Request Interceptor

Request Interceptor

Intercept HTTP and HTTPS Requests. Add custom rules to modify request/response headers, block/redirect requests, modify query params. Example Usage: This extension can be used to block all ads having url (*/*) by creating rules

Request Interceptor promo image
What is Request Interceptor?

'Request Interceptor' is a powerful Firefox add-on that gives users control over their browsing experience by intercepting HTTP and HTTPS web requests. It not only allows users to redirect or block unnecessary requests but also to throttle the responses of static resources. Further, it offers customization options to add, modify, or delete request/response headers, along with the possibility to manipulate query parameters. An excellent tool for a customized web interaction.

Users: 775 ▲ 16
Rating: 3.79 (14)
Version: 1.5.0 (Last updated: 2023-10-20)
Creation date: 2019-07-29
Weekly download count: 67
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
  • tabs
  • webRequest
  • webRequestBlocking
  • http://*/*
  • https://*/*
  • storage
  • unlimitedStorage
Size: 1.98M
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Firefox Browser Add-ons.
Chrome-Stats extension

Use this extension to

  1. redirect/block requests
  2. throttle response of static resources
  3. add/modify/delete request/response headers
  4. add/modify/delete query parameters
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Effective for managing requests, creating controlled data scenarios
  • Useful for testing feature flag behaviour when key APIs fail in a web application
  • Option to partially replace URLs
  • Lack of clear instructions on plugin use and enablement
  • Opens settings tab each time Firefox is opened
  • Has issues with auto responding and modifying request body
  • Does not work on locally hosted webapps
  • Throttling on localhost doesn't work
Most mentioned
  • Lack of clear instructions/tutorials
  • Interface could be more user-friendly
  • Issues with locally hosted webapps
View all user reviews
Risk impact

Request Interceptor is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Request Interceptor if you trust the publisher.

Risk likelihood

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

Upgrade to see risk analysis details