Publish Helper logo

Free JSON-LD Structured Data Builder — Schema Markup for Blog Posts

Generate JSON-LD structured data markup for your blog posts. Supports Article, BlogPosting, FAQPage, and more.

I

Structured Data Builder

II

How It Works

1.Fill in Details

Enter your article title, description, author name, publish date, and URL.

2.Choose Schema Type

Select the schema type: Article, BlogPosting, NewsArticle, or FAQPage.

3.Copy & Paste

Copy the generated JSON-LD script tag and paste it into your HTML <head> section.

III

Why Structured Data Matters

JSON-LD structured data helps search engines understand your content and display rich results in search — like featured snippets, knowledge panels, and FAQ accordions.

  • Rich search results get 30% higher click-through rates
  • Google explicitly recommends JSON-LD format
  • FAQPage schema can show your questions in search results
  • Article schema enables news and blog carousels
Last updated: May 2026|Built by content editors for content editors|Used by 10,000+ bloggers
IV

Frequently Asked Questions

Where do I paste the generated code?

+

Paste the <script> tag inside the <head> section of your HTML page, just before the closing </head> tag.

Can I verify my structured data?

+

Yes, paste your page URL into Google's Rich Results Test (search.google.com/test/rich-results) to verify.

Is this tool free?

+

Yes, completely free with no signup required.

Does this work with WordPress?

+

WordPress has plugins for structured data, but this tool is useful if you're using a custom theme or want full control.

V

All Tools

SEO Slug Generator

AI-powered title to URL slug

CJK Auto-Spacing

Space CJK & Latin text

HTML Diff Viewer

Compare before & after HTML

Content Stats

Word count, reading time & more

A11y Checker

Check HTML accessibility issues

OG Image Generator

Create social share images

Markdown Converter

HTML to Markdown and back

TOC Generator

Table of contents from headings

Case Converter

Convert text to uppercase, lowercase, title case, and more

Text Extractor

Extract URLs, emails, and phone numbers from text

Text Diff Checker

Compare two texts and find differences

Keyword Density

Analyze word frequency and keyword density

SERP Preview

Preview your Google search snippet

Readability Checker

Check Flesch-Kincaid, Gunning Fog, and more

Or start with the main HTML cleanup tool

Open Publish Helper

Changelog

v3.3.12026-06-17
  • FixSlug generator updated to latest AI model for better reliability
  • FixHeading conversion now supports U+FE30 colon separator (︰) used in vertical CJK text
  • FixHeading conversion no longer includes leading &nbsp; in the extracted title
  • FixOG image generator now wraps long CJK text and prevents overflow with ellipsis truncation
  • ImprovedUpdated sharp to 0.35.1 for better image processing
v3.3.02026-05-30
  • FixSEO & a11y: <html lang> attribute, theme-color meta, OG image alt text i18n
  • FixGA scripts properly removed on consent decline
  • FixContent Stats i18n + link count regex fix
  • FixTool page section numbering corrected (all 14 pages)
  • ImprovedSimplified cleanup options — removed 10 checkboxes Tiptap already handles, kept only 4 useful ones
  • ImprovedAuto-clean only triggers on paste, not every content change
v3.2.12026-05-26
  • FixHeading converter now correctly splits paragraphs containing MULTIPLE heading-strong elements
  • FixHeading converter now places extracted headings BEFORE their body paragraph instead of after
  • FixEditor toolbar no longer causes React hydration mismatch on first paint
  • FixMissing @tiptap/extension-drag-handle-react dependency added
v3.2.02026-05-23
  • New6 new SEO content editing tools — Case Converter, Text Extractor, Text Diff Checker, Keyword Density Analyzer, SERP Preview Generator, Readability Checker
  • NewHeading dropdown expanded to H5-H6 (was H1-H4 only)
  • NewTable toolbar — insert/delete rows & columns, merge/split cells, toggle header row
  • NewDrag Handle React — drag and reorder blocks in the editor
  • NewCase Converter — 11 case formats including camelCase, PascalCase, snake_case, kebab-case
  • ImprovedSERP Preview — accurate Google-style preview with desktop/mobile views
  • ImprovedText Diff — word-level highlighting within changed lines
  • ImprovedAll new tools linked from the main page TOOLS & GUIDES section and related pages
  • Improvedzh-TW FAQ alignment fixed across all tools
v3.1.12026-05-23
  • FixEditor draft restore — saved content now correctly loads into the Tiptap editor on page reload
  • ImprovedDependency updates for better performance and stability
v3.1.02026-05-14
  • NewBold List Labels — auto-bold label prefixes (e.g. "Name: John" → "<strong>Name:</strong> John") in list items
  • NewFormatting Add-ons group — Heading Conversion, CJK Auto-Spacing, and Bold List Labels now grouped under a collapsible section
  • FixCJK Auto-Spacing now works across HTML tag boundaries
v3.0.22026-05-08
  • FixHeading converter now correctly splits multiple H2/H3 prefixes inside a single <strong> element separated by <br> tags
v3.0.12026-05-07
  • FixHTML cleaner now properly strips orphaned <strong><br><br></strong> tags left behind by Google Docs
  • FixHeading converter now detects H2/H3 prefixes inside <strong> tags embedded at the end of a paragraph
  • FixTrailing <br> tags at the end of paragraphs are now stripped — no more pointless line breaks before headings
v3.0.02026-05-03
  • NewHTML Diff Viewer — compare before and after HTML with a visual diff (green/red)
  • NewContent Stats Calculator — word count, reading time, heading, image, and link counts
  • NewHTML Accessibility Checker — detect missing alt text, empty headings, skipped levels, and more
  • NewOG Image Generator — create 1200×630 social share images from your blog post title
  • NewMarkdown ↔ HTML Converter — bidirectional conversion between Markdown and HTML
  • NewTable of Contents Generator — auto-generate nested TOC from heading tags in HTML or Markdown
  • NewJSON-LD Structured Data Builder — generate Article, BlogPosting, and FAQPage schema markup
  • NewAuto-clean on paste — optional toggle that auto-triggers cleanup when content is pasted
  • NewTable cleanup options — strip cell widths and remove empty table cells
  • NewAuto-save draft — content is saved to localStorage and restored on accidental refresh
  • NewAll new tools linked from the main page TOOLS & GUIDES section and related pages
v2.4.12026-04-27
  • NewParagraph option added to heading dropdown — convert headings back to normal text
  • FixH1–H6 heading prefixes now convert correctly even when pasted with leading line breaks
  • FixFixed page crash on load — cookie consent now renders reliably
  • ImprovedDependency updates for better performance and stability
v2.4.02026-04-17
  • NewClear button — quickly wipe all editor content and reset the HTML panel from the left panel header
  • FixEmpty <p></p> placeholder no longer appears in the HTML panel after clearing the editor
  • NewImage insert via URL — paste any image URL into the editor with a new toolbar popover
v2.3.22026-04-14
  • FixHeading conversion rewritten with DOM parsing — now works with any wrapper tag, split headings, and safely preserves <li> inside lists
  • FixEmpty heading tags left behind by Google Docs are now automatically removed
v2.3.12026-03-25
  • FixHeading conversion now handles spaces before the colon (e.g. "H2 : Title")
  • FixRight-to-left content (Arabic, Hebrew) no longer inverts embedded English text in the editor
  • FixSpacer paragraphs (&nbsp;) are now preserved in the HTML output instead of being stripped
v2.3.02026-03-20
  • NewCJK auto-spacing — automatically insert spaces between CJK characters and English letters or numbers (powered by pangu.js)
  • NewStandalone CJK Auto-Spacing tool page with before/after examples, FAQ, and SEO-optimized bilingual content
  • NewChinese UI text auto-spacing — zh-TW interface text now has proper CJK–Latin spacing
  • FixMobile toolbar no longer floats and follows scrolling — stays pinned at the bottom of the editor
  • FixMobile toolbar buttons now scroll horizontally instead of overflowing
  • FixFind & Replace inputs no longer break out of the container on narrow screens
v2.2.12026-03-20
  • FixHeading conversion now uses the text prefix (e.g. H3:) to set the heading level, even when the content is already inside a different heading tag
v2.2.02026-03-18
  • NewAI-Powered Title to SEO Slug — Convert blog titles in any language to SEO-friendly English slugs in under 10 seconds
  • NewSlug generator toggle on the main page — generate slugs right after editing, above the fold
  • NewTable support — pasted tables from Google Docs now render correctly
  • NewRemove <br> after headings cleanup option (on by default)
  • NewPartial text selection copy in the HTML code view
  • NewSticky Clean HTML button at the bottom of the page
  • ImprovedHeading conversion now strips prefixes from existing heading tags and supports Chinese full-width colon (：)
  • ImprovedShared footer across all pages
v2.1.22026-03-17
  • FixBug fixes and improvements
v2.1.12026-03-16
  • FixBug fixes and improvements
v2.1.02026-03-16
  • NewFormatted/Raw toggle for the HTML code view
  • ImprovedCopying from the code panel now always gives clean, unformatted HTML
v2.0.02026-03-16
  • NewWelcome to Publish Helper — free online tools for content editors
  • ImprovedImproved search engine visibility
v1.1.02026-03-16
  • ImprovedClipboard copy — clean HTML output matches the code view
v1.0.02026-03-16
  • NewRich text editor with Google Docs paste support
  • NewHTML cleanup: strip styles, classes, empty tags, and Google Docs artifacts
  • NewHeading conversion from text prefixes to proper HTML tags
  • NewFind & replace with regex support and saveable presets
  • NewSyntax-highlighted HTML preview with one-click copy
Suggest a Feature