# URL Throttler

> This simple and straightforward add-on allows you to delay network responses from a custom list of URLs for a specified amount of time.

Canonical page: [https://chrome-stats.com/d/url-throttler](https://chrome-stats.com/d/url-throttler)

## Overview

- **ID:** `url-throttler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Joseph Coyle
- **Category:** web-development
- **Daily users:** 78
- **Weekly downloads:** 4
- **Rating:** 3.33 / 5 (3 ratings)
- **Version:** 1.2
- **Last updated:** 2024-07-24
- **First published:** 2024-03-17
- **Size:** 79 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/url-throttler/)
- **Website:** [https://github.com/jcoyle37/URL-Throttler-2024](https://github.com/jcoyle37/URL-Throttler-2024)

## Description

**URL Throttler** is a simple yet powerful Chrome extension designed for developers and testers to simulate network delays on specific URLs. By allowing customized delays in network responses, this tool helps in testing race conditions and asynchronous behaviors in web applications. The extension supports importing and exporting configurations for various testing scenarios, making it flexible and user-friendly.

Open source and actively maintained, URL Throttler empowers users to control network timing and improve reliability by mimicking real-world latency situations. Its straightforward interface ensures ease of use while its customization options suit complex testing needs.

## Rankings

- #13,213 — Overall
- #94 — response
- #190 — contribute

## Permissions and access

### Permissions

- `storage`
- `webRequest`
- `webRequestBlocking`

### Host permissions

- `<all_urls>`

### Content script matches

- `*`

## Safety

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

### Analysis details

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

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