Code Injector

Name: Code Injector
Rating: 4.5811 (74 reviews)
Author: Saba

By: Saba

Inject code into websites! (JavaScript, CSS, HTML and Files)

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Features & Capabilities

The Code Injector Chrome extension empowers users to inject custom JavaScript, CSS, HTML, and files directly into any website. Ideal for developers and web designers, it requires a basic understanding of web programming to operate effectively. This add-on enables you to customize website appearance and behavior on the fly, enhancing testing, debugging, and personalization workflows.

For detailed usage, documentation is available on GitHub, providing necessary guidance for smooth operation. Whether tweaking styles or adding scripts, Code Injector is a versatile tool for anyone looking to interact with web pages beyond standard browsing capabilities.

User Growth & Download Statistics

Add-on Developer Tools Programming

By:

Saba

Daily users:

1,613 -3

Rating:

4.58

(74)

Version:

0.3.3 Last updated: 2022-01-16

Version code:

5350461

Creation date:

2017-10-09

Risk:

Permissions:

Size:

2.35MB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 2,484

Other rankings

#283 in Web Development ▼ 1#30 in inject keyword 14 #159 in code keyword 42 #203 in codes keyword 45 ▲ 4

Other platforms

Code Injector (v0.3.2)

3,000 4.67

(15)

Code Injector (v0.3.2)

4,324 4.60

(9)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Saba

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/codeinjector/

Website:

https://github.com/Lor-Saba/Code-Injector

User Reviews

Users broadly praise Code Injector as a fast, reliable tool that can inject both CSS and JavaScript, earning it top marks as one of the best extensions for code injection. However, its effectiveness is limited by site security: restrictive Content Security Policies block functionality on many sites, and iframe injection is not supported. A few users also request domain-based profiles and more stable popup behavior, but the overall sentiment remains highly positive for everyday use.

Pros

Highly effective code injector that supports both CSS and JavaScript injections.
No-nonsense, easy-to-use tool that consistently works.
Widely regarded as one of the best injection extensions available.

Cons

Content Security Policy restrictions prevent operation on sites with strict CSP.
Cannot inject code into iframes.

Recent reviews

by Fi*****, 2026-03-06

by Fi*****, 2026-01-30

by us*****, 2025-08-03

View all user reviews ›

Is Code Injector Safe?

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.

Code 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.
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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 Add-ons Store, 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.

Code Injector has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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