Schemer - Schema Markup Generator

About

Schemer instantly generates JSON-LD schema markup from any webpage. No coding required. Open the extension, and it automatically reads the page you’re on, detects its type, and outputs structured data
ready to paste into your HTML.

Why schema markup matters
Schema markup helps Google understand your content and display rich results in search: star ratings, FAQ dropdowns, recipe cards, event details, product prices, and more. Adding it correctly is the
difference between a plain blue link and a rich snippet that stands out.

How it works
	1.	Open Schemer on any page
	2.	Schema is generated automatically from the live content
	3.	Copy the  block
	4.	Paste it into your page’s 

You can also paste a URL or upload an HTML file directly, useful for pages that are still in development.

Detects and generates 20+ schema types
	•	Article, BlogPosting, NewsArticle
	•	Product (with offers, ratings, specs, GTIN, MPN)
	•	Recipe (ingredients, steps, nutrition, cook time)
	•	Event (location, dates, tickets, online/in-person)
	•	FAQPage and QAPage
	•	HowTo (steps, tools, supplies)
	•	LocalBusiness, Restaurant, Hotel and more
	•	Course + CourseInstance
	•	JobPosting (salary, remote, employment type)
	•	SoftwareApplication
	•	Movie, TVSeries
	•	Book (ISBN, publisher, edition)
	•	Person (bio, author, profile pages)
	•	Podcast, PodcastEpisode
	•	Dataset
	•	VideoObject
	•	WebSite with SearchAction
	•	BreadcrumbList
	•	WebPage subtypes: AboutPage, ContactPage, CollectionPage

Only outputs what’s on the page
Schemer never fabricates data. If a property isn’t found in the page content, it won’t appear in the output. Every field maps to a real element: meta tags, headings, structured content, microdata, or
existing JSON-LD already on the page.

Also merges existing schema
If your page already has partial schema markup, Schemer reads it and fills in the gaps rather than overwriting what’s there.

Three input modes
	•	Current page: reads the live DOM of your active tab instantly
	•	Paste URL: fetches and analyzes any public URL
	•	Upload HTML: analyze a local file before it goes live