DEV3 Schema Markup (JSON-LD) Generator — Source Code (React + Tailwind)

Source code of the DEV3 Schema Markup (JSON-LD) Generator, a JSON-LD generator for organization, local business, product, FAQ, article and breadcrumb schemas with a checker that flags missing properties.

Download: buy a licence and the ZIP is waiting in Account → Downloads. Try it live: https://dev3.tech/tools/schema-markup-generator shows the finished tool running.

What is in the download

• A standalone Vite + React + TypeScript + Tailwind CSS project: src/tool holds the tool, shared pieces sit beside it
• package.json with exact versions plus a lockfile, so npm ci works
• README.md (run, build, embed in Next.js or plain React) and an MIT LICENSE

What the code does

• Field definitions per schema type
• Clean JSON-LD output and ready-made script tag
• Validator-style warnings for missing recommended properties
• Repeatable pair fields for FAQ and breadcrumbs

Tech stack

React 19, TypeScript, Vite, Tailwind CSS 4.

Install and customise

The How to install and How to use tabs list the steps. In short: unzip, npm ci, npm run dev, then copy the tool folder into your own app if you want to embed it.

Good to know

• A browser-only tool: there is no backend or database in the code.