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Weavernote

JSON Formatter

Format, validate, and visualize your JSON data - completely free

Want to Organize Your Data Smarter?

Use Weavernote for AI-powered data extraction, organization, and visualization.

Why Use a JSON Formatter?

JSON (JavaScript Object Notation) is the most common format for data exchange on the web. However, it's often minified for transmission, making it impossible for humans to read.

Our tool helps you "beautify" minified JSON, validate its structure, and explore complex nested objects through an interactive tree view or a structured table viewer. It's essential for developers, data analysts, and anyone working with API responses.

Key Features

  • Beautify: Perfect indentation and spacing for readability.
  • Minify: Compress JSON for minimal file size.
  • Validate: Catch syntax errors instantly with clear feedback.
  • Tree Visualizer: Browse nested data with expand/collapse nodes.
  • Table View: View arrays of objects in a familiar, structured format.
  • Secure: All processing happens locally in your browser.
  • Free: No limits, no sign-ups, completely free forever.

How to Use

  1. Paste or Type: Enter your JSON data into the editor.
  2. Check for Errors: If the JSON is invalid, an error message will appear at the bottom with details.
  3. Format: Click "Beautify" to make it readable or "Minify" to compress it.
  4. Visualize: Switch to "Tree View" or "Table View" to explore the data hierarchy.
  5. Copy: Use the "Copy" button to save the formatted result to your clipboard.

Pro Tip: Table View is perfect for analyzing data sets and lists. If you have a large array of objects, the table will automatically generate columns based on the available keys.