IconVault logoIconVault
Sign in

Env Validator - Free Online Developer Tool | IconVault

Validate .env files online: syntax errors, duplicates, empty values, secret detection. Generates .env.example. Free, private.

All tools

Env Validator

Lint .env files, catch secrets

5 of 5 free uses left

Paste your .env contents. The validator checks syntax, duplicate keys, empty values and flags anything that looks like a committed secret. Nothing is uploaded.

5 of 5 free runs left.

.env contents

About this tool

IconVault's Env Validator lints your .env file before it causes a production incident: syntax errors (missing `=`, invalid key names), duplicate keys, empty values, unquoted values with spaces, and lowercase keys that break convention. Anything that looks like a secret (API keys, tokens, passwords) is flagged with a reminder to keep it out of git.

One click generates a clean .env.example with placeholders for secret values, safe to commit and share with your team. Copy or download it instantly. Free and runs fully in your browser, so your real secrets never leave your device.

Frequently asked questions

Popular searches

env validator.env validatordotenv validatorvalidate env fileenv file checkerdotenv linter.env linterenv syntax checkercheck .env fileenv file validator onlinedotenv checkervalidate dotenvenv example generator.env.example generatorgenerate env exampledotenv example creatordetect secrets in envsecret scanner envfind secrets in dotenvenv secret detectionduplicate env keysfind duplicate env variablesenv file best practicesdotenv best practicesenv variable namingscreaming snake case envempty env value checkenv file parserparse .env onlinedotenv parserenv config checkerenvironment variables validatorvalidate environment variablesenv file tooldotenv toolenv helpernode env validatordocker env file checkenv file lintlint dotenvenv quality checkdotenv qualityenv file analyzerenv security checkprevent committing secretsgitignore env remindersafe env exampleshare env templateteam env templateonboarding env fileenv documentation generator

More tools

Code Playground

Write HTML, CSS & JS with live preview.

JSON Formatter

Beautify, validate & minify JSON.

Base64 Encoder

Encode & decode text and files.

JWT Decoder

Inspect tokens without sending them anywhere.

Coming soon

CLI

Coming soon

Figma plugin

Coming soon

VS Code extension

Coming soon

Chrome extension

Coming soon

AI icon generator

Coming soon

Team workspaces

Coming soon

View all 10+ tools →