Guides / Development
What is JSON?
A plain-English explanation of JSON for APIs, configs, and debugging.
Updated 2026-08-24
## The short answer
JSON is a text format for structured data. APIs and config files use it because both humans and programs can read it.
## Building blocks
- Objects: `{ "name": "Ada" }`
- Arrays: `[1, 2, 3]`
- Strings, numbers, booleans, null
## Why formatting helps
Minified JSON is hard to debug. Beautifying reveals missing commas and braces quickly.
## Practice
Paste a payload into the JSON Formatter or JSON Validator on this site.
Related tools
- JSON Formatter — Format, validate, minify and beautify JSON instantly in your browser.
- JSON Validator — Check whether a JSON string is valid and see clear error messages.