Open .env files on your Mac.
.env .env.local .env.example .env.production
Environment variables for apps and frameworks. Loper colors keys and values, highlights secrets like API keys and lists every key in the outline.
Loper is a free, minimal editor for macOS that opens Environment files instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

Show the file as text
# DatabaseDATABASE_URL=postgres://app@localhost:5432/appDB_POOL_SIZE=10DB_SSL=true # APIexport API_KEY="sk-test-1234" # rotate monthlySTRIPE_SECRET_KEY='sk_test_abc'CALLBACK_URL="${BASE_URL}/callback"DEBUG=falseHow to open .env files
- Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
- Double-click your .env file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
- Want every .env file to open in Loper? Choose Loper › Make Loper the Default Editor….