# Dev Env Marker

> Adds prefix to tabs based on regular expressions.

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

## Overview

- **ID:** `dev-env-marker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** WLW
- **Category:** web-development,tabs
- **Version:** 1.1.2
- **Last updated:** 2023-04-05
- **First published:** 2023-03-29
- **Size:** 31 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dev-env-marker/)

## Description

Dev Env Marker is a Firefox add-on that allows you to easily add prefixes to tabs based on regular expressions. It helps you differentiate tabs and quickly identify which tabs are related to your development environment.

## Rankings

- #141,020 — Overall
- #151 — marker

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- 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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- [Tab Favicon Labeler](https://chrome-stats.com/d/tab-favicon-labeler) — 2 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/dev-env-marker)