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TamperJS — Inject Javascript Easily

codehorizon.io
ExtensionDeveloper Tools38 users
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Overview

Inject, tweak, and customize JavaScript on any website with a powerful Monaco-powered editor.

TamperJS is a lightweight and efficient browser extension designed for developers who need a quick and seamless way to inject custom JavaScript into any website. Built with the Monaco Editor—the same technology behind VS Code—it provides a clean and intuitive environment for writing, testing, and executing scripts effortlessly. Whether you're a developer optimizing workflows, a researcher testing scripts, or a power user customizing web pages, TamperJS provides an easy-to-use interface with domain-based script management, instant execution, and a seamless dark mode for a comfortable coding experience. Our goal is to keep things simple yet effective, helping you customize the web in a way that suits your needs.

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Details

  • Version
    1.0.2
  • Updated
    April 1, 2025
  • Size
    4.75MiB
  • Languages
    English (United States)
  • Developer
    Federico Ribigini
    Via Giacomo Matteotti 4 perugia, PG 06053 IT
    Website
    Email
    dev@codehorizon.io
    Phone
    +39 351 736 3939
  • Trader
    This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.

Privacy

The developer has disclosed that it will not collect or use your data.

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

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