Free Online JSON Editor, Formatter, and Validator

Welcome to FormatJson, your go-to online tool for editing, formatting, validating, and comparing JSON data. Whether you are a developer debugging REST API responses, a data analyst working with complex datasets, or a beginner learning web development, our JSON editor provides a fast, secure, and intuitive interface to manage your JSON files directly in your browser.

Why Use Our JSON Formatter?

• Format and Beautify: Instantly format minified or unreadable JSON into a clean, indented structure with syntax highlighting.
• Validate Syntax: Catch syntax errors, missing commas, trailing commas, and invalid data types in real-time as you type.
• Compare JSON (Diff Tool): Use our built-in diff tool to compare two JSON objects side-by-side and easily spot additions, deletions, and modifications.
• JSONPath Evaluator: Extract specific data points from deeply nested JSON structures using powerful JSONPath expressions.
• Multiple Views: Switch seamlessly between Tree, Text, and Table views to visualize your data in the way that makes the most sense for your workflow.
• Secure & Private: All processing happens locally in your browser using JavaScript. Your sensitive JSON data is never sent to our servers.

How to Format JSON

1. Paste your raw JSON string into the editor panel.
2. The editor will automatically parse, format, and colorize the JSON.
3. If there are syntax errors (like a missing quote or trailing comma), they will be highlighted with descriptive error messages.
4. Use the toolbar to switch between Tree, Text, and Table views for better visualization.
5. Click the "Copy" button to copy the formatted JSON back to your clipboard, or use the "Download" button to save it as a .json file.

How to Share JSON Data

You can easily share your JSON data with colleagues or friends directly from the editor without saving it to a server.

1. Paste or type your JSON data into the editor panel.
2. Click the Share JSON icon (it looks like a network node) in the toolbar.
3. A toast notification will confirm that the link has been copied to your clipboard.
4. Paste the link into your chat, email, or issue tracker. When someone opens the link, the data is automatically loaded into their editor.

Explore More Tools

Looking for more developer utilities? Check out our Blog to learn about all the other editors, formatters, and tools we offer to streamline your development workflow.