JSON Editor

How do I edit a config.JSON file?

Editing a config.JSON file requires careful attention to syntax since configuration errors can break applications. Use our JSON Editor at jsonconsole.com/json-editor which provides real-time validation to prevent syntax errors. Open your config.json file in the editor, and it will show the structure in both code and tree view. Make your configuration changes while the editor validates each modification instantly. Common config.json edits include changing settings values, adding new configuration options, or updating API endpoints. The tree view is particularly helpful for navigating complex configuration hierarchies without getting lost in nested objects. Always backup your original config.json before making changes. After editing, use our JSON Formatter to ensure proper indentation and structure. Test your application after updating the configuration to verify changes work as expected. Our editor prevents common mistakes that could render your application non-functional.
Last updated: December 23, 2025

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