Marksmith turns the schema.org spec into a form. Pick a type, fill the fields, get valid Google-approved JSON-LD injected into your page head. No syntax to learn. No raw JSON to wrangle.
{
"@context": "https://schema.org",
"@type": "LocalBusiness",
"name": "Wandzilak Web Design",
"telephone": "+1-386-555-0123",
"address": {
"@type": "PostalAddress",
"streetAddress": "…",
"addressLocality": "Palm Coast",
"addressRegion": "FL"
},
"priceRange": "$$"
}
Every schema type is a form with labeled fields, required-field markers, and Google-doc help text under each input. Marksmith builds the JSON. You never see angle brackets.
The preview pane updates as you type. Every keystroke. Whitespace included. Catch a missing comma before you save — never after Google does.
Opens Google's actual Rich Results Test in a new tab, pre-filled with your page URL. Google's authoritative verdict, free, no API key required. The same workflow agencies pay $50/month for elsewhere.
Required fields. URL formats. ISO-8601 dates. Enum values. Marksmith catches the obvious problems in the editor — before you ever hit save.
LocalBusiness, Article, FAQ, Product, Review, Event, Person, Organization, WebSite, Recipe, Course, JobPosting, Video, Image, Software, Podcast, Attorney, Physician, MedicalCondition, RealEstateListing — and more on the way.
Stack Article + FAQ + Breadcrumbs on a single blog post. Or Product + Review + AggregateRating on a product page. Each renders as its own clean JSON-LD block. Unlimited on paid plans.
The "Marksmith — Schema" panel sits below the editor on every post, page, and custom post type.
Type-picker dropdown groups Free and Paid types. Free covers LocalBusiness, Article, FAQ. Paid unlocks 22 more.
Required fields are starred. Every input has help text from Google's own docs. The JSON-LD preview updates live.
Marksmith injects the JSON-LD into <head> on the front-end. Click "Test on Google" to verify.
Free types are open to everyone. Paid types unlock with any license.
Agency plan includes 10 domains. Managing 20+ sites? Ask about Unlimited.
No. Marksmith only emits JSON-LD <script> blocks in <head>. It doesn't touch meta tags, titles, OG tags, or the sitemap. Run it alongside any SEO plugin. Google accepts multiple JSON-LD blocks per page — if your SEO plugin also emits an Article schema, Google will read both.
Google deprecated their public Structured Data Testing Tool API in 2020 and has not published a replacement. The Rich Results Test exists at search.google.com/test/rich-results but has no public API. So Marksmith mirrors schema.org's required-field and type rules locally for instant editor feedback, plus a one-click deeplink to Google's actual test for the authoritative verdict. Same approach Yoast, Rank Math, and Schema Pro all take — and it's the only path that stays free.
No. The free tier is free forever and covers the 3 most-used types: LocalBusiness, Article, FAQ. Every small site needs at least one of them. You only need a license key if you want the additional 22 types, unlimited schemas per page, or site-wide schemas.
The WordPress plugin is the primary product. For other platforms, we publish the generated JSON-LD as raw text you can paste into custom-code blocks (Webflow / Ghost theme injection / Shopify theme.liquid). The export workflow is on the roadmap — email us if you'd like early access.
The front-end JSON-LD stops being emitted. Your stored schemas stay in WordPress post meta, untouched. If you delete the plugin entirely, the post meta is removed and you start fresh on reinstall.
Depends on your plan. Single = 1 domain. Agency = 10 domains. Unlimited = unlimited. Domain binding happens automatically when the plugin first verifies. If you remove a site from your stable, contact us to unbind that slot.
No. Everything stays inside your WordPress install. The only outbound network call is the license verification against marksmith.wandzilakwebdesign.com/api/validate, which sends just your license key + your site's hostname — never any post content. Full External Services disclosure is in the plugin's WordPress.org readme.
Install the free plugin from WordPress.org. Add Marksmith to one post. See what clean JSON-LD looks like when nobody's making you type it by hand.