# CoinBlock

> With the rising popularity of coinminers in js form, this extension attempts to block those hosted on coin-hive, and cryptoloot. A multiple entry block list is planned.

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

## Overview

- **ID:** `coinblock`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Bechsen
- **Category:** privacy-security,appearance,other
- **Daily users:** 616
- **Weekly downloads:** 1
- **Rating:** 3.70 / 5 (10 ratings)
- **Version:** 2.1.4resigned1
- **Last updated:** 2024-04-25
- **First published:** 2017-09-20
- **Size:** 1.12 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/coinblock/)

## Description

CoinBlock is a lightweight Chrome extension designed to block JavaScript coinminers hosted on popular mining services such as Coin-hive and Cryptoloot. By scanning for <script> tags originating from a maintained block list, it prevents unwanted cryptocurrency mining activities that can slow down your browser and compromise your device’s performance.

The extension aims to offer a simple yet effective solution to the rising issue of coinminers running silently in the background on websites. CoinBlock's block list is expected to expand, offering broader protection over time. Users are encouraged to contribute by suggesting new miner sources via email, helping keep the extension up-to-date and effective.

## Rankings

- #4,388 — Overall
- #47 — unblock
- #48 — writer's block
- #71 — block
- #71 — blockchain
- #79 — block ads

## Permissions and access

### Permissions

- `storage`
- `notifications`
- `webRequest`
- `webRequestBlocking`
- `<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).

## Review summary

### Pros

- Good stuff
- Extension can perform well
- Useful

### Cons

- Doesn't work on certain websites
- May cause CPU to run at 100%

## Similar extensions and apps

- [minerBlock](https://chrome-stats.com/d/minerblock-origin) — 10,427 users, 4.51 / 5
- [Coin Mining Blocker](https://chrome-stats.com/d/coin-mining-blocker) — 152 users, 3.75 / 5
- [MineBlock](https://chrome-stats.com/d/themineblock) — 69 users, 3.20 / 5
- [NoMiner - Block Coin Miners](https://chrome-stats.com/d/nominer-block-coin-miners) — 3,728 users, 3.71 / 5
- [No Coin](https://chrome-stats.com/d/no-coin) — 22,416 users, 4.29 / 5
- [CryptoMining Blocker](https://chrome-stats.com/d/cryptomining-blocker) — 1,041 users, 4.21 / 5
- [No-Miner](https://chrome-stats.com/d/no-miner) — 31 users, 4.50 / 5
- [CoinEater](https://chrome-stats.com/d/coineater) — 118 users, 5.00 / 5
- [JavaScript Blocker](https://chrome-stats.com/d/javascript-blocker) — 52 users
- [AI Blocker](https://chrome-stats.com/d/ai-blocker) — 8,770 users, 3.53 / 5
- [Block Block](https://chrome-stats.com/d/block-block) — 1 users
- [SearchBlocklist](https://chrome-stats.com/d/searchblocklist) — 3 users, 5.00 / 5

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