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ENV File Parser
.ENV
// about this tool

ENV File Parser Online

Updated 2026-10-24

Parse a .env file and convert it to JSON, YAML, docker-compose, Kubernetes or shell exports, and, more usefully, find out what it really contains. A .env is deceptively simple: a trailing comment truncates a value, a duplicate key silently overrides an earlier one, single quotes stop ${VAR} interpolating, and an unquoted value with a space behaves differently depending on who loads it. Every one of those is reported with the line it happened on.

Duplicates resolve the way dotenv resolves them: last definition wins, so the output shows what would actually load, not what the file looks like it says. Nothing is uploaded: a .env is usually the most sensitive file in a repo, so it is parsed entirely in your browser, and any value that looks like a real credential is flagged before you copy the result anywhere.

// how to use

  1. 1 Paste the contents of a .env file, or upload it; it is read in your browser, never sent anywhere.
  2. 2 Pick an output format from the tabs.
  3. 3 Read the issues list underneath. That is where the duplicate keys, stray comments and quoting mistakes show up.

// examples

A trailing comment silently changes the value
Input
DB_HOST=localhost   # primary
Output
DB_HOST = "localhost"
note: a trailing comment was stripped. Quote the value if the "#" is meant to be part of it.
Duplicate keys, the last one wins
Input
DB_PASSWORD=first
DB_PASSWORD=second
Output
DB_PASSWORD = "second"
warning: duplicate of the definition on line 1. dotenv keeps the LAST one, so the earlier value is dead.
Converted to docker-compose
Input
APP_ENV=production
APP_DEBUG=false
Output
environment:
  APP_ENV: production
  APP_DEBUG: "false"

// common uses

Turning a .env into a docker-compose or Kubernetes environment block Finding out why a variable is not the value you thought it was Generating a .env.example that actually matches the current .env Auditing an inherited .env for duplicate keys and quoting mistakes

// faq

Which output formats are available?
JSON, YAML, docker-compose (an environment: block), Kubernetes (an env: list of name/value pairs), shell exports, a normalised .env, and a .env.example with every value blanked out, which is the file people forget to update when they add a variable.
What does it actually check for?
Duplicate keys (and which one wins), trailing comments that silently truncate a value, unquoted values containing spaces, keys that are not valid environment-variable names, unterminated quotes, lines with no "=" at all, and single-quoted values where ${VAR} will not interpolate.
Which value wins when a key appears twice?
The last one. That matches dotenv and most loaders, so the output shows what would actually load rather than what the file appears to say. The earlier definition is flagged as dead.
How are quotes handled?
Double quotes interpret escapes like \n and \t and can span multiple lines; single quotes are entirely literal, including any ${VAR} inside them; unquoted values are trimmed and cut at the first " #". Each of those is the real dotenv behaviour, and each one surprises somebody.
Is my .env uploaded?
No. A .env is usually the most sensitive file in a repository, so all parsing happens in your browser, including when you use the upload button, which reads the file locally. The tool also flags any value that looks like a real credential before you copy the output somewhere public.

// works with your data

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Use this via API

Get a free API key → 
curl -X POST https://thesnaptools.com/api/v1/tools/env-parser \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"DB_HOST=localhost # primary"}'