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· 9 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
94
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Checks
9
6 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

39/100

Site name appears as

Page titleMarkdown Online
og:site_name—
twitter:site—
Organization.name—

Consistent

Brand assets

Favicon

15/15

covers multiple sizes + apple-touch-icon

Social share image

0/20

Meta completeness

14/20

Organization schema

0/15

Contact info discoverable

5/10

contact page

Findings

  • Missing brand name in: og:site_name, twitter:site, Organization.name
  • No social share image — shared links render as bare URLs
  • 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.

C
Open Graph
Action
Open Graph tags are partially configured — some improvements recommended.
REVIEW
Open Graph tags are partially configured — some improvements recommended.
Warning::
Missing og:image
The og:image tag provides a preview image for social sharing.
Info::
og:title is long (67 characters)
Titles over 60 characters may be truncated in social sharing previews.
Got: 67 chars Expected: 25–60 chars
Info::
Missing og:type
The og:type tag helps social platforms categorize the content.
Info::
Missing og:site_name
The og:site_name tag displays the website name in social previews.

The og:image tag provides a preview image for social sharing.

Why this matters

No og:image means social shares are imageless — measurably less engaging than image-cards across every major platform.

Learn more ▾

Twitter, Facebook, and LinkedIn all use og:image (or twitter:image as a fallback) for share-card thumbnails. Without one, the post renders as a text-only card. A 1200x630px image (Twitter's preferred size) covers all platforms.

Source: Open Graph Protocol

URL: 67 chars

Titles over 60 characters may be truncated in social sharing previews.

Expected: 25–60 chars
Why this matters

og:title borderline-too-long — Facebook/LinkedIn may truncate. Aim for ~60-70 characters max.

Source: Open Graph Protocol

The og:type tag helps social platforms categorize the content.

Why this matters

Default og:type is 'website' but the right value (article, product, profile) unlocks richer metadata fields and higher engagement.

Learn more ▾

og:type controls which other og: fields a platform respects. og:type=article enables og:article:published_time, author, and section — surfaced in news cards. og:type=product enables price/availability fields surfaced by Pinterest and shopping integrations. Default 'website' silently disables those.

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

No image set

markdownonline.app

Markdown Online - Private Markdown Editor for Docs, README & Export

Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private by default.

Preview quality · Twitter/X C · 65/100
  • twitter:card — summary_large_image
  • twitter:title — Markdown Online - Private Markdown Editor for Docs, README & Export
  • twitter:description — Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private b...
  • twitter:image — Add twitter:image — preview card without an image looks broken

  • No preview image for Twitter/X

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

No image set

MARKDOWNONLINE.APP

Markdown Online - Private Markdown Editor for Docs, README & Export

Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private by default.

Preview quality · Facebook F · 30/100

Title will be truncated (67 chars / 60 max)

  • og:title — Markdown Online - Private Markdown Editor for Docs, README & Export
  • og:description — Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private b...
  • og:image — Add og:image — preview card without an image looks broken
  • og:type — Add og:type — Recommended — tells Facebook the content category
  • og:url — https://markdownonline.app/
  • og:site_name — Add og:site_name — Recommended — site-level brand line in the preview

  • Title will be truncated on Facebook (67 chars, max 60)

    → Shorten og:title to ≤60 characters

  • No preview image for Facebook

    → Add og:image (recommended 1200×630)

No image set

Markdown Online - Private Markdown Editor for Docs, README & Export

markdownonline.app

Preview quality · LinkedIn C · 65/100
  • og:title — Markdown Online - Private Markdown Editor for Docs, README & Export
  • og:description — Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private b...
  • og:image — Add og:image — preview card without an image looks broken

  • No preview image for LinkedIn

    → Add og:image (recommended 1200×627)

markdownonline.app

Markdown Online - Private Markdown Editor for Docs, README & Export

Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private by default.

Preview quality · Slack B · 80/100
  • og:title — Markdown Online - Private Markdown Editor for Docs, README & Export
  • og:description — Write Markdown in your browser, preview instantly, and export to HTML, PDF, or Word. No signup, no install, private b...
  • 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.

D · 60/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title———
twitter:description———
twitter:image———
B
Image Optimization
2 issues found across 1 images
REVIEW
2 issues found across 1 images
Warning::
1 images missing explicit width/height
Images without dimensions cause layout shifts (CLS). Set explicit width and height attributes.
Info::
1 below-fold images missing loading="lazy"
Lazy loading defers below-fold images, reducing initial page weight.
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 / Twitter Card Depth
OG image dimensions and Twitter card configuration look healthy
PASS
OG image dimensions and Twitter card configuration look healthy
Info::
OG/Twitter Card depth is clean -- dimensions, card type, and inheritance all valid
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.
Info::
Custom type "SoftwareApplication" — unable to validate specific properties

JSON-LD Blocks

Block 1 : SoftwareApplication
9 properties Valid
{
  "@context": "https://schema.org",
  "@type": "SoftwareApplication",
  "name": "Markdown Online",
  "url": "https://markdownonline.app",
  "applicationCategory": "DeveloperApplication",
  "operatingSystem": "Any",
  "offers": {
    "@type": "Offer",
    "price": "0",
    "priceCurrency": "USD"
  },
  "description": "Free online Markdown editor with live preview, export options, and auto-save. No signup required.",
  "featureList": [
    "Live Markdown preview",
    "Export to HTML and Markdown",
    "Auto-save to browser storage",
    "Dark mode support",
    "Mobile responsive"
  ]
}
A+
Rich Results Eligibility
1 JSON-LD block(s) declaring 1 schema type(s)
PASS
1 JSON-LD block(s) declaring 1 schema type(s)
Info::
1 rich-result schema type(s) declared
Inventory of structured-data types on the page (each may unlock a different SERP feature): SoftwareApplication Search engines decide whether to render rich results based on content quality + page-level signals; declaring the schema is necessary but not sufficient.
A+
Autoplay Media
No autoplay media on the page
PASS
No autoplay media on the page
Info::
No autoplay media on the page
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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