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https://duolingo.com

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· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
94
GRADE
A
FIX
0
REVIEW
2
PASS
3
INFO
0
Checks
5
3 PASS 2 REVIEW
C
Open Graph
Action
Open Graph tags are partially configured — some improvements recommended.
REVIEW
Open Graph tags are partially configured — some improvements recommended.
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://www.duolingo.com/images/facebook/duo-08523a2.jpg
Warning::
Missing og:description
The og:description tag controls the description in social sharing previews.
URL: https://www.duolingo.com/images/facebook/duo-08523a2.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

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

Preview

duolingo.com

Learn a language for free

Free, fun, and effective courses in languages and more. Learn with quick, science-based lessons personalized to you.

Preview quality · Twitter/X A+ · 100/100
  • twitter:card — summary
  • twitter:title — Duolingo - Learn a language for free @duolingo
  • twitter:description — Free, fun, and effective courses in languages and more. Learn with quick, science-based lessons personalized to you.
  • twitter:image — https://www.duolingo.com/images/facebook/duo200.png

DUOLINGO.COM

Learn a language for free

Free, fun, and effective courses in languages and more. Learn with quick, science-based lessons personalized to you.

Preview quality · Facebook A+ · 95/100
  • og:title — Learn a language for free
  • og:description — falling back from <meta name=description>
  • og:image — https://www.duolingo.com/images/facebook/duo-08523a2.jpg
  • og:type — website
  • og:url — https://www.duolingo.com/
  • og:site_name — Duolingo

Learn a language for free

duolingo.com

Preview quality · LinkedIn A+ · 95/100
  • og:title — Learn a language for free
  • og:description — falling back from <meta name=description>
  • og:image — https://www.duolingo.com/images/facebook/duo-08523a2.jpg

duolingo.com

Learn a language for free

Free, fun, and effective courses in languages and more. Learn with quick, science-based lessons personalized to you.

Preview quality · Slack A+ · 95/100
  • og:title — Learn a language for free
  • og:description — falling back from og:description
  • og:image — https://www.duolingo.com/images/facebook/duo-08523a2.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———
B
Brand Presence
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.

B

71/100

Site name appears as

Page titlebadge-app-store
og:site_nameDuolingo
twitter:site@duolingo
Organization.nameDuolingo

Inconsistent — names differ across channels

Brand assets

Favicon

12/15

covers apple-touch-icon

Social share image

20/20

og:image + twitter:image set

Meta completeness

14/20

Organization schema

15/15

has name, logo + url

Contact info discoverable

5/10

contact page

Findings

  • Brand name differs across channels — users see inconsistent identity
  • Add an apple-touch-icon and at least two PNG sizes (32x32 + 192x192)
  • 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+
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.

JSON-LD Blocks

Block 1 : Organization
6 properties Valid
{
  "@type": "Organization",
  "logo": "https://d35aaqx5ub95lt.cloudfront.net/images/f2a2e608c854822ad2563a09595e7827.png",
  "name": "Duolingo",
  "sameAs": [
    "https://www.youtube.com/duolingo",
    "https://twitter.com/duolingo",
    "https://www.facebook.com/duolingo",
    "https://www.linkedin.com/company/duolingo/",
    "https://www.instagram.com/duolingo/",
    "https://www.twitch.tv/Duolingo"
  ],
  "url": "https://www.duolingo.com/",
  "@context": "http://schema.org"
}
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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