JSON Formatter & Validator
Why Format and Validate JSON?
Messy JSON can be a headache! Tooly is here to help you make sense of it all. Formatting and validating is important because it:
- Improves Readability: Properly indented JSON is much easier for humans to read and understand the data structure.
- Helps Debugging: Validation instantly catches syntax errors like missing commas or brackets, saving you time finding mistakes.
- Ensures Compatibility: Valid JSON guarantees that your data can be correctly parsed by other applications and systems.
- Makes Collaboration Easier: Consistently formatted code is easier for teams to work with and maintain.
Just paste your code, and Tooly will clean it up and check it for errors instantly!
What is JSON?
JSON stands for JavaScript Object Notation. It's a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. It has become the standard format for transmitting data between web servers and web applications (often replacing XML).
JSON is built on two structures:
- A collection of name/value pairs: Realized as an object, dictionary, hash map, etc. (e.g., `{"name": "Tooly"}`).
- An ordered list of values: Realized as an array or list (e.g., `["QR Code", "Converter"]`).
These structures allow complex data hierarchies to be represented easily.
How to Use Tooly's JSON Formatter
Paste Your JSON
Copy your raw JSON data and paste it into the left input panel.
Watch the Magic (Auto Format On)
If "Auto Format" is checked (default), Tooly will instantly format and validate the JSON in the right panel as you type or paste.
Manual Format (Auto Format Off)
If you uncheck "Auto Format", the "Format JSON" button will appear. Click it whenever you want to format and validate the input.
Check for Errors
If your JSON is invalid, an error message will appear below the input panel, explaining the issue (e.g., missing comma, unexpected token).
Copy the Result
Once formatted and valid, click the copy icon in the top-right corner of the output panel to copy the clean JSON to your clipboard.