JSON Formatter & Converter – Format, Validate & Convert JSON Online

What Is a JSON Formatter?

A JSON Formatter is a browser-based tool that helps you make JSON easier to read, inspect, and manage. You can paste JSON into the editor, import a file, and quickly format or minify the data without installing any software.

ToolsViewer's JSON Formatter can be used as a json validator online when you need to check whether your JSON is valid. If the JSON contains a syntax error, the tool identifies the parsing issue so you can correct it before formatting.

For easier reading, use json pretty print to add proper indentation and structure to nested objects and arrays. If you need a smaller version of your JSON, the json minifier removes unnecessary whitespace from the output.

The built-in json viewer also provides a collapsible Tree view, making it easier to explore large objects and arrays. If you need to make changes directly, the json editor online lets you edit the source before formatting or downloading the result.

How to Use JSON Formatter

Step 1: Add Your JSON
Paste your JSON into the editor, load the sample data, or import a .json or .txt file.

Step 2: Choose Formatting Options
Select Beautify or Minify and choose your preferred indentation: 2 spaces, 4 spaces, or Tab. You can also enable Sort Keys or Strip Nulls when needed.

Step 3: Format and View the Data
Click Format to create readable JSON or Minify to remove unnecessary spaces. Open Tree view to explore objects and arrays in a collapsible structure.

Step 4: Copy or Download
Copy the formatted result or download it when you need a separate JSON file.

JSON Formatter Features

• Format and beautify JSON
• Minify JSON
• Online JSON validation
• 2-space, 4-space, and Tab indentation
• Sort JSON keys
• Strip null values
• Collapsible JSON Tree view
• Import .json and .txt files
• Copy formatted output
• Download JSON output
• Browser-based JSON editor

Common Use Cases

Pretty-Print API Responses
Use json pretty print to turn compact or difficult-to-read API responses into properly structured JSON.

Minify JSON Data
The json minifier removes unnecessary whitespace when you need a more compact JSON string.

Check JSON Syntax
Use the json validator online functionality to find parsing errors before using JSON in an application, API, or configuration file.

Explore Large JSON Files
Open the result in the json viewer and expand individual objects and arrays without scrolling through a long block of text.

Edit JSON Online
Use the json editor online to make changes to your data before formatting, copying, or downloading it.

Prepare JSON for Documentation
Format and clean sample JSON before adding it to technical documentation, tickets, tutorials, or code examples.

Supported Formats

JSON Formatter works with JSON text and common JSON file inputs:

• JSON entered in the editor
• .json files
• .txt files containing JSON
• Formatted JSON output
• Minified JSON output
• Downloadable JSON files

Working with XML instead? Try XML Formatter. Browse more utilities on all tools.

FAQ