JSON Viewer & Formatter

About This Online JSON Viewer & Formatter

This free online JSON Viewer and Formatter provides a powerful and easy-to-use solution for working with JSON data. Whether you need to quickly inspect a JSON response from an API, debug complex data structures, or simply format unreadable JSON, this tool has you covered.

Key features include:

• Interactive Tree View: Easily navigate through nested JSON objects and arrays.
• Syntax Highlighting: Visual cues for different data types (strings, numbers, booleans, null) for better readability.
• Search Functionality: Quickly find specific keys or values with options for case sensitivity and regular expressions.
• Error Detection: Pinpoint syntax errors with exact position highlighting, making debugging a breeze.
• Auto-Fix Unquoted Keys: Automatically quotes unquoted property names if detected as the error cause.
• Relaxed Parsing: Toggle to parse non-standard JSON (e.g., unquoted keys, comments) using JSON5.
• Expand/Collapse All: Instantly expand or collapse the entire JSON tree or individual nodes.
• Copy Path: Copy the exact path of any node for quick referencing in your code.
• Edit & Save: Modify values directly within the tree view and download the updated JSON.
• Minify JSON: Compress JSON to a single line and copy to clipboard.
• Export to YAML: Convert and download JSON as YAML format.
• Theme Switching: Toggle between light and dark modes for comfortable viewing.
• File Upload/Download: Load JSON from a file or save the current JSON to your device.

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format. It's easy for humans to read and write, and easy for machines to parse and generate. JSON is built on two structures:

1. A collection of name/value pairs. In various languages, this is realized as an object, record, struct, dictionary, hash table, keyed list, or associative array.
2. An ordered list of values (e.g., `["apple", "banana", "cherry"]`). In most languages, this is realized as an array, vector, list, or sequence.

JSON is widely used in web applications for sending data between a server and web browser, as an alternative to XML.

Frequently Asked Questions (FAQ)

Is this JSON viewer free to use?

Yes, this online JSON Viewer and Formatter is completely free to use for all your JSON viewing and formatting needs.

Is my JSON data secure?

Your JSON data is processed entirely within your browser. It is not sent to any server, ensuring your data remains private and secure.

Can I edit JSON directly in the viewer?

Yes, you can double-click on any value (or key for objects) in the tree view to edit it directly. After editing, the entire JSON structure will update.

How do I upload a JSON file?

Click the "Upload JSON" button to select a `.json` file from your local machine. The content will automatically load into the editor and viewer.

What if my JSON has errors?

If your JSON is invalid, the viewer will display an error message indicating the exact position of the syntax error, helping you quickly identify and fix issues. For unquoted keys, it will automatically fix and quote them if not in relaxed mode.

How does Relaxed Parsing work?

Toggle Relaxed Parsing to handle non-standard JSON formats, such as unquoted property names, single quotes, trailing commas, and comments, using the JSON5 standard.

Can I export to other formats?

Yes, you can minify JSON and copy it, or export the data as YAML for download.