Description from extension meta
Inject custom JS into the current domain.
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Description from store
Custom JS Injector allows you to run your own JavaScript code on any website. You can write, inject, and store custom scripts per domain β all from a clean, intuitive popup interface.
β¨ **Features**:
- π» Inject JavaScript into any website via popup UI
- πΎ Automatically saves your script per domain
- π Auto-inject on page reload β no need to click again
- π Scripts are stored locally (no remote sync or upload)
- π§ No external dependencies, no bloat β just pure custom JS!
π **Use Cases**:
- Debug page behavior or experiment with ideas
- Clean up UI or hide elements
- Extract data from web apps or dashboards
- Apply personal UI/UX fixes on internal tools
π **Important Notice β Website Restrictions**:
This extension **does not work** on some websites that actively block JavaScript injection through browser-level security mechanisms like **Content Security Policy (CSP)**.
These websites include, but are not limited to:
- `google.com`
- `facebook.com`
- `twitter.com`
- `chrome.google.com`
Due to these restrictions, the extensionβs inject feature will **not function** on those sites. This is expected behavior, and not a bug or issue with the extension.
To test or use this extension, please try it on other websites that do not have strict CSP rules β such as:
- `example.com`
- `wikipedia.org`
- internal tools or custom dashboards
π **Privacy**:
This extension only uses local storage. **No data is shared, synced, or uploaded remotely.**
Statistics
Installs
20
history
Category
Rating
5.0 (2 votes)
Last update / version
2025-04-24 / 1.0
Listing languages
en-US