.env File Parser
Parse a .env file online, flag common problems such as duplicate keys, missing equals signs and unquoted values, mask secret-looking values, and export the result as a JSON object or shell export statements.
FreeOnline Tool
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How to Use
- Paste your .env content into the input box, or press "Load sample .env content" to see how it works
- The tool parses as you type and shows every line's KEY, VALUE and any detected problem in the table below
- Masking is on by default and hides values that look like secrets (fields named with KEY/SECRET/TOKEN/PASSWORD and similar keywords, or values that look like random strings); untick it to reveal the plain text
- In the export area, switch between the "JSON object" and "shell export" tabs and press "Copy" to copy that format
Features
- Parses a .env file into line-by-line KEY=VALUE entries, handling comment lines (#), the export prefix and values wrapped in single or double quotes
- Detects common problems automatically: duplicate keys, a missing equals sign, values containing spaces but no quotes, empty values, and key names that do not follow the uppercase-with-underscores convention (a hint only, never enforced)
- Masking: values are hidden behind **** when the key name contains keywords such as KEY, SECRET, TOKEN, PASSWORD or PWD, or when the value itself looks like a random string; one click toggles between masked and plain text
- Exports as a JSON object or as shell-ready export KEY=value lines, escaping values that contain special characters
- Parsing happens entirely in the browser - your content is never uploaded to any server
Use Cases
Tracking down .env mistakes
Paste a project's .env file to quickly find a missing equals sign or a duplicated key that is breaking startup
Sharing config safely with teammates
Use masked mode when showing the shape of your environment variables so screenshots and pastes do not leak real secrets
Converting to a code-friendly format
Export the .env content as a JSON object to drop into a Node.js config or a test script
Generating a shell environment script
Export export KEY=value lines for CI pipelines, Docker startup scripts or local shell initialization
FAQ
Is my .env content uploaded to a server?
No. All parsing, masking and export logic runs locally in your browser and nothing is sent anywhere.
How does it decide what to mask?
It checks whether the key name contains keywords such as KEY, SECRET, TOKEN, PASSWORD or PWD, or whether the value itself is a long enough string of mixed upper and lower case letters and digits with no spaces (in other words, it looks randomly generated). Either condition triggers masking.
Will a lowercase key name cause an error?
No. The .env convention is uppercase names separated by underscores, but that is a convention rather than a rule, so the tool shows a hint and still parses the pair normally.
Does it handle multi-line values or complex escaping?
Only single-line KEY=VALUE entries with basic single or double quoted values are supported. Values spanning multiple lines and shell-style complex escape sequences are not.