TamperJS — Inject Javascript Easily
Inject, tweak, and customize JavaScript on any website with a powerful Monaco-powered editor.
As of May 2026, TamperJS — Inject Javascript Easily has 96 users in the Developer Tools category.
Usersdown 5.9 percent−5.9%
96
96
Ratingno change0%
—
— reviews
Reviewsno change0%
—
Version
1.0.2
Manifest V3
History
3 snapshotsTracking since Apr 1, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 1, 2026 | 102 | — | — | 1.0.2 |
| May 2, 2026 | 104 | — | — | 1.0.2 |
| May 31, 2026 | 112 | — | — | 1.0.2 |
| Now | 96 | — | — | 1.0.2 |
Permissions & access
- Permissions
- storagescriptingactiveTabwebNavigation
- Host access
- None declared
Screenshots
About
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.
Technical
- Version
- 1.0.2
- Manifest
- V3
- Size
- 4.75MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- bdanhcciaojllkmcebhoadjkndbhhimd
- Developer ID
- u3ca000e1275220368838fc94e16de15a
- Developer Email
- [email protected]
- Created
- Mar 19, 2025
- Last Updated (Store)
- Apr 1, 2025
- Last Scraped
- May 31, 2026
- Website
- codehorizon.io
- Support URL
- —
- Privacy Policy
- —
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Data sourced from the Chrome Web Store · last verified May 31, 2026.