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Content

· 9 checks — Internal links, mixed-content guards, Open Graph previews, and structured data rolled into one auditable list.
SCORE
93
GRADE
A
FIX
1
REVIEW
0
PASS
8
INFO
0
Checks
9
8 PASS 1 FIX
F
Image Optimization
Action
5 issues found across 34 images
FIX
5 issues found across 34 images
Warning::
8 images significantly larger than display size
Resizing to display dimensions could save approximately 81 KB.
Got: ~81 KB wasted
Warning::
26 images missing explicit width/height
Images without dimensions cause layout shifts (CLS). Set explicit width and height attributes.
Info::
7 below-fold images missing loading="lazy"
Lazy loading defers below-fold images, reducing initial page weight.
Info::
1 of 34 images use legacy formats
Info::
10 image(s) rendered at a different aspect ratio than the source
The displayed dimensions distort the source -- CSS is forcing the image into a container at the wrong ratio, producing visible stretching or squashing. Either crop the source to match or use object-fit: cover (and accept the crop). Sample: https://rasterbator.org/api/gallery/gallery_msdw4jgl_rh5i0n64/image?size=thumb, https://rasterbator.org/api/gallery/gallery_msf3i4qy_81o2weip/image?size=thumb, https://rasterbator.org/api/gallery/gallery_msexo1v1_hkq53uhc/image?size=thumb (+7 more).
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
Open Graph tags are well configured for social sharing.
PASS
Open Graph tags are well configured for social sharing.
Info::
og:title is long (71 characters)
Titles over 60 characters may be truncated in social sharing previews.
Got: 71 chars Expected: 25–60 chars
URL: 71 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

Preview

rasterbator.org

Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator

Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in your browser.

Preview quality · Twitter/X A+ · 95/100

Title will be truncated (73 chars / 70 max)

  • twitter:card — summary_large_image
  • twitter:title — Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator
  • twitter:description — Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in...
  • twitter:image — https://rasterbator.org/og-image.png
  • Title will be truncated on Twitter/X (73 chars, max 70)

    → Shorten the title to ≤70 characters

RASTERBATOR.ORG

Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator

Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in your browser.

Preview quality · Facebook A+ · 95/100

Title will be truncated (73 chars / 60 max)

  • og:title — Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator
  • og:description — Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in...
  • og:image — https://rasterbator.org/og-image.png
  • og:type — website
  • og:url — https://rasterbator.org/
  • og:site_name — Rasterbator
  • Title will be truncated on Facebook (73 chars, max 60)

    → Shorten og:title to ≤60 characters

Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator

rasterbator.org

Preview quality · LinkedIn A+ · 100/100
  • og:title — Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator
  • og:description — Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in...
  • og:image — https://rasterbator.org/og-image.png

rasterbator.org

Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator

Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in your browser.

Preview quality · Slack A+ · 100/100
  • og:title — Rasterbator — Free Online Wall Poster Maker | Halftone Poster Generator
  • og:description — Free online halftone poster generator. Turn any photo into a large wall poster — multi-page PDF, no sign-up, works in...
  • og:image — https://rasterbator.org/og-image.png

Social preview quality

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

A+ · 97/100
FieldTwitter/XFacebookLinkedInSlack
og:title
og:description
og:image
og:type
og:url
og:site_name
twitter:card———
twitter:title———
twitter:description———
twitter:image———
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
3 JSON-LD block(s) found — structured data is well configured.
PASS
3 JSON-LD block(s) found — structured data is well configured.
Info::
Missing recommended property "sameAs" for Organization
Adding "sameAs" can improve how search engines display your content.
Info::
Custom type "WebApplication" — unable to validate specific properties
Info::
Custom type "HowTo" — unable to validate specific properties
Info::
3 JSON-LD blocks found

Adding "sameAs" can improve how search engines display your content.

Why this matters

Recommended schema properties unlock richer SERP layouts — without them you get the basic rich result instead of the enhanced one.

Learn more ▾

Recommended properties expand what Google can render. E.g., adding aggregateRating to Product unlocks star ratings; adding image to Article unlocks the image-card variant. Each recommended property is a direct SERP-real-estate gain.

Source: Google Search Central / schema.org

JSON-LD Blocks

Block 1 : WebApplication
13 properties Valid
{
  "@context": "https://schema.org",
  "@type": "WebApplication",
  "@id": "https://rasterbator.org/#webapp",
  "name": "Rasterbator",
  "alternateName": [
    "Rastebator",
    "Rastorbator",
    "Rasterbation",
    "Rasterbater",
    "Posterizer"
  ],
  "url": "https://rasterbator.org",
  "description": "Free online tool to transform your photos into large-scale, multi-page posters with stunning halftone effects.",
  "applicationCategory": "DesignApplication",
  "operatingSystem": "Any",
  "browserRequirements": "Requires JavaScript",
  "offers": {
    "@type": "Offer",
    "price": "0",
    "priceCurrency": "USD"
  },
  "featureList": [
    "Image to poster conversion",
    "Halftone effect generation",
    "Multi-page PDF output",
    "JPG tile ZIP export",
    "Customizable dot patterns",
    "Multiple paper sizes",
    "Image cropping and panning",
    "Dark mode support"
  ],
  "inLanguage": [
    "en",
    "zh",
    "es",
    "fr",
    "tr",
    "de",
    "pt-BR",
    "pl",
    "it"
  ]
}
Block 2 : Organization
7 properties Valid
{
  "@context": "https://schema.org",
  "@type": "Organization",
  "@id": "https://rasterbator.org#organization",
  "name": "Rasterbator",
  "url": "https://rasterbator.org",
  "logo": "https://rasterbator.org/icon-512.png",
  "contactPoint": {
    "@type": "ContactPoint",
    "email": "info@rasterbator.org",
    "contactType": "customer support"
  }
}
Block 3 : HowTo
10 properties Valid
{
  "@context": "https://schema.org",
  "@type": "HowTo",
  "@id": "https://rasterbator.org/#howto",
  "name": "How to Make a Large Wall Poster at Home with Rasterbator",
  "description": "With the Rasterbator wall poster maker and a standard printer, you can create giant posters at home that rival commercial print shops.",
  "inLanguage": "en",
  "totalTime": "PT10M",
  "supply": [
    {
      "@type": "HowToSupply",
      "name": "A4 or Letter paper"
    },
    {
      "@type": "HowToSupply",
      "name": "Tape or poster putty"
    }
  ],
  "tool": [
    {
      "@type": "HowToTool",
      "name": "Home or office printer"
    }
  ],
  "step": [
    {
      "@type": "HowToStep",
      "position": 1,
      "name": "Step 1: Upload Your Image",
      "text": "Drag a high-resolution photo (12 MP or higher) into the Rasterbator poster generator. Choose your paper size, set the number of pages wide, and pick a halftone poster style — classic dots, color halftone, or black-and-white."
    },
    {
      "@type": "HowToStep",
      "position": 2,
      "name": "Step 2: Configure and Generate",
      "text": "Adjust the Rasterbator grid size, dot shapes, and colors to get the look you want. Enable crop marks and page labels for easier assembly, then generate your PDF."
    },
    {
      "@type": "HowToStep",
      "position": 3,
      "name": "Step 3: Print and Assemble",
      "text": "Print all pages at 100% scale (never use \"fit to page\"). Arrange them using the position labels, trim margins along the crop marks, and tape pages together on the back. Mount your finished Rasterbator poster with poster putty or double-sided tape."
    }
  ]
}
A+
Rich Results Eligibility
3 JSON-LD block(s) declaring 3 schema type(s)
PASS
3 JSON-LD block(s) declaring 3 schema type(s)
Info::
3 rich-result schema type(s) declared
Inventory of structured-data types on the page (each may unlock a different SERP feature): HowTo, Organization, WebApplication 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
A
Brand Presence
Site-name consistency, favicon, social image, meta tags, schema, and contact signals
PASS

Brand Presence

Your brand name differs across channels — visitors see inconsistent identity.

A

85/100

Site name appears as

Page titleFree Online Wall Poster Maker | Halftone Poster Generator
og:site_nameRasterbator
twitter:site—
Organization.nameRasterbator

Inconsistent — names differ across channels

Brand assets

Favicon

15/15

covers multiple sizes + apple-touch-icon

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

10/10

contact page + mailto link

Findings

  • Brand name differs across channels — users see inconsistent identity

How consistently your brand appears across channels — shared link previews, structured data, favicon, contact info.

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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