin.com/school/22593/",
    "https://wisskomm.social/@unileipzig"
  ],
  "address": {
    "@type": "PostalAddress",
    "streetAddress": "Ritterstraße 26",
    "addressLocality": "Leipzig",
    "postalCode": "04109",
    "addressCountry": "DE"
  },
  "telephone": "+4934197108"
}
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
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback