Localhost Warning icon

Localhost Warning

by Ondřej Chlumecký

v2.0 Updated Mar 27, 2025 121KiB
CWS
15
Users
★ 5.00
1 reviews
#40005
of 74.8K
developer
#3433 of 6.5K

Description

This extension helps developers easily recognize when they are working in a local or development environment by displaying a clear warning banner at the top of the page. 🚀 Features: ✅ Detects localhost, 127.0.0.1, .docker, and dev. domains. ✅ Displays a red warning banner with “This is a local or development page!” message. ✅ Prevents accidental modifications or actions in non-production environments. ✅ Works automatically on all web pages without additional setup. Perfect for developers, testers, and teams working with local or staging environments! 🔧 How to use: 1. Install the extension. 2. Open any local or development site (e.g., http://localhost, http://xxxx.docker, https://dev.xxxx). 3. See the warning banner at the top of the page. ⚠️ Note: This extension does not modify site functionality—it only adds a visual indicator to prevent mistakes.
Localhost Warning screenshot 1

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Permissions (2)

Permissions

activeTab Can access the current tab when you click the extension storage Can store data locally in your browser

Details

Version 2.0
Updated Mar 27, 2025
Size 121KiB
First Seen Mar 26, 2026