Focus Blocker

Name: Focus Blocker
Author: SUNWIN

By: SUNWIN

Block distracting sites during focus time. Toggle focus on/off, add the current site to your blocklist, and use a simple timer right from the popup.

This add-on was removed from Firefox Add-ons Store on 2026-05-13

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Features & Capabilities

Focus Blocker keeps you on track by stopping access to distracting websites during focus sessions. Turn on focus mode, add sites to your blocklist, and use the built-in timer to stay disciplined while working or studying.

Once enabled, any blocked site will show a gentle reminder page instead of loading. You can manage your blocklist from the popup — either type in a site’s address or quickly add the one you’re currently visiting. The blocklist is stored locally in your browser and can be edited or cleared at any time.

The built-in timer helps you work in focused sessions. Set a duration that suits you — from just a few minutes to a couple of hours — and Focus Blocker will automatically disable itself when the timer runs out. This way you can stay productive while also giving yourself proper breaks.

Focus Blocker is private and lightweight. It does not require an account, does not track your browsing, and does not send any data anywhere. Everything happens locally, giving you a simple and effective tool to protect your focus.

User Growth & Download Statistics

Add-on

By:

SUNWIN

Daily users:

Version:

1.0.0 Last updated: 2025-09-12

Version code:

6030667

Creation date:

2025-09-09

Risk:

Permissions:

Size:

16.82KB

Email:

kj*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-05-13

Compare stats and ranking:

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:

SUNWIN

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/focus-blocker2/

Email:

kj*****@gmail.com

Is Focus Blocker 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.

Focus Blocker 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.

Focus Blocker may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.