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② 後台搜尋「MarkExcell Meta Tags and Structured Data」→ 直接安裝（推薦）
原文外掛簡介
MarkExcell Meta Tags and Structured Data is a lightweight plugin for WordPress sites that need precise control over their on-page SEO metadata without installing a full SEO suite.
Every feature is controlled from a pair of meta boxes that appear directly on the page or post edit screen, keeping everything in context.
What it does:
Adds a custom title tag per page or post, with a fallback to the WordPress default (post title + site name).
Adds a custom meta description, falling back to the post excerpt, then the site-wide tagline.
Outputs Open Graph tags (og:title, og:description, og:image, og:url, og:type, og:site_name) with per-page overrides.
Outputs Twitter Card (summary_large_image) tags using the same data.
Provides a freeform JSON-LD structured data field for any page or post, with JSON validation on save and a clear error message if the JSON is malformed.
Auto-generates a BlogPosting schema for posts when no manual JSON-LD is provided, referencing your site’s #person and #website entities.
What it does NOT do:
No settings pages, no dashboard widgets, no telemetry.
No sitemap generation.
No keyword analysis or content scoring.
No redirection management.
Important: Do not run this plugin alongside a full SEO plugin (Yoast SEO, Rank Math, All in One SEO, etc.) — you will get duplicate title tags and meta tags in your
.For developers:
Three filters let you customise the site-wide defaults without editing the plugin:
me_seo_default_description — override the fallback meta description.
me_seo_default_og_image — set a site-wide default OG image URL.
me_seo_post_types — add additional post types to show the meta boxes on (defaults to page and post).
Example:
add_filter( 'me_seo_default_description', function() {
return 'Your custom site-wide description here.';
} );
add_filter( 'me_seo_default_og_image', function() {
return 'https://example.com/wp-content/uploads/default-share.png';
} );
// Add meta boxes to a custom post type called 'project'
add_filter( 'me_seo_post_types', function( $types ) {
$types[] = 'project';
return $types;
} );
Usage
SEO: Title, Description & Open Graph meta box
Title tag
Enter the exact string you want to appear in the browser tab and search results. Leave blank and WordPress will use its default format: Post Title – Site Name.
Recommended length: 60 characters or fewer.
Meta description
The sentence or two that appears beneath your page title in search results. Leave blank to fall back to the post excerpt; if there is no excerpt, the site-wide default description is used.
Recommended length: 120–160 characters.
Open Graph overrides
These three fields let you set different text and image for social sharing without changing the SEO fields above — useful when the ideal tweet wording differs from the ideal title tag.
og:title — leave blank to inherit the title tag value.
og:description — leave blank to inherit the meta description.
og:image URL — paste the full URL of a 1200×630 px image. Leave blank to use the post’s featured image; if there is no featured image, the site-wide default OG image is used (set via the me_seo_default_og_image filter).
Structured Data (JSON-LD) meta box
Paste a raw JSON-LD object into this field. The plugin will:
Validate that the JSON is well-formed.
Check that a top-level @context or @graph key is present.
Re-encode and store the canonical form on save.
Output it as a
