Resource Override Firefox

Resource Override

An extension to help you gain full control of any website by redirecting traffic, replacing, editing, or inserting new content.

Features & Capabilities

Resource Override is a powerful Chrome extension designed to give you complete control over any website you visit. With this tool, you can redirect network requests on the fly, replace or inject new content such as JavaScript and CSS files, and edit text documents directly within the extension. This makes debugging and customizing production websites easier than ever.

Newly added features include the ability to modify request and response headers with handy presets like enabling CORS, allowing iframes, and more. Whether you're looking to replace minified code with a readable version or insert custom scripts, Resource Override simplifies web development and testing by putting all these capabilities at your fingertips.

User Growth & Download Statistics

Manifest V2 Add-on
By:
Kyle Paulsen
Daily users:
1,975 -58
Rating:
4.60
(20)
Version:
1.3.2 Last updated: 2021-07-14
Version code:
5265509
Creation date:
2020-02-04
Risk:
High risk impact Low risk likelihood
Permissions:
Content scripts matches:
  • *
Size:
441.95KB
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-18
Compare stats and ranking:

Other platforms

Chrome
Resource Override (v1.3.1)
40,000 4.62 (215)

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:
Kyle Paulsen
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/resourceoverride/
Website:
https://github.com/kylepaulsen/ResourceOverride/issues

User Reviews

Resource Override is praised for its powerful yet simple functionality, allowing users to inject custom JS and CSS into websites easily. Its "Inject File" feature is particularly appreciated. However, a common drawback noted is the absence of a dark mode, resulting in a bright, white interface that can be uncomfortable for some users.
Pros
  • Allows injecting custom JavaScript and CSS resources into websites.
  • Easy to use with powerful features like "Inject File".
  • Helps enhance website experience by enabling custom scripts/styles.
Cons
  • Lacks a dark mode, defaulting to a bright white interface which can be harsh on eyes.
Recent reviews
Thank you.
by Le*****, 2026-05-14

Perfect extension that works, that is 100x better than firefox's own override feature.
by Ju*****, 2025-09-30

by 天灭*****, 2025-04-07
View all user reviews ›

Is Resource Override 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.

Resource Override 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.

Resource Override 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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Best Resource Override Alternatives

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