Supports KEY=VALUE, quoted values, comments (#), and blank lines
Ready to parse
Paste your .env content and click Parse// inspect .env key-value pairs, quotes, comments & duplicates
Parse and inspect .env files instantly. Detect key-value pairs, quoted values, comments, blank lines, and duplicate keys in your dotenv configuration.
Ready to parse
Paste your .env content and click ParseCopy the contents of your .env file and paste it into the input area on the left.
Hit "Parse .env" to instantly analyze all key-value pairs, comments, and structure.
Switch between Table View and JSON View. Copy as JSON or download the parsed result.
A .env (dotenv) parser that reads your configuration file and breaks it down into structured, inspectable entries. It handles all standard dotenv syntax including single/double quoted values, inline comments, and multi-line structures — highlighting any issues like duplicate keys or malformed lines.
A .env file is a plain-text configuration file used in software projects to store environment variables — settings like API keys, database URLs, and app configuration. It keeps sensitive data out of your source code and version control.
Yes. Both single-quoted ('value') and double-quoted ("value") values are detected and parsed. The parser extracts the inner value and labels the quote type in the output table.
The parsing is handled entirely in your browser via JavaScript. Your .env data never leaves your device, making this tool safe to use with real credentials and secrets.
The parser tracks every key it has seen. If the same key appears more than once in your .env file, subsequent occurrences are flagged with a "DUPE" badge. In most frameworks, the last value wins — duplicates can cause unexpected behavior.
Any non-blank, non-comment line that does not contain an = sign is flagged as invalid. This typically indicates a typo or malformed entry that would cause parsing errors in some dotenv libraries.
Yes. Use the "Copy JSON" button to copy the parsed key-value pairs as a JSON object, or click "Download" to save the result as a .json file.
A .env file parser is a tool that reads the contents of a .env configuration file and breaks it down into structured, inspectable data. Instead of reading a raw text file and mentally tracking each line, a parser gives you a clean table of keys, values, types, and flags — making it easy to audit your configuration at a glance.
The dotenv format is simple by design: each line is either a comment (starting with #), a blank line, or a KEY=VALUE pair. But even in simple formats, edge cases accumulate. Quoted strings, empty values, duplicate keys, and lines missing an equals sign can all cause subtle bugs in production environments.
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Configuration files grow over time. What starts as five environment variables can balloon to fifty or more across database settings, API credentials, feature flags, and third-party service URLs. In large projects, .env files are often maintained by multiple developers — leading to inconsistencies, outdated keys, and silent conflicts.
A dedicated parser makes it easy to:
The dotenv format follows a few straightforward conventions, though different libraries interpret edge cases differently. Here's what this parser handles:
Basic key-value pairs: The most common form is KEY=value. No spaces around the equals sign are required, though some parsers strip surrounding whitespace from keys and values automatically.
Quoted values: Values can be wrapped in single quotes ('value') or double quotes ("value"). Double-quoted values typically support escape sequences like \n for newlines. Single-quoted values are treated as literal strings. This parser detects the quote type and extracts the inner value.
Comments: Lines starting with # are comments and are ignored during parsing. This parser identifies and labels them, so you can see your comment density at a glance.
Blank lines: Empty lines are valid and common for readability — grouping related variables together. This parser counts and labels them without flagging them as errors.
Invalid lines: Any line that is not blank, not a comment, and does not contain an = character is flagged as invalid. These lines would cause parse failures in strict libraries.
Even experienced developers make mistakes in .env files. Here are the most frequent issues this parser helps catch:
Duplicate keys: When the same variable name appears twice, the behavior depends on which parser your framework uses. Some take the first value, some take the last. Either way, duplicates indicate a configuration conflict that should be resolved.
Unclosed quotes: A value that starts with a quote but doesn't end with the matching quote will be parsed incorrectly. The value may include line-continuation characters or fail entirely depending on the library.
Spaces around equals: Some dotenv parsers are strict about whitespace. KEY = value may be parsed differently from KEY=value. If you notice unexpected behavior, trimming spaces around the equals sign often resolves it.
Empty values: KEY= is a valid dotenv entry with an empty string value. Some applications check for empty strings as part of their validation — this parser flags empty values so you can verify they're intentional.
Exporting your .env file as JSON is useful in several scenarios. Documentation teams can generate configuration references without exposing actual values. CI/CD pipelines can compare expected vs. actual keys. Developers onboarding to a project can see the full list of required environment variables without needing access to the actual file.
This parser produces a structured JSON object containing each key and its parsed value, making it straightforward to integrate into automated workflows or documentation pipelines.
Your .env files contain sensitive information — database passwords, API tokens, and private keys. This parser operates entirely in your browser. Nothing is transmitted to any server. The parsing logic runs as client-side JavaScript, so you can safely analyze production secrets without any risk of exposure.
For additional assurance, you can disable your network connection before pasting sensitive data. The tool works fully offline once the page has loaded.
The dotenv format originated with the Ruby dotenv gem and was popularized by the Node.js dotenv package. Today, virtually every major programming language has a dotenv library: python-dotenv for Python, godotenv for Go, vlucas/phpdotenv for PHP, and many more. While the core format is consistent, each library has slightly different rules for edge cases — making a format-agnostic parser like this one especially useful for polyglot teams.