---
language: en
title: "JSON-LD"
description: "JSON-LD is a format for linked data used in page markup. See how it relates to Schema.org and how to check syntax and editorial consistency."
canonical: "https://tropk.ai/en/resources/glossary/json-ld"
last_modified: "2026-10-12T16:14:56.376Z"
---

# JSON-LD

Reviewed on 2026-10-06.

## What it means

JSON-LD stands for JavaScript Object Notation for Linked Data. It is a format for expressing data and relationships in a JSON-based structure. On web pages, it usually appears in a script block with the type application/ld+json. The block’s content is a representation of data, not an instruction to run interface features.

## Why it matters for marketing

For marketing and [SEO](/en/resources/glossary/seo), separating this representation from the visible text can make markup easier to maintain. The key is to ensure both versions continue to say the same thing. When a CMS updates a title, date, or product but the JSON-LD remains outdated, the page provides conflicting information, even if it looks correct.

## Example in practice

An article page has the title “How to compare tools” and identifies the person responsible for it. Its JSON-LD can use Article, headline, and author to represent these facts. If an empty CMS field generates a fictional person or the date changes with each visit, the format is still JSON-LD, but the content no longer accurately represents the publication.

## How to apply or check

Validate the JSON and the vocabulary used. Check the fields in the served [HTML](/en/resources/glossary/html-the-web-s-markup-language) and in the rendered document when it is generated with JavaScript. Compare names, URLs, and dates with the published content. A useful test can find data discrepancies or missing markup; it is not enough to check whether a script with the expected type exists.

## Important distinctions

JSON-LD is different from [Schema.org](/en/resources/glossary/schema-org): the former is a format, while the latter can provide the vocabulary. It is also not a format required by every AI system. Google recommends JSON-LD for [structured data](/en/resources/glossary/structured-data) when feasible, but technical validity does not guarantee special display. False information remains false in any serialization.

## Sources and references

- [Introduction to structured data markup in Google Search](<https://developers.google.com/search/docs/appearance/structured-data/intro-structured-data>) — Google Search Central
- [Getting started with schema.org](<https://schema.org/docs/gs.html>) — Schema.org

## Continue a leitura

- [Structured data](</en/resources/glossary/structured-data>)
- [JavaScript rendering](</en/resources/glossary/javascript-rendering>)
- [Schema.org](</en/resources/glossary/schema-org>)

## About the author

[Vinicius Pacheco](</en/team/vinicius-pacheco>)

Responsible for Tropk’s technical content, focusing on crawling, indexing, structured data, and agent access to content.

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