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.env Diff
Structural Diff & Comparator
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Original ENV0 lines
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Modified ENV0 lines
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Visual Diff Comparison
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Enter original and modified text above, then click Compare (⌘↵).

.env Diff & Variable Comparison Tool

Compare two .env files online side-by-side. Spot missing environment keys, altered values, and staging vs production drift in your browser.

Side-by-side view
Missing variable detection
Changed value highlight
100% in-browser privacy
Step-by-Step Guide

How to Use .env Diff Online

Follow these quick steps to process your data online directly in your browser with zero latency and 100% privacy.

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Step 1Parses both dotenv files into key-value maps.
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Step 2Compares keys to find additions, deletions, and changed values.
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Step 3Outputs side-by-side or unified diff comparison.
Demonstration

Example Input & Output

Compares environment variables key by key, highlighting missing variables, changed values, and newly added secrets.

Original .env (Left)
PORT=3000
NODE_ENV=development
DEBUG=true
DATABASE_URL=postgres://localhost:5432/dev_db
Modified .env (Right)
  PORT: 3000 -> 8080
  NODE_ENV: development -> production
  DEBUG: true -> false
  DATABASE_URL: postgres://localhost:5432/dev_db -> postgres://db.prod:5432/prod_db
+ SENTRY_DSN: https://example.com/sentry
Applications

Common Use Cases

Staging vs Production Env Audit

Ensure all required environment variables in production exist in staging and .env.example.

Deployment Troubleshooting

Verify that new release variables have been configured across servers.

Guidelines

Specifications & Gotchas

Masking Sensitive Secrets

Always use dummy tokens when diffing real production secrets.

Knowledge

Frequently Asked Questions

How do I compare two .env files?

Paste your baseline .env file on the left and comparison file on the right; differences and missing keys are displayed immediately.

Workflow

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