URLColors

Name: URLColors
Rating: 4.666666666666667 (39 reviews)
Author: url-colors

A chrome extension that adds a colored border around websites that match user inputted preferences.

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URLColors is a Chrome extension designed to help developers visually distinguish between multiple web environments by adding custom colored borders around browser tabs. It allows users to specify keywords to match URLs, setting border color, width, opacity, and even blinking effects with adjustable intervals. The extension supports wildcard characters (*), enhancing flexibility for URL matching.

Ideal for developers working across development, testing, and production environments, URLColors helps prevent accidental actions on live sites by clearly highlighting them. Additionally, it features a demo or snooze mode, allowing temporary disabling during presentations with automatic reactivation afterward. The project welcomes contributions via its GitHub repository and was co-developed with contributions from @dzoba.

Extension

By:

Users:

Rating:

Version:

2.2 Last updated: 2024-03-05

Creation date:

2018-10-12

Risk:

Permissions:

storage
tabs
scripting

Host permissions:

https://*/*

Size:

18.07KB

Email:

ju*****@gmail.com

URLs:

Full description:

Source:

Chrome Web Store

Data ingested on:

2025-07-15

Ranking

# 10,299 ▲ 32

Other rankings

#2857 in Developer Tools ▼ 3

#28 in change color keyword 15 ▲ 9

#44 in color keyword 71 ▲ 10

#55 in environment keyword 15 ▲ 5

#85 in flag keyword 27 ▲ 11

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User reviews

URLColors is a simple, reliable Chrome extension valued by developers for effectively differentiating between environments to prevent costly mistakes. Its ease of use and clear visual cues are praised. However, multiple users desire regex or wildcard support to manage subdomains more easily and find configuration options unclear. Some wish for tab coloration, and a few have encountered functionality issues or lack of clear instructions. Overall, it is a well-liked tool for improving workflow safety across multiple environments.

Pros

Simple and effective solution for coloring browser tabs.
Helps distinguish between multiple environments (e.g., test, production) to prevent errors.
Easy to configure and unobtrusive in use.
Reliable and works well across multiple browsers.
Highly appreciated by developers for avoiding mistakes on live sites.

Cons

Lacks regex or wildcard matching support, making it hard to apply colors to subdomains or multiple URLs at once.
Some users find the configuration options unclear, specifically regarding border width and opacity units.
Does not color the tabs themselves, only the borders, which can be less noticeable when working with many tabs.
Some users reported that the extension stopped working or was difficult to set up without clear instructions.

Recent reviews

Simple mais efficace !

uı*****, 2024-12-23

Awasome!

To*****, 2024-10-04

I am loving this extension. :) however I have a question: how can I set the border width without specifying the flash and timer properties?

Ra*****, 2024-09-18

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

URLColors requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension.

URLColors has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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