# 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 (\*/ad.x.com/\*) by creating rules

Canonical page: [https://chrome-stats.com/d/request-interceptor](https://chrome-stats.com/d/request-interceptor)

## Overview

- **ID:** `request-interceptor`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Vinay Kaparthi
- **Category:** web-development
- **Daily users:** 594
- **Weekly downloads:** 13
- **Rating:** 3.92 / 5 (13 ratings)
- **Version:** 1.5.0
- **Last updated:** 2023-10-20
- **First published:** 2019-07-29
- **Size:** 1.88 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/request-interceptor/)

## Description

Request Interceptor is a powerful Chrome extension designed to give you full control over your HTTP and HTTPS requests. Easily create custom rules to block or redirect unwanted requests, such as ads from specific URLs (e.g., */ad.x.com/*).

This extension also lets you throttle responses of static resources and add, modify, or delete request and response headers and query parameters. It's an essential tool for developers and power users aiming to tailor web traffic to their needs, optimize browsing, or test various scenarios without changing server configurations.

## Rankings

- #4,560 — Overall
- #4 — request
- #36 — interest
- #47 — query
- #48 — modify
- #65 — example

## Permissions and access

### Permissions

- `tabs`
- `webRequest`
- `webRequestBlocking`
- `http://*/*`
- `https://*/*`
- `storage`
- `unlimitedStorage`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low 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).

## Review summary

Request Interceptor helps users manage and modify HTTP requests effectively for testing scenarios and URL redirection. However, multiple users report that the interface is not intuitive and lacks clear instructions, causing confusion about saving and enabling the add-on. It also has issues working with localhost sites, unlike similar tools on other browsers. Post-update behavior forces settings tabs to open every browser start. Overall, it performs its core function but could benefit from better UI, documentation, and expanded features.

### Pros

- Effective in managing and modifying HTTP requests for testing and controlled data scenarios.
- Relatively easy to use once understood, helpful for testing feature behavior under different API responses.
- Supports redirecting and replacing parts of URLs with regex, offering flexibility.
- Performs adequately in general use as intended for intercepting requests.

### Cons

- User interface is not very intuitive; saving changes and enabling the add-on are unclear to users.
- Lacks clear documentation or tutorials, leading to confusion about features and usage.
- Issues with localhost or locally hosted web applications not being supported or working properly.
- After updates, the add-on sometimes opens the settings tab every time Firefox launches, annoying users.
- Some desired features like auto-responding or modifying request bodies are missing or limited.

## Similar extensions and apps

- [Request Interceptor](https://chrome-stats.com/d/request_interceptor) — 417 users, 5.00 / 5
- [Network Interceptor](https://chrome-stats.com/d/network-interceptor) — 6 users
- [Header request Injector](https://chrome-stats.com/d/header-request-injector) — 3 users
- [Ads and tracker blocker](https://chrome-stats.com/d/ads-and-tracker-blocker)
- [HTTP Header Plugin](https://chrome-stats.com/d/http-header-plugin) — 7 users
- [Request Control](https://chrome-stats.com/d/requestcontrol) — 720 users, 4.72 / 5
- [Simple Request Interceptor](https://chrome-stats.com/d/simple-request-interceptor)
- [Instant Ad-Close](https://chrome-stats.com/d/instant-ad-close) — 2 users, 5.00 / 5
- [DefendShield Request Interceptor](https://chrome-stats.com/d/defendshield-interceptor)
- [HTTP Headers Customize](https://chrome-stats.com/d/http-headers-customize) — 3 users
- [Headers](https://chrome-stats.com/d/headers) — 536 users, 5.00 / 5
- [Header Ext](https://chrome-stats.com/d/header-ext) — 3 users

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