JS Injector

Name: JS Injector
Rating: 3 (4 reviews)
Author: Joey

Automate testing and auto-populate forms by injecting javascript code into the page. If [Run in isolation] is checked, the injected script will not contaminate the original code.

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JS Injector Chrome Extension

JS Injector enables automation of web testing and form filling by injecting custom JavaScript directly into web pages. You can add popular libraries like jQuery, specify target pages using URL matching including fuzzy patterns, and choose to run scripts in isolation to avoid altering original page code or allow interaction when needed.

Its core features include seamless integration of existing JS libraries, precise targeting of web pages for script injection, and flexible isolation modes to protect or interact with native page scripts. This extension is ideal for developers aiming to streamline their testing workflows and auto-populate forms efficiently without modifying original site code.

Add-on Developer Tools Productivity Programming

By:

Joey

Daily users:

180 -3

Rating:

3.00

(4)

Version:

0.0.2 Last updated: 2021-09-24

Version code:

5300196

Creation date:

2021-09-09

Risk:

Permissions:

<all_urls>
tabs
storage
contextMenus

Size:

1.89MB

Email:

zh*****@126.com

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-14

Ranking

# 7,689 ▼ 58

Other rankings

#2 in inject keyword 10

#27 in jquery keyword 14

#74 in javascript keyword 43

#163 in exist keyword 21 ▼ 4

#165 in script keyword 21 ▼ 2

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Other platforms

JS Injector (v0.0.2)

41 5.00

(3)

User reviews

by 全民*****, 2025-03-27

by 远离*****, 2025-02-17

没有效果

by 独立*****, 2023-04-09

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

JS Injector requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
Critical ****** ****** ** ******* ***** ***** *** ** **** ** ***** **** ******** ****** *** ******** ********** * ******* ********
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

JS Injector is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** *** **** *******
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****

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