Schema markup generators simplify creating structured data by converting form inputs into valid JSON-LD, Microdata, or RDFa code. You select a schema type (LocalBusiness, Product, Article, FAQ, etc.), fill in the relevant fields, and copy the generated code into your page's <head> or <body> section. This lets search engines understand your content context without you writing raw JSON manually. Google's Schema Markup Helper walks you through tagging elements on a live page, then generates the code. It covers common types like articles, events, and local businesses, but lacks newer schemas like HowTo or VideoObject. Merkle's Schema Markup Generator and TechnicalSEO.com's tool offer broader type coverage and JSON-LD output, which Google prefers because it separates markup from HTML. Schema.org itself provides full documentation and examples for every type, though it's not a form-based generator. At Ottawa SEO, we typically hand-code JSON-LD for client sites because generators often miss nuanced properties—like adding a "priceRange" in CAD for a LocalBusiness schema or linking multiple "sameAs" URLs for social profiles. Generators give you 70–80% of what you need; the last 20% requires checking Schema.org specs and testing in Google's Rich Results Test. We've seen clients add FAQPage schema via a generator, then wonder why it doesn't trigger rich snippets—usually because the questions lack enough detail or the page isn't indexed yet. Key watch-outs: Don't copy schema blindly across pages. A Product schema needs unique SKU, price, and availability per item. Validate output with Google's Rich Results Test and Schema.org validator before deploying. Generators won't catch logical errors like listing a Toronto address but a 613 Ottawa phone number in LocalBusiness markup. Also, WordPress plugins like Rank Math and Yoast auto-generate basic schema, so check if you're duplicating markup—Google ignores or penalizes conflicting structured data on the same page. Use a generator as a starting template, then refine manually for accuracy and completeness.