このページでは、他のプラグインが生成するソースコードと、私たちのプラグインが出力する“最適化された構造化データ”を比較できます。無駄をそぎ落としたシンプルな記述が、検索エンジンにどれだけ有効か──ぜひご確認ください。
For effective SEO, structured data should be lean and purposeful. Most SEO plugins tend to generate bloated JSON-LD with unnecessary elements. Here, we compare typical plugin output with our plugin’s clean, SEO-optimized code. See how streamlined markup makes a difference ? both for search engines and for performance.
以下にSEOプラグインが出力するJSON-LD（A）（B）があり（C）としてSyntaxHub-JLDが出力JSON-LDを表示しています。
(A)：SEOプラグイン「All in ONE SEO」が出力するJSON-LD（パンくずリスト・ページ説明・サイト説明）
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "BreadcrumbList",
"@id": "https://(domein)/second-layers/third-layers/#breadcrumblist",
"itemListElement": [
{
"@type": "ListItem",
"@id": "https://(domein)/#listItem",
"position": 1,
"name": "HOME",
"item": "https://(domein)/",
"nextItem": {
"@type": "ListItem",
"@id": "https://(domein)/second-layers/#listItem",
"name": "second-layers"
}
},
{
"@type": "ListItem",
"@id": "https://(domein)/second-layers/#listItem",
"position": 2,
"name": "second-layers",
"item": "https://(domein)/second-layers/",
"nextItem": {
"@type": "ListItem",
"@id": "https://(domein)/second-layers/third-layers/#listItem",
"name": "third-layers"
},
"previousItem": {
"@type": "ListItem",
"@id": "https://(domein)/#listItem",
"name": "HOME"
}
},
{
"@type": "ListItem",
"@id": "https://(domein)/second-layers/third-layers/#listItem",
"position": 3,
"name": "third-layers",
"previousItem": {
"@type": "ListItem",
"@id": "https://(domein)/second-layers/#listItem",
"name": "second-layers"
}
}
]
},
{
"@type": "Organization",
"@id": "https://(domein)/#organization",
"name": "(WebSite-NAME)",
"url": "https://(domein)/"
},
{
"@type": "WebPage",
"@id": "https://(domein)/second-layers/third-layers/#webpage",
"url": "https://(domein)/second-layers/third-layers/",
"name": "third-layers - (WebSite-NAME)",
"description": "(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)",
"inLanguage": "ja",
"isPartOf": {
"@id": "https://(domein)/#website"
},
"breadcrumb": {
"@id": "https://(domein)/second-layers/third-layers/#breadcrumblist"
},
"datePublished": "2025-04-03T13:24:17+09:00",
"dateModified": "2025-04-03T13:25:20+09:00"
},
{
"@type": "WebSite",
"@id": "https://(domein)/#website",
"url": "https://(domein)/",
"name": "(WebSite-NAME)",
"inLanguage": "ja",
"publisher": {
"@id": "https://(domein)/#organization"
}
}
]
}
</script>
(B)：SEOプラグイン「Yoast SEO」が出力するJSON-LD（パンくずリスト・ページ説明・サイト説明）
<script type="application/ld+json" class="yoast-schema-graph">
{
"@context": "https://schema.org",
"@graph": [
{
"@type": "WebPage",
"@id": "https://(domein)/second-layers/third-layers/",
"url": "https://(domein)/second-layers/third-layers/",
"name": "third-layers - （WebSite）",
"isPartOf": {
"@id": "https://(domein)/#website"
},
"datePublished": "2025-04-03T04:24:17+00:00",
"dateModified": "2025-04-03T04:25:20+00:00",
"breadcrumb": {
"@id": "https://(domein)/second-layers/third-layers/#breadcrumb"
},
"inLanguage": "ja",
"potentialAction": [
{
"@type": "ReadAction",
"target": [
"https://(domein)/second-layers/third-layers/"
]
}
]
},
{
"@type": "BreadcrumbList",
"@id": "https://(domein)/second-layers/third-layers/#breadcrumb",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "HOME",
"item": "https://(domein)/"
},
{
"@type": "ListItem",
"position": 2,
"name": "second-layers",
"item": "https://(domein)/second-layers/"
},
{
"@type": "ListItem",
"position": 3,
"name": "third-layers"
}
]
},
{
"@type": "WebSite",
"@id": "https://(domein)/#website",
"url": "https://(domein)/",
"name": "（WebSite）",
"description": "(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)",
"potentialAction": [
{
"@type": "SearchAction",
"target": {
"@type": "EntryPoint",
"urlTemplate": "https://(domein)/?s={search_term_string}"
},
"query-input": {
"@type": "PropertyValueSpecification",
"valueRequired": true,
"valueName": "search_term_string"
}
}
],
"inLanguage": "ja"
}
]
}
</script>
解説をいれる。
(C)：S-Hub-pJLDが出力するJSON-LD（パンくずリスト・ページ説明・サイト説明）
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "BreadcrumbList",
"itemListElement": [
{
"@type": "ListItem",
"position": 1,
"name": "HOME",
"item": "https://(domein)/"
},
{
"@type": "ListItem",
"position": 2,
"name": "second-layers",
"item": "https://(domein)/second-layers/"
},
{
"@type": "ListItem",
"position": 3,
"name": "third-layers"
}
]
}
</script>
<script type="application/ld+json">
{
"@context": "https://schema.org",
"@type": "WebPage",
"url": "https://(domein)/second-layers/third-layers/",
"name": "third-layers",
"description": "(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)(lorem ipsum)[…]",
"mainEntityOfPage": "https://(domein)/second-layers/third-layers/",
"headline": "third-layers",
"inLanguage": "ja",
"isPartOf": {
"@type": "WebSite",
"url": "https://(domein)"
}
}
</script>