# Block Unreachable Scripts

> Prevent unreachable servers from stalling websites by disabling their scripts if they previously could not load.

Canonical page: [https://chrome-stats.com/d/block-unreachable-scripts](https://chrome-stats.com/d/block-unreachable-scripts)

## Overview

- **ID:** `block-unreachable-scripts`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** em\_te
- **Category:** other
- **Daily users:** 2
- **Rating:** 3.25 / 5 (8 ratings)
- **Version:** 0.5resigned1
- **Last updated:** 2024-04-25
- **First published:** 2017-08-03
- **Size:** 16 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/block-unreachable-scripts/)
- **Website:** [http://forums.mozillazine.org/viewtopic.php?f=48&t=3033669](http://forums.mozillazine.org/viewtopic.php?f=48&t=3033669)

## Description

Block Unreachable Scripts is a Firefox add-on that prevents websites from stalling due to unreachable servers by disabling their scripts. It monitors failed JavaScript requests and skips over them when those servers are accessed again. Failed requests can be viewed in the toolbar button.

## Rankings

- #57,807 — Overall
- #166 — script

## Permissions and access

### Permissions

- `<all_urls>`
- `webRequest`
- `webRequestBlocking`
- `storage`
- `tabs`

### Content script matches

- `<all_urls>`

## 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/block-unreachable-scripts)