JSON Prettifier

Format messy JSON into a readable, indented structure. Supports JSON and JSONL.

Input JSON

{"names":["jack","john","alex"],"hobbies":{"jack":["programming","rock climbing"],"john":["running","racing"],"alex":["dancing","fencing"]}}

Formatted JSON

Options

Indentation

Spaces

Tabs

Spaces per indent

Settings

Auto-prettify on input

Support JSONL (one JSON per line)

About JSON Prettifier

The JSON Prettifier is an essential tool for developers working with JSON data. It takes compact, minified, or messy JSON and formats it into a clean, human-readable structure with consistent indentation. This makes it much easier to read, understand, and debug your data.

Features

Client-Side Processing: Your data is never uploaded to a server, ensuring privacy and security.
Custom Indentation: Choose between tabs or a specific number of spaces for your formatted output.
JSONL Support: Format newline-delimited JSON (JSONL), where each line is a separate JSON object.
File Handling: Easily import a JSON file from your computer or download the formatted output.
Error Handling: Get instant feedback if your input is not valid JSON.