# Download Blocker

> Disable downloading files to disk.

Canonical page: [https://chrome-stats.com/d/download-blocker](https://chrome-stats.com/d/download-blocker)

## Overview

- **ID:** `download-blocker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** ClearCode Inc.
- **Category:** privacy-security
- **Daily users:** 576
- **Weekly downloads:** 10
- **Rating:** 5.00 / 5 (3 ratings)
- **Version:** 1.4
- **Last updated:** 2019-12-02
- **First published:** 2018-09-18
- **Size:** 9.50 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/download-blocker/)
- **Website:** [https://gitlab.com/clear-code/download-blocker](https://gitlab.com/clear-code/download-blocker)

## Description

Download Blocker is a Chrome extension designed to enhance security in specific workflow environments like kiosk terminals. It blocks downloading of all files except for certain safe types such as text/plain, text/html, application/pdf, and application/postscript. This targeted blocking helps prevent unauthorized or potentially harmful file downloads while allowing access to essential documents and webpages.

Ideal for use in public or shared computers, Download Blocker ensures a secure browsing experience by restricting downloads to only trusted file formats. Its focused control mechanism supports environments where maintaining system integrity and preventing data leakage are critical.

## Rankings

- #4,582 — Overall
- #81 — environment
- #83 — website blocker
- #84 — writer's block
- #91 — ad blocker
- #109 — blockchain

## Permissions and access

### Permissions

- `webRequest`
- `webRequestBlocking`
- `<all_urls>`

## 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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- [Download Canceler](https://chrome-stats.com/d/download-canceler) — 1 users
- [Download Plenty](https://chrome-stats.com/d/download-plenty) — 32 users, 4.50 / 5
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- [CanvasBlocker](https://chrome-stats.com/d/canvasblocker) — 37,832 users, 4.58 / 5

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