# Environment Marker

> Use the Environment Marker extension and prevent screw-ups with the (programming) environments.

Canonical page: [https://chrome-stats.com/d/environment-marker-extension](https://chrome-stats.com/d/environment-marker-extension)

## Overview

- **ID:** `environment-marker-extension`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Environment Marker
- **Category:** web-development,appearance,tabs
- **Daily users:** 249
- **Weekly downloads:** 11
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.2.1
- **Last updated:** 2025-03-08
- **First published:** 2025-02-20
- **Size:** 160 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/environment-marker-extension/)
- **Website:** [https://environmentmarker.io](https://environmentmarker.io/)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/environment-marker-extension/privacy/](https://addons.mozilla.org/firefox/addon/environment-marker-extension/privacy/)

## Description

This extension helps you visually distinguish between different environments by adding a colored label to specified websites based on URL configurations. It supports regular expressions (including wildcards), a color picker, and positioning preferences.

Why Use Environment Marker?
In IT projects, working with multiple environments—such as development, QA, staging, and production—is common. However, since these environments often look identical, mistakes can happen.

Have you ever intended to run a "quick test" in the development environment, only to realize too late that you were actually in production? Misconfigurations and accidental changes can easily occur because the only visible difference is the discreet URL in the browser's address bar.

That is where Environment Marker comes in. This free and open-source extension lets you define your project’s environment URLs and assign a colored label in the browser window to identify them at a glance.

No more screw-ups in the production environment!

Features:
- Customizable labels – Choose label colors with a color picker.
- Regular expression support – Use regex patterns to match URLs dynamically.
- Flexible label positioning – Place the label in any corner: Top-right, Top-left, Bottom-right, Bottom-left or Moldure.
- Quick Config mode – A fast and easy setup option.
- Export & Import settings – Backup and restore configurations effortlessly.

Latest Release – v1.2.1
Important: Before updating, export your settings for backup.

What’s New?
✔ Minor bug fixes.
✔ Added support for ribbon transparency.

Environment Marker is open-source, and contributions are welcome!
GitHub: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/d06a8e36584849c3f0065b6aa2b6603c2e530fa815d735b55891e490f4b871c4/https%3A//github.com/geovanneb/envmarker" rel="nofollow">https://github.com/geovanneb/envmarker</a>

<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/022b119750ef270c05ddb1797a7b26bd9c4bf398970ed83e1878679b17b20493/https%3A//www.youtube.com/watch%3Fv=EQR__eJkLUw" rel="nofollow">https://www.youtube.com/watch?v=EQR__eJkLUw</a>

## Rankings

- #7,325 — Overall
- #2 — environment
- #6 — marker
- #99 — program
- #117 — marvel
- #145 — label

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `alarms`

### Host permissions

- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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- [Env-based FF browser color](https://chrome-stats.com/d/env-based-ff-browser-color)

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Source: [Chrome-Stats](https://chrome-stats.com/d/environment-marker-extension)