Stop guessing.
Start seeing.
EnvBanner adds color-coded environment banners to your browser tabs so you always know where you are.
Free download. No account required.
We've all been there
Deleted production data
Thought you were on staging. You weren't. Now you're restoring a backup at 2 AM.
Wrong environment deploy
Pushed config changes to production instead of staging. Users noticed before you did.
Debugging the wrong server
Spent hours chasing a bug that only exists in production — while staring at staging logs.
Built for developers who ship
Color-coded banners
Instantly see which environment you're on with unmistakable colored banners across the top of the page.
Pattern matching
Use glob-style URL patterns to match any environment — staging subdomains, localhost ports, custom domains.
Zero configuration
Works out of the box. Add a URL pattern and a color — that's it. No build steps, no code changes.
Fully customizable
Adjust banner size, position, opacity, and auto-collapse behavior to fit your workflow.
Privacy focused
Everything runs locally. No data leaves your browser. No analytics, no tracking, no account.
Lightweight
Minimal footprint. No impact on page load times. Just a thin banner when you need it.
Up and running in 30 seconds
Install the extension
One click from the Chrome Web Store. No permissions beyond the active tab URL.
Add your URL patterns
Map URL patterns to colors and labels. Use wildcards to match entire subdomains.
See banners everywhere
Navigate to any matching URL and the banner appears. Instant, automatic, reliable.
Ready to stop guessing?
Install EnvBanner and never worry about which environment you're on again.
Add to Chrome — It's Free