# Reject Service Worker

> Reject the service worker.

Canonical page: [https://chrome-stats.com/d/reject-service-worker](https://chrome-stats.com/d/reject-service-worker)

## Overview

- **ID:** `reject-service-worker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** toshi
- **Category:** privacy-security
- **Daily users:** 87
- **Weekly downloads:** 2
- **Rating:** 4.75 / 5 (4 ratings)
- **Version:** 0.9.0
- **Last updated:** 2024-03-24
- **First published:** 2020-04-03
- **Size:** 33 KB
- **Data as of:** 2026-09-15
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/reject-service-worker/)
- **Website:** [https://github.com/k08045kk/RejectServiceWorker](https://github.com/k08045kk/RejectServiceWorker)

## Description

Reject Service Worker is a Chrome extension designed to enhance your control over service workers. It prevents automatic registration of service workers on websites, ensuring that unwanted background scripts are blocked for improved privacy and performance. If a service worker was registered before installing this extension, it will be unregistered upon your first visit after installation.

You can customize which sites are allowed to register service workers by adding their domain names to a whitelist. This flexibility lets you maintain essential service worker functionality on trusted sites while blocking others. Note that in Firefox, specific settings must be enabled for the extension to function correctly. Reject Service Worker offers a straightforward way to manage service worker registration and enhance browsing control.

## Rankings

- #12,466 — Overall
- #8 — service
- #86 — work
- #106 — register

## Permissions and access

### Permissions

- `activeTab`
- `storage`

### Content script matches

- `*`

## Safety

- **Risk impact:** Moderate 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/reject-service-worker)