ENV Cleaner — remove noise from .env files
Strip duplicates, empty lines, comments, and trailing whitespace from any .env file. The cleaner keeps the last definition when duplicates exist — matching how dotenv behaves at runtime.
.env · transform
ENV Cleaner
Clean your .env file. Remove duplicates, empty values, comments, and trailing whitespace in one click.
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API_KEY=def DEBUG=true PORT=3000
What it does
- ▸Removes duplicate keys (keeps last)
- ▸Strips empty variables and empty lines
- ▸Optionally removes all comments
- ▸Trims trailing whitespace
- ▸Download clean .env instantly
Privacy
Runs 100% in your browser. Your .env never touches our servers.
client-side only
Usage examples
Case 1 · Duplicate keys
API_KEY=abc DEBUG=true API_KEY=def
DEBUG=true API_KEY=def
Case 2 · Empty + whitespace
NODE_ENV=production EMPTY= PORT=3000
NODE_ENV=production PORT=3000
Case 3 · Strip comments
# app config DATABASE_URL=postgres://... # debugging flag DEBUG=true
DATABASE_URL=postgres://... DEBUG=true
When to use this tool
- →Inherited a legacy .env with years of copy-paste cruft
- →Merged multiple .env files and want to dedupe the result
- →Preparing a clean .env to share with a teammate
- →Fixing a file your validator flagged with 20+ warnings
- →Normalizing CI-generated .env artifacts before deploy
Common mistakes
- ⚠Stripping comments before code review — comments often document why a key exists
- ⚠Assuming dedupe keeps the first value: this tool keeps the last (matches dotenv runtime)
- ⚠Running cleaner on a file you didn't validate first — syntax errors stay
- ⚠Committing the cleaned .env to git (commit .env.example instead)
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coming soon
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