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.env file parser

Parse a .env file into a key/value table, flag duplicate keys and secrets, and export JSON.

Parsed entirely in your browser — nothing is sent anywhere.

5 variables1 duplicate key
KeyValue
NODE_ENVproduction
PORT3000
DATABASE_URLpostgres://user:pass@localhost:5432/app
API_KEYsk_live_0123456789abcdef
PORT8080

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