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· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
80
GRADE
B
FIX
3
REVIEW
0
PASS
2
INFO
0
Checks
5
2 PASS 3 FIX
D
Open Graph
Action
Open Graph tags need attention — social sharing previews may be incomplete.
FIX
Open Graph tags need attention — social sharing previews may be incomplete.
Warning::
Missing og:title
The og:title tag controls the title shown in social sharing previews.
Warning::
Missing og:description
The og:description tag controls the description in social sharing previews.
Info::
Missing og:url
The og:url tag specifies the canonical URL for the shared content.
Info::
Missing og:site_name
The og:site_name tag displays the website name in social previews.

The og:title tag controls the title shown in social sharing previews.

Why this matters

Without og:title, social shares fall back to the <title> tag — usually awkwardly truncated or branded for SEO not social.

Learn more

og:title controls what appears as the headline in social-share cards (Twitter, Facebook, LinkedIn, Slack, iMessage). When omitted, platforms fall back to <title>, which is usually optimized for SEO (longer, brand-suffixed) and reads badly in social context. A 50-60-character og:title gives a clean preview.

Source: Open Graph Protocol

The og:description tag controls the description in social sharing previews.

Why this matters

No og:description means social cards either show no subtitle or scrape the first paragraph — usually unflattering.

Learn more

Without og:description, social platforms either render no subtitle or pull whatever text appears first on the page. The first paragraph is rarely written for share-card context. A purpose-written 150-200 character og:description gives a polished card.

Source: Open Graph Protocol

The og:url tag specifies the canonical URL for the shared content.

Why this matters

Without og:url, social platforms infer the canonical URL — often picking a tracking-param variant that pollutes share counts.

Learn more

og:url tells the social platform which URL to count this share against. Without it, platforms use the literal URL the user pasted (which may include utm_* parameters, ref codes, etc.). Setting og:url to the canonical form keeps share-count attribution clean.

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

Preview

unesco.org

No title set

No description

Preview quality · Twitter/X B · 80/100

Title will be truncated (93 chars / 70 max)

Description will be truncated (206 chars / 200 max)

  • twitter:card — summary_large_image
  • twitter:title — falling back from <title>
  • twitter:description — falling back from <meta name=description>
  • twitter:image — https://www.unesco.org/sites/default/files/styles/best_image/public/2026-03/_DER6481_0%202.png.webp?itok=a4oGn_-Y
  • Title will be truncated on Twitter/X (93 chars, max 70)

    → Shorten the title to ≤70 characters

  • Description will be truncated on Twitter/X (206 chars, max 200)

    → Tighten the description to ≤200 characters

UNESCO.ORG

No title set

No description

Preview quality · Facebook D · 50/100

Title will be truncated (93 chars / 60 max)

Description will be truncated (206 chars / 155 max)

  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — https://www.unesco.org/sites/default/files/styles/best_image/public/2026-03/_DER6481_0%202.png.webp?itok=a4oGn_-Y
  • 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
  • Title will be truncated on Facebook (93 chars, max 60)

    → Shorten og:title to ≤60 characters

  • Description will be truncated on Facebook (206 chars, max 155)

    → Tighten og:description to ≤155 characters

No title set

unesco.org

Preview quality · LinkedIn A · 85/100

Description will be truncated (206 chars / 150 max)

  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — https://www.unesco.org/sites/default/files/styles/best_image/public/2026-03/_DER6481_0%202.png.webp?itok=a4oGn_-Y
  • Description will be truncated on LinkedIn (206 chars, max 150)

    → Tighten og:description to ≤150 characters

unesco.org

No title set

No description

Preview quality · Slack A · 90/100
  • og:title — falling back from <title>
  • og:description — falling back from <meta name=description>
  • og:image — https://www.unesco.org/sites/default/files/styles/best_image/public/2026-03/_DER6481_0%202.png.webp?itok=a4oGn_-Y

Social preview quality

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

B · 76/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card
twitter:title
twitter:description
twitter:image
D
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.

D

45/100

Site name appears as

Page titleUNESCO : Building Peace through Education, Science and Culture, communication and information
og:site_name
twitter:site
Organization.name

Consistent

Brand assets

Favicon

12/15

covers apple-touch-icon + SVG

Social share image

20/20

og:image + twitter:image set

Meta completeness

8/20

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 an apple-touch-icon and at least two PNG sizes (32x32 + 192x192)
  • og:title 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.

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+
Structured Data
2 JSON-LD block(s) found — structured data is well configured.
PASS
2 JSON-LD block(s) found — structured data is well configured.
Info::
2 blocks of custom type "VideoObject" — unable to validate specific properties
Info::
2 JSON-LD blocks found

JSON-LD Blocks

Block 1 : VideoObject
8 properties Valid
{
  "@context": "https://schema.org",
  "@type": "VideoObject",
  "name": "GEM Report 2026",
  "description": null,
  "thumbnailUrl": "https://www.unesco.org/sites/default/files/oembed_thumbnails/CAhwMecdVLC7K99R9vddVlnhTpsjlmTOKSD5ZtJRDGY.jpg",
  "uploadDate": "2026-03-25T10:29:23+01:00",
  "contentUrl": "https://www.youtube.com/watch?v=L3JlEXcM04Y",
  "embedUrl": "https://www.youtube.com/watch?v=L3JlEXcM04Y"
}
Block 2 : VideoObject
8 properties Valid
{
  "@context": "https://schema.org",
  "@type": "VideoObject",
  "name": "What does UNESCO really do?",
  "description": null,
  "thumbnailUrl": "https://www.unesco.org/sites/default/files/oembed_thumbnails/bE30k_tgi7lRmvhE06BYu8lxowqhWcuOwgvzHwnX-E8.jpg",
  "uploadDate": "2025-06-24T10:51:09+02:00",
  "contentUrl": "https://www.youtube.com/watch?v=1Pvlijgmyzc",
  "embedUrl": "https://www.youtube.com/watch?v=1Pvlijgmyzc"
}
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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