.env to json & typescript config converter
typetools
instant, client-side type converter • 0ms network latency
{
"NODE_ENV": "production",
"PORT": 8080,
"ENABLE_EDGE_CACHE": true,
"MAX_WORKER_THREADS": 4,
"PUBLIC_SITE_URL": "https://typetools.dev",
"API_TIMEOUT_MS": 2500
}step-by-step integration guide
technical specification differences & end-to-end conversion workflow
Parsing Dotenv (.env) Lexical Quirks into Structured JSON and Type-Safe Schemas
Application secrets and runtime configuration are almost universally managed locally in .env files following POSIX shell variable assignment syntax (KEY=VALUE), yet cloud deployment targets—such as AWS ECS Task Definitions, Kubernetes ConfigMaps, Vercel CLI configs, and Cloudflare Workers—often require environment configurations formatted as valid JSON objects. Meanwhile, in TypeScript applications, reading process.env.PORT or process.env.ENABLE_CACHE always returns string | undefined, leading to classic bugs where the string "false" evaluates as truthy in a boolean condition (if (process.env.ENABLE_CACHE)).
Handling Quoted Multiline Secrets, Inline Comments, and Type Coercion
Our .env-to-JSON engine runs 100% client-side in your browser so your production API keys and database connection URIs never leave your machine. The lexer accurately handles dotenv edge cases that break simple line splitters: values containing equals signs (such as Base64 strings or PostgreSQL connection URLs postgres://user:pass@host:5432/db?sslmode=require), optional export prefixes, inline comments (# comment) outside of quotes, and multi-line RSA private keys wrapped in double quotes. Once tokenized, the converter outputs clean RFC 8259 JSON and can also switch directly to generating a TypeScript NodeJS.ProcessEnv interface or a runtime Zod environment validation schema with automatic numeric and boolean coercion.
frequently asked questions
common developer questions answered
q:Is it safe to paste a production .env file containing secret API keys into this converter?
Yes. Our Content-Security-Policy (CSP) and local Web Worker architecture guarantee that 0 bytes leave your browser. You can even turn on Airplane Mode before pasting your .env file.
q:How does the parser handle .env values that contain '=' signs like connection strings or Base64 keys?
Instead of splitting on all '=' characters, the lexer splits strictly on the first assignment operator after the variable identifier, preserving any '=' characters inside query strings or Base64 padding.
q:Can I also generate a Zod validation schema or TypeScript ProcessEnv interface from my .env keys?
Yes. Once your .env file is converted into a JSON object in the workspace, click the 'zod' or 'typescript' output mode pill at the top to immediately generate a strict schema for your environment variables.