Label Env Tabs

Browser safety labels

See the environment before you act.

Turn look-alike local, test, staging, and preview pages into unmistakable browser contexts—with private URL rules you control.

See it in action Read the privacy policy →
  • No account
  • No analytics
  • Local configuration

The problem

Same screen.
Wrong environment.

When every deployment looks identical, context becomes a memory test. Label Env Tabs puts the answer on the page before the risky click—not after it.

Built for real workflows

One clear signal, backed by precise rules.

Start simple, then make each label as specific as your environments demand.

Page signals

Mark the page, not just the toolbar.

Add a badge or Corner Triangle, tune its position and color, and carry the signal around the viewport with an optional border.

URL rules

Match exactly what matters.

Combine globs or regular expressions with include and exclude Matchers. The first enabled Label that matches wins.

^https://(?<ticket>\d+)(?:-[^.]+)?\.preview\.example\.test/.*$

Branch context

Turn captures into useful labels.

Reuse ticket or branch values in the page Label, tab-group title, and an optional HTTPS ticket link.

Chrome tab groups

Keep related environments together.

Optionally organize matching tabs with Chrome’s native groups while leaving pinned tabs and user-owned groups alone.

The actual extension

Designed to disappear—until context matters.

A preview commerce page with a blue Ticket 482 corner marker and viewport border
On the page A captured ticket number becomes a visible corner marker and optional ticket link.
The Label Env Tabs rule editor with a live URL test and marker preview
In the workbench Test a URL and see the winning rule before you save it.

Local by design

Your URLs stay in your browser.

Label Env Tabs has no account, analytics, advertising, backend, or automatic outbound requests. Matching and marker rendering happen locally.

  • 01 Configuration stays in Chrome local storage.
  • 02 Website access is optional and requested by capability.
  • 03 JSON leaves the browser only when you export it.
Read the privacy policy

Coming to Chrome

Clearer tabs are on the way.

The first Chrome Web Store release is being prepared. The product and privacy details are ready now.