Everything you need,
nothing you don't

Assign any color to any environment. The banner appears at the top of matching pages, giving you an instant visual signal that's impossible to miss.

• Choose from preset colors or define custom hex values
• Banner stretches full-width for maximum visibility
• Includes a text label so the environment name is always clear
• Works on any website — internal tools, admin panels, dashboards

Use familiar wildcard patterns to match URLs. No regex required — just asterisks and the URL fragments you care about.

• *.staging.* matches any staging subdomain
• localhost* matches all local development URLs
• admin.prod.myapp.com* matches a specific production tool
• First matching rule wins — order your rules by priority

Tailor the banner appearance to your preferences. EnvBanner stays out of your way while keeping you informed.

• Top or bottom banner placement
• Small, medium, or large banner height
• Adjustable opacity for a subtle or bold look
• Auto-collapse mode: banner shrinks to a thin colored edge after a delay

No build tools, no code changes, no server-side setup. Install from the Chrome Web Store and start adding rules immediately.

• Works with any web application out of the box
• No developer access or code deploys required
• Settings sync across Chrome profiles
• Import and export rules for team sharing

EnvBanner processes everything locally in your browser. Your data never leaves your machine.

• No external network requests
• No analytics or tracking
• No account or sign-up required
• Fully functional offline

EnvBanner has a minimal footprint. It doesn't inject scripts, modify page content, or slow down your browsing.

• Tiny extension size — under 50 KB
• No impact on page load performance
• Uses modern Chrome extension APIs (Manifest V3)
• No background processes when not needed