JSON Formatter & Validator
Free, SEO-friendly JSON formatting tool with built-in validation using JSON.parse
About JSON Formatter & Validator
If you’ve ever tried to work with messy, unformatted JSON, you know how frustrating it can be. Our JSON Formatter & Validator makes it super easy to clean up your JSON data, so it’s readable, organized, and free of errors in just a few clicks.
Whether you’re a developer working with APIs, a student learning about data, or just someone tired of looking at jumbled-up JSON, this tool is here to help.
What it does:
Formats your messy JSON into a nice, readable structure
Validates your JSON to make sure everything’s working right
Highlights any mistakes like missing commas or quotes, so you can fix them quickly
Works with raw JSON text or uploaded JSON files
Why it’s helpful:
No more errors: The validator catches issues before they mess up your code.
Easier debugging: With your JSON neatly formatted, it’s way easier to spot mistakes.
Saves you time: Instead of cleaning up JSON by hand, just paste it in, and let the tool do the hard work.
If you’re dealing with APIs, configuration files, or just need to keep your data structured, this tool will make your life a lot easier.
How to Structure JSON Correctly
JSON (JavaScript Object Notation) is a format for storing and exchanging data. It’s simple, lightweight, and easy to understand—but it needs to follow a specific structure. Here’s a quick guide:
Basic JSON Structure:
{ “key”: “value”, “key2”: “value2” }Objects are enclosed in curly braces {}.
Key-value pairs are written as “key”: “value”, with a colon : separating them.
Values can be strings, numbers, arrays, booleans (true/false), or other objects.
Example of a Valid JSON:
{ “name”: “John Doe”, “age”: 30, “email”: “johndoe@example.com”, “isActive”: true, “address”: { “street”: “123 Main St”, “city”: “Somewhere” }, “phoneNumbers”: [“123-456-7890”, “987-654-3210”] }Important Notes:
Always use double quotes (“) for both keys and string values.
Objects are separated by commas , (but no trailing comma after the last item).
JSON is case-sensitive—”name” is different from “Name”.
Common JSON Mistakes to Avoid
Here are some common mistakes people make when working with JSON:
1. Forgetting to use double quotes for keys and string values:
Incorrect:
{ name: “John” }
Correct:
{ “name”: “John” }
2. Adding a comma after the last item in an object or array:
Incorrect:
{ “name”: “John”, }
Correct:
{ “name”: “John” }
3. Mismatched brackets or braces:
Incorrect:
{ “name”: “John”, “age”: 30 }
Correct:
{ “name”: “John”, “age”: 30 }
4. Incorrect nesting of objects or arrays:
Incorrect:
{ “name”: “John”, “addresses”: “123 Main St” }
Correct:
{ “name”: “John”, “addresses”: [“123 Main St”] }
With these tips in mind, you’ll be able to structure your JSON correctly and avoid common pitfalls. And if you ever run into issues, our JSON Formatter & Validator is here to help!