Home Tools Blog About

Structured Data Tester

In short

Paste JSON-LD or page HTML and validate it against required and recommended properties per schema type, with a clear report.

  • Runs in your browser
  • Nothing uploaded
  • Free, no sign-up

Paste JSON-LD or page HTML

0
Awaiting input
Paste structured data and select Test.

Report

Paste JSON-LD and select Test.

Detected items

None yet

Parsed JSON-LD

Checked locally in your browser. Nothing is uploaded.

🛡
100% PrivateNo server uploads, ever
InstantRuns in your browser
💧
No WatermarksClean output, always
🆓
Free ForeverNo accounts, no limits

How to Use Structured Data Tester

Structured Data Tester · free online tool · All Tools Verse
Structured Data Tester. Free online tool that runs in your browser.
  1. Paste your structured data. Drop in a JSON-LD block, a full head, or raw JSON-LD. Script tags and the @graph format are read automatically.
  2. Select Test. The tool finds each item, reads its type, and checks it against the rules for that type.
  3. Read the report. Each line shows a pass, a warning, or an error, with a note on what to add.
  4. Check detected types. The detected items panel lists every type found and shows the parsed JSON-LD.
  5. Fix and re-test. Update your markup and run the test again until the report is clean.

Frequently Asked Questions

What does this tool test?

It reads your JSON-LD and checks each item for the required and recommended properties that search engines expect for that type.

Which types does it know?

Common types including Article, Product, Recipe, FAQ, LocalBusiness, Event, Breadcrumb, Organization, JobPosting, Person, and more.

Does it fetch my live URL?

No. You paste the markup yourself, which keeps the check private and works on pages that are not published yet.

How is this different from the Google test?

This is a fast, private check you can run on a draft. For final confirmation of rich result eligibility, also use the official Google test.

Does it support the @graph format?

Yes. Items inside an @graph array are read and checked individually, and arrays of blocks are handled too.

Is my data sent anywhere?

No. The check runs entirely in your browser, so nothing you paste is uploaded.

Keep going

Related Tools

All Seo tools →

Convert Data URI to ASCII

online Data URI decoder. RFC 2397 compliant, handles Base64 and URL-encoded payloads. Client-side, instant,…

Convert Data URI to Image

online Data URI to image decoder. Magic-byte format detection, dimension extraction, correct file download.…

Convert Data URI to UTF-8

online Data URI to UTF-8 decoder with byte-breakdown panel for emoji and CJK. Client-side,…

Convert Image to Data URI

Convert images to base64 data URIs preserving original format. HTML/CSS/Markdown wrappers. Free, offline, client-side.

Convert Text to Data URI

Convert Text to Data URIs - choose MIME (text, HTML, CSS, JSON, SVG), URL-encoded…

Convert Unicode to Data URL

Convert Unicode to data URLs with base64 or URL-encoding, 12 MIME types, charset toggle.…

Convert UTF-8 to Data URI

Convert UTF-8 text to data: URI (percent or base64), 9 MIME types + custom,…

Data Storage Converter - MB, GB, MiB, GiB

Free data storage converter. Switch between bytes, KB, MB, GB, TB and binary KiB,…

Data Transfer Rate Converter - Mbps to MB/s

Free data transfer rate converter. Switch between Mbps, MB/s, Gbps and more instantly. Runs…

Email Subject Line Tester

Score email subject lines - length, spam triggers, emoji count, inbox preview. Tips to…

EXIF Data Remover

Strip EXIF, XMP, ICC, IPTC metadata from JPEG losslessly - and PNG/WebP via canvas.…

EXIF Data Viewer

View hidden EXIF metadata in JPEG photos - camera, lens, exposure, GPS. Open GPS…

Share

Embed this tool

Add this free tool to your website. Copy and paste the code: