Paste your .env file content and instantly detect formatting errors, duplicate keys, empty values, invalid variable names, and mismatched quotes. All validation runs locally in your browser.
Environment files (.env) are widely used to store configuration variables for applications. A malformed .env file can cause silent bugs — missing quotes, duplicate keys, or invalid variable names can break your app without clear error messages.
This validator checks for common .env issues: invalid KEY=VALUE format, duplicate variable names, empty values, unquoted values with spaces, mismatched quotes, and trailing whitespace. All processing happens locally in your browser.
Paste your .env file content in the editor.
View validation results with errors, warnings, and info.
Fix the highlighted issues in your original file.
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