JSON (JavaScript Object Notation) is a lightweight format for storing and transferring data. It’s easy for humans to read and easy for machines to parse. JSON is used everywhere on the modern web, including the WordPress REST API, plugins, theme configuration files, and AI integrations.
What JSON Looks Like
JSON organizes data in key-value pairs inside curly braces. A simple example: {“title”: “My Post”, “status”: “publish”, “author”: 1}. You can also nest objects and arrays to represent more complex data structures.
JSON in WordPress
- The WordPress REST API sends and receives data in JSON format
- Gutenberg blocks store their settings and content as JSON
- The theme.json file controls global design settings in block themes
- Many plugins use JSON files for configuration and data import/export
Why WordPress Builders Should Understand JSON
When you work with the WordPress API (for example, creating posts programmatically, building headless sites, or integrating with third-party tools), you’ll constantly send and receive JSON. Understanding its structure helps you debug issues faster.
Viewing JSON
Install a browser extension like JSON Formatter for Chrome or Firefox to make API responses readable. It turns a wall of text into neatly formatted, color-coded data.
Related: WordPress REST API
