Item logo image for JS Injector

JS Injector

valkos.by
Item media 3 (screenshot) for JS Injector
Item media 1 (screenshot) for JS Injector
Item media 2 (screenshot) for JS Injector
Item media 3 (screenshot) for JS Injector
Item media 1 (screenshot) for JS Injector
Item media 1 (screenshot) for JS Injector
Item media 2 (screenshot) for JS Injector
Item media 3 (screenshot) for JS Injector

Overview

Inject custom JavaScript into any website. Manage userscripts with URL matching, context menus, and import/export.

**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.

Details

  • Version
    1.0.0
  • Updated
    July 15, 2026
  • Size
    359KiB
  • Languages
    2 languages
  • Developer
    Website
    Email
    dev@valkos.by
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

You might also like…

InjectJS – JavaScript Injector & Custom Script Manager

4.6

Inject custom JavaScript (JS) into any webpage, automate tasks, and manage scripts. Ideal for developers and power users.

Inject Code

4.6

Inject your own Javascript, React/JSX, CSS / LESS / SCSS/ SASS into any webpage

Inject JS - Run JavaScript code

4.9

Inject js on any website Run JavaScript code

Run Javascript

4.1

Run custom Javascript, each time you visit a website

Google apps