Validate JSON Online

Upload a JSON data file and select VALIDATE as the output. Converter processes the file online and gives you a text report confirming valid JSON syntax.

Choose a file to convert

How to validate json

  1. Upload a .json file.
  2. Choose VALIDATE and start the conversion.
  3. Download the VALIDATE result.

Example

Upload api-response.json and download api-response.txt.

When to use this conversion

  • Check whether a JSON export parses successfully.
  • Confirm syntax before importing data into another tool.
  • Catch malformed JSON early in a handoff workflow.

Best practices

  • The file must contain valid JSON; comments and trailing commas are not accepted.
  • Validation checks syntax, not whether the data matches an application schema.
  • Keep a copy of the original file before replacing it in a project.