JS Injector Code

Name: JS Injector Code
Author: ValKos

The `activeTab` permission is required to inject user scripts and CSS into the currently active tab when the user explicitly triggers an action (clicking "Run" in the popup, side panel, or context menu). This permission is only act

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

1.0.0

Last updated: 2026-07-15

Features & Capabilities

EN: JS Injector is a universal cross-browser extension that allows users to inject custom JavaScript and CSS into any website. It provides a powerful code editor with syntax highlighting, autocomplete, and a library of code snippets for common automation tasks. Users can create scripts that automatically run on specific websites based on URL patterns, customize page appearance with CSS injection, and use the Greasemonkey/Tampermonkey-compatible API for persistent storage and cross-origin requests. The extension includes a side panel editor for live script testing, context menu integration, and full import/export functionality for script portability.

RU: JS Injector — это универсальное кросс-браузерное расширение, которое позволяет пользователям внедрять пользовательские JavaScript и CSS скрипты на любые веб-сайты. Расширение предоставляет мощный редактор кода с подсветкой синтаксиса, автодополнением и библиотекой сниппетов для типовых задач автоматизации. Пользователи могут создавать скрипты, которые автоматически запускаются на определённых сайтах на основе URL-паттернов, настраивать внешний вид страниц с помощью CSS-инъекций и использовать совместимый с Greasemonkey/Tampermonkey API для持久ного хранения данных и кросс-доменных запросов. Расширение включает редактор в боковой панели для тестирования скриптов в реальном времени, интеграцию с контекстным меню и полную функциональность импорта/экспорта для переносимости скриптов.

User Growth & Download Statistics

Add-on

By:

ValKos

Daily users:

Version:

1.0.0 Last updated: 2026-07-15

Version code:

6351716

Creation date:

2026-07-12

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

370.31KB

Email:

de*****@valkos.by

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 141,433 ▲ 1,607

Other rankings

#133 in inject keyword 13

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

ValKos

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/js-injector-code/

Email:

de*****@valkos.by

Website:

https://valkos.by/widgets/js-injector/security.html

Is JS Injector Code Safe?

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.

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

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. 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 Firefox add-on.

JS Injector Code is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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