Env File Parser
Parse .env files online. Visualize key-value pairs in a table, detect format errors (missing =, duplicate keys, empty values), and export to JSON. Free, 100% client-side.
How to Use
- Paste your
.envfile contents into the text area. - Click Parse to visualize all key-value pairs in a table.
- Review the Notes column — warnings highlight empty values, duplicate keys, or non-standard names; errors flag lines that can’t be parsed.
- Click Export JSON to download the parsed data as a
env.jsonfile.
Example Input
# Database config
DB_HOST=localhost
DB_PORT=5432
DB_NAME=myapp
DB_PASSWORD="s3cr3t"
# API keys
API_KEY=
STRIPE_KEY=sk_live_abc123
# Duplicate example
APP_ENV=development
APP_ENV=productionThe parser will show DB_PASSWORD with quotes stripped, flag API_KEY as having an empty value, and warn that APP_ENV is a duplicate key.
Common .env Pitfalls Detected
- Missing = sign — the line cannot be parsed as a key-value pair.
- Empty value — the key exists but the value is blank; may cause runtime errors depending on your app.
- Duplicate key — the same key appears more than once; behavior depends on which dotenv library is used (first or last wins).
- Non-standard key name — keys should start with a letter or underscore and contain only letters, digits, and underscores.
FAQ
What .env syntax is supported?
Standard dotenv syntax: KEY=VALUE pairs, one per line. Supports quoted values (single or double quotes), inline comments are not stripped. Lines starting with # are treated as comments and skipped.
How are quoted values handled?
If a value is wrapped in single or double quotes (e.g. API_KEY="secret" or SECRET='value'), the surrounding quotes are stripped when displaying the parsed result.
What counts as an error?
Lines without an = sign are flagged as errors. Lines with an empty key are also flagged. Warnings are shown for empty values, duplicate keys, and non-standard key names (keys that don't match [A-Za-z_][A-Za-z0-9_]*).
Is my .env file sent to a server?
No. All parsing happens entirely in your browser using JavaScript. Your secrets never leave your machine.
What does Export JSON produce?
A JSON object where each valid key-value pair from the .env file becomes a property. Commented lines and parse errors are excluded. Duplicate keys are deduplicated (last value wins in a normal dotenv loader, but all are shown in the table with a warning).