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JS Mage > Inject Custom JavaScript Into Any Website, iFrames, Import/Export icon

JS Mage > Inject Custom JavaScript Into Any Website, iFrames, Import/Export

Advanced custom JavaScript injector with native CSP bypass.

Users7Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
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777772026年7月13日2026年7月16日2026年7月18日Latest: 7
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Technical snapshot

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Version1.0
ManifestV3
Size19.15KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

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JS Mage is a utility for injecting custom JavaScript directly into the MAIN execution world of web pages.

It natively bypasses standard extension isolation and Content Security Policy (CSP) restrictions that normally block inline script execution.

This allows your injected code to interact directly with the host page's window object, native variables, and frameworks.

The extension uses a draggable, resizable code editor injected into the active tab via a Shadow DOM, preventing the host page's CSS from breaking the editor's UI.

Core Features

● Execution Scopes: Maintain independent scripts for specific hostnames (Local) or a single script applied across all websites (Global).

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Reviews with text0Synced review bodies
Total ratings / reviews0Chrome Web Store public rating/review count

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