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· 5 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
96
GRADE
A
FIX
0
REVIEW
2
PASS
3
INFO
0
Checks
5
3 PASS 2 REVIEW
B
Open Graph
Open Graph tags are partially configured — some improvements recommended.
REVIEW
Open Graph tags are partially configured — some improvements recommended.
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:url
The og:url tag specifies the canonical URL for the shared content.
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.
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: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: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

hackmd.io

HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing

HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple, straightforward, and fun.

Preview quality · Twitter/X A+ · 100/100
  • twitter:card — summary_large_image
  • twitter:title — HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing
  • twitter:description — HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple,...
  • twitter:image — https://hackmd.io/cover.png

HACKMD.IO

HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing

HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple, straightforward, and fun.

Preview quality · Facebook D · 50/100

Title will be truncated (67 chars / 60 max)

  • og:title — HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing
  • og:description — HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple,...
  • og:image — https://hackmd.io/cover.png
  • og:type — Add og:type — Recommended — tells Facebook the content category
  • 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 (67 chars, max 60)

    → Shorten og:title to ≤60 characters

HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing

hackmd.io

Preview quality · LinkedIn A+ · 100/100
  • og:title — HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing
  • og:description — HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple,...
  • og:image — https://hackmd.io/cover.png

hackmd.io

HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing

HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple, straightforward, and fun.

Preview quality · Slack A+ · 100/100
  • og:title — HackMD: Your Collaborative Markdown Workspace for Knowledge Sharing
  • og:description — HackMD gives you a real-time Markdown editor for collaborative work. Working with Markdown files in HackMD is simple,...
  • og:image — https://hackmd.io/cover.png

Social preview quality

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

A · 87/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title———
twitter:description———
twitter:image———
C
Brand Presence
Action
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.

C

68/100

Site name appears as

Page titleHackMD: Your Collaborative Markdown Workspace for Knowledge Sharing
og:site_name—
twitter:site—
Organization.nameHackMD

Inconsistent — names differ across channels

Brand assets

Favicon

8/15

covers SVG

Social share image

20/20

og:image + twitter:image set

Meta completeness

20/20

Organization schema

15/15

has name, logo + url

Contact info discoverable

0/10

no contact info discoverable

Findings

  • Brand name differs across channels — users see inconsistent identity
  • Single favicon only — add apple-touch-icon for iOS home-screen and high-DPI support
  • Consider adding contactPoint — helps appear in "contact us" rich results
  • 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
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
8 properties Valid
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "url": "https://hackmd.io",
  "name": "HackMD",
  "description": "A collaborative Markdown editor for you and your team to create, share, and edit documents in real-time. Sign up for free today.",
  "publishingPrinciples": "https://hackmd.io/s/terms",
  "logo": {
    "@type": "ImageObject",
    "url": "https://hackmd.io/hackmd-icon-1024.png"
  },
  "sameAs": [
    "https://www.facebook.com/hackmdio",
    "https://twitter.com/hackmdio",
    "https://www.linkedin.com/company/hackmd/",
    "https://www.producthunt.com/products/hackmd",
    "https://www.g2.com/products/hackmd"
  ]
}
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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