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AllgoTool directory
Calculate, convert and clean up your work.
Useful tools for
your business and your everyday.
35 tools · No account required · Most work in your browser
All tools
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Choose a tool, enter your data, and get your result.
Spreadsheet and image tools process files in your browser.
From profit margins to clean spreadsheets, without an account.
Web utilities
JSON Formatter and Validator
Validate JSON and make it readable or compact.
How to use the json formatter and validator
- Enter the values or text requested by the tool.
- Choose the available options and run the tool.
- Review the result.
Worked example
{"name":"AllgoTool","free":true} can be pretty-printed with indentation or minified onto one line.
Understanding the result
Input must be valid JSON with quoted object keys. Formatting parses and rewrites JSON; very large numeric values may lose precision in JavaScript.
Frequently asked questions
Can I use comments or trailing commas?
No. Standard JSON does not allow comments or trailing commas. Remove them before formatting.
Is this JSON formatter free to use?
Yes. This version of AllgoTool is free to use and does not require an account. The tool’s limits are explained above.
Supported inputs and limitations
Check your input and review the result. The tool processes data locally and may have different behaviour from specialised software.
Need another utility? Browse web utilities tools or see all free tools.