# jSin

> A simple, free-and-open-source JavaScript injector with a built-in text editor and URL glob matching.

Canonical page: [https://chrome-stats.com/d/jsin-extension](https://chrome-stats.com/d/jsin-extension)

## Overview

- **ID:** `jsin-extension`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jack Bennett
- **Category:** web-development
- **Daily users:** 2
- **Version:** 1.0.1
- **Last updated:** 2023-11-28
- **First published:** 2023-11-24
- **Size:** 80 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/jsin-extension/)
- **Website:** [https://github.com/kosude/jsin-extension/issues](https://github.com/kosude/jsin-extension/issues)

## Rankings

- #65,170 — Overall

## Permissions and access

### Permissions

- `activeTab`
- `storage`
- `tabs`
- `http://*/`
- `https://*/`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/jsin-extension)