Schema Markup Generator Online — Free & Private
Build JSON-LD structured data for Article, Product, FAQ, or Local Business. Free, private, and processed entirely in your browser — no upload, no account, no file ever leaves your device.
How to use Schema Markup Generator
Build JSON-LD structured data for Article, Product, FAQ, or Local Business. Everything runs in this tab — nothing is uploaded for the core job.
- Enter your content — Type or paste what you want to work with — Schema Markup Generator runs immediately in your browser.
- Choose your options — Set any options Schema Markup Generator offers.
- Get your result — Copy or download the result \u{2014} done entirely on your device, nothing uploaded.
Privacy proof for Schema Markup Generator
This tool processes files in your browser. Open DevTools → Network while you run it: your document is not uploaded. After one online visit, many tools keep working with Airplane Mode on (libraries cached locally).
Popular tools
The highest-demand tools with full options — browse by category below for the rest.
Star any tool — it appears under Favorites on this device.
How this actually works
Each tool runs entirely with JavaScript already loaded in this page — PDF tools via pdf-lib and pdf.js, image tools via the browser's native Canvas API, and everything else with plain JavaScript. Your files or input are read into browser memory, processed, and handed back as a download or copyable result. This page itself is served by a small Laravel route; Laravel never sees your files either. The only backend in use is Supabase, and only for two optional things: signing in with a magic link, and — only if you're signed in — a log of which tool you ran and when. Honest limits worth knowing: Compress PDF flattens each page to a re-encoded image (great for scans, not ideal if you need selectable text after); HEIC conversion uses a small on-demand converter when the browser cannot decode HEIC natively (Safari often works without it); Fill PDF Form is best-effort for simple AcroForm fields, not a full Adobe Forms replacement; and Word/Excel/PowerPoint ⇄ PDF genuinely needs a server-side engine, so it isn't included — this build only ships tools that can honestly run client-side.
Questions people actually ask
Which schema types are supported?
Article, Product, FAQPage, and LocalBusiness — four of the most commonly used JSON-LD types for everyday sites.
Do I need to know JSON-LD syntax to use this?
No — fill in the plain-language form fields for whichever type you pick, and valid JSON-LD is generated automatically.
Where do I put the generated code?
Paste it inside a <script type="application/ld+json"> tag in your page's <head> (or anywhere in the body) — copy the whole snippet, including that wrapping tag, which is included in the output.
Does this guarantee rich results in Google?
No — valid structured data makes a page eligible for rich results, but Google decides independently whether and how to display them. No tool can guarantee that outcome.
Does this validate against Google's specific requirements?
It generates schema.org-valid JSON-LD for the fields you fill in. For Google's own rich-result eligibility rules on top of that, test the final page with Google's Rich Results Test after publishing.
Can I edit the generated code afterward?
Yes — it's plain, readable JSON; edit it directly before pasting it into your site if you need a field this form doesn't cover.
Which type should I use?
Article for blog posts/news, Product for something you sell, FAQPage for a page with genuine Q&A content, LocalBusiness for a physical business location.
Is my data sent anywhere?
No — the JSON-LD is built entirely in your browser from what you type; nothing is transmitted.
Is this really free, and is there a file size limit?
Yes — no account, no paywall. Since processing happens in your browser's memory rather than uploading anywhere, the practical limit is your device's available RAM, not a server quota. Very large files (500+ pages) may run slower, especially for Compress and PDF→JPG.
Does anything about my file get sent anywhere?
No. Every tool runs with pdf-lib/pdf.js loaded in this page; your file is read into browser memory and never leaves it. The only network call this app makes for your account is Supabase auth — and that only stores which tool you ran and when, never file content.
Why isn't Word/Excel/PowerPoint → PDF included?
Converting Office formats accurately needs a real rendering engine (what Word or LibreOffice use internally) — no browser library does this reliably. Rather than ship a broken version, it's left out.
Does TechDriven Tools have OCR (text recognition)?
Yes — OCR PDF recognizes text in scanned or photographed pages using Tesseract.js, running entirely on your device, and gives you a searchable PDF or a plain text file. Nothing is uploaded for this either.
Can I use this without an internet connection?
Once the page and its libraries have loaded once, yes — the tools themselves need no network access. Signing in and viewing history do require a connection, since those talk to Supabase.
What happens to the "history" if I sign in?
Only a row per tool run — the tool's name and a timestamp. No filename, no file content, ever. You can see the full list any time via the History button.
Are the non-PDF utilities (password generator, JSON formatter, etc.) private too?
Yes — same rule as the PDF tools. Word Counter, Case Converter, Password Generator, UUID Generator, Base64, Hash Generator, JSON Formatter and JWT Decoder all run with plain JavaScript already loaded in this page; nothing you type or paste is sent anywhere.
Schema Markup Generator, in depth
Build JSON-LD structured data for Article, Product, FAQ, or Local Business — no JSON-LD syntax knowledge required.
Features
Article Schema
Headline, author, date, image, and description fields.
Product Schema
Name, price, currency, and image for e-commerce pages.
FAQPage Schema
Build a real FAQ block from your own question-and-answer pairs.
LocalBusiness Schema
Name, address, and phone for a physical business location.
Why use Schema Markup Generator
- Make a page eligible for rich results in Google Search.
- Add structured data to a page without hand-writing JSON-LD.
- Help AI answer engines cite your content accurately, which increasingly rely on structured data.
- Standardize schema markup across similar pages on a site.
How it works
You fill in plain-language fields for whichever schema type fits your page, and the tool assembles valid schema.org JSON-LD, wrapped in the <script> tag ready to paste directly into your page's HTML — built live as you type, entirely in your browser.
What schema markup doesn't guarantee
Valid structured data makes a page eligible for rich results — it doesn't guarantee Google or any other platform will actually display them, since that decision is made independently by each platform. Test the final page with Google's own Rich Results Test after publishing to confirm it's recognized correctly.
Why people search for Schema Markup Generator
Build JSON-LD structured data for Article, Product, FAQ, or Local Business. If you arrived from a comparison article, Schema Markup Generator is the working utility those guides point at: labeled options, local processing, and a download you can verify.
Schema Markup Generator sits in our SEO & Web Tools group. The page is built so you can finish the job without creating an account, installing a desktop pack, or sending the payload to an unknown converter API.
Who Schema Markup Generator is for
- The file or text is sensitive enough that uploading feels wrong.
- A desktop suite is overkill for a one-page or one-photo job.
- You want a second opinion after another converter produced a weird output.
- You need a result now and do not want another account wall.
Recommended workflow
Generate the snippet or file locally → paste into your CMS or deploy repo → validate in Search Console or rich-result tests when it matters.
- Open Schema Markup Generator (also available from category hubs and ⌘K).
- Use the labeled fields or dropzone — options match what Schema Markup Generator actually does.
- Run the tool and wait for local progress to finish.
- Download or copy the result, then verify on the device where you will share it.
Tips that improve results
- On phones, plug in power for large PDFs, videos, or spreadsheets.
- Prefer UTF-8 text for developer converters; weird encodings cause most “broken” results.
- Start with a non-sensitive sample so you learn the options before the real file.
- Change one setting at a time when you are comparing quality or layout.
- Keep the original until stakeholders accept the download.
- Rename the output with date + purpose before you attach it to email.
Common mistakes with Schema Markup Generator
- Expecting Schema Markup Generator to replace a full desktop suite for every edge-case format.
- Skipping a sample check and discovering a bad export after the original was deleted.
- Chaining many lossy image/PDF steps when one careful pass would have been enough.
- Using a public computer without clearing downloads afterward.
Privacy model
Processing for Schema Markup Generator is designed to stay in the browser. Laravel serves the page; it does not receive your file bytes for conversion. Optional Supabase auth only stores which tool you ran and when — never filenames or contents.
Related tools
- Meta Tag Generator
- SERP Preview Tool
- Sitemap Generator
- Robots.txt Generator
- Keyword Density Checker
- UTM Builder
FAQ — Schema Markup Generator
Is Schema Markup Generator free to use?
Yes. Schema Markup Generator on TechDriven Tools is free — no account, no watermark, and no paywall for the core workflow.
Does Schema Markup Generator upload my file or text?
No for processing. Schema Markup Generator runs in your browser tab. Optional sign-in never stores file contents — only tool names and timestamps if you enable history.
When should I use Schema Markup Generator?
Use Schema Markup Generator for SEO & Web Tools jobs where privacy and speed matter: quick one-offs, sensitive inputs, or checking another app’s result without another upload site.
Will Schema Markup Generator work on my phone?
Yes in a modern mobile browser. Large inputs can take longer because your device does the work locally.
What are the limits of Schema Markup Generator?
There is no server quota from us. Limits are your device memory, battery, and formats the browser can decode. Schema Markup Generator will not pretend to support server-only Office or cloud-AI pipelines.
How is Schema Markup Generator different from upload-based sites?
Upload converters send your content to someone else’s server. Schema Markup Generator keeps the transform on-device whenever the format allows, which is the safer default for confidential documents, photos, tokens, and configs.
Bottom line
If you need Schema Markup Generator done quickly and privately, start at /schema-markup-generator, run it once on a sample, then process the real input. That is how TechDriven Tools stays competitive: honest capabilities, labeled UI, and content that matches what the tool actually ships.
From our blog: How to Generate JSON-LD Schema Markup