Paste or upload
Enter content manually or drag a .json file.
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Developer tool
JSON Formatter and Validator
Paste or upload JSON to check its syntax, detect errors, format it into a readable structure or minify it for production.
Your content is processed locally in your browser and is never sent to SG Hub servers.
Editor and validator
Your content is never sent to or stored on a server.
Indentation
Input JSON
Paste your code or upload a JSON file.
You can also drag a .json file onto the editor.
154
Characters
10
Lines
154.0 B
Size
Result
The formatted or minified result will appear here.
154
Characters
10
Lines
154.0 B
Size
Valid JSON
The content is valid JSON.
Local processing
Your content is never sent to or stored on a server.
How it works
Review and organize JSON without installing software
JSON is a data exchange format commonly used by APIs, web applications, configuration files, databases and software projects. A misplaced character can prevent an application from reading the content correctly.
Validate
Check the syntax and locate possible errors.
Format or minify
Choose a readable structure or compact version.
Copy or download
Save the result as a new JSON file.
Frequently asked questions
Questions about the JSON formatter
Is the JSON formatter secure?
Yes. All processing takes place locally in your browser. SG Hub does not receive or store the content you paste or upload.
How can I find the location of a JSON error?
The tool analyzes the syntax and, when the browser provides the required information, displays the approximate line and column where the error occurred.
What is the difference between formatting and minifying JSON?
Formatting adds line breaks and indentation to improve readability. Minifying removes unnecessary spaces and line breaks to reduce the content size.
Can I upload a JSON file?
Yes. You can select or drag a file with the .json extension, validate it, format it, minify it and download the result.
Does the tool change my data?
It does not change property names or values. It only reorganizes formatting or removes unnecessary whitespace using JSON.parse and JSON.stringify.