LeechBlock NG

Name: LeechBlock NG
Rating: 4.8282 (1996 reviews)
Author: James Anderson

LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.

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Features & Capabilities

LeechBlock NG is a free and simple productivity Chrome extension designed to help you stay focused by blocking distracting websites during specified times. You can define up to 30 sets of sites to block, customize blocking schedules, set time limits, and even enable a lockdown mode to prevent access immediately.

Key features include password protection to avoid impulsive disabling, wildcard site blocking, keyword-based blocking or allowances, and options for delayed access. Whether you want to block social media, video streaming, or other distracting sites during work hours, LeechBlock NG offers flexible, customizable controls to enhance your productivity without hassle.

For detailed documentation, examples, and support, visit the official LeechBlock NG website.

User Growth & Download Statistics

Add-on

By:

James Anderson

Daily users:

111,701 -633

Rating:

4.83

(1,996) 6 new ratings

Version:

1.7.2 Last updated: 2026-01-04

Version code:

6113083

Creation date:

2017-10-22

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>
*

Size:

435.05KB

Email:

le*****@proginosko.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 210 ▼ 1

Other rankings

#5 in Other extensions

#1 in ai tech keyword 28

#1 in waste keyword 3

#2 in writer's block keyword 12

#3 in example keyword 34

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Other platforms

LeechBlock NG (v1.7.2)

100,000 4.89

(1,439)

LeechBlock NG (v1.7.2)

28,656 4.80

(130)

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

James Anderson

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/leechblock-ng/

Email:

le*****@proginosko.com

Website:

https://www.proginosko.com/leechblock/support/

Permission Change History

2025-04-08: Version 1.6.8.2 → 1.6.9

Remove Permissions: downloads history

Add Optional permissions: history

2023-12-28: Version 1.6.1 → 1.6.2

Add Permissions: history

2023-10-31: Version 1.5.8 → 1.6

Add Host permissions: <all_urls>

Add Permissions: alarms

Remove Optional permissions: <all_urls>

User Reviews

Users consistently praise LeechBlock NG for its reliable blocking of distracting sites, customization options, and life-changing impact on reducing doomscrolling and online addictions. Reviewers highlight its effectiveness, balance of simplicity with power, and features that prevent bypass. The tone is largely positive and emphasizes time saved and healthier browsing habits, with only rare mentions of minor inconveniences.

Pros

Effectively blocks distracting websites and helps curb doomscrolling and internet addiction.
Highly customizable with many options to tailor blocking.
Works as intended and remains lightweight with minimal bloat.
Described as life-changing and life-saving for breaking addictive browsing habits.
Tab-closure feature stops blocked pages from loading, reducing temptation.

Cons

Recent reviews

by Fi*****, 2026-06-19

amazing productivity extension that can block sites and also can let you set a specific timer before it lets you access a site

by ra*****, 2026-06-18

by Fi*****, 2026-06-18

View all user reviews ›

Is LeechBlock NG Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

LeechBlock NG requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

LeechBlock NG has earned a good reputation and can be trusted.

Risk likelihood analysis details

Low This extension was updated more than 6 months ago. Older versions are more likely to be stable and safe.
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