Update Scanner

Name: Update Scanner
Rating: 3.9581 (191 reviews)
Author: sneakypete81

Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.

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Update Scanner is a powerful Chrome extension designed to monitor your favorite web pages for any changes. Perfect for websites that lack Atom or RSS feeds, it lets you specify how frequently each page should be scanned. The extension automatically highlights changes on the pages, ensuring you never miss an update. Users can also configure it to ignore minor modifications and benefit from full international support, making it adaptable to various languages and regions. Stay informed effortlessly with Update Scanner's intelligent page monitoring features.

Add-on Productivity Utilities Developer Tools

By:

Daily users:

Rating:

Version:

4.4.0 Last updated: 2020-02-07

Version code:

3207976

Creation date:

2006-09-11

Risk:

Permissions:

<all_urls>
alarms
notifications
storage
tabs
unlimitedStorage
*://twitter.com/*
*://www.facebook.com/*

Size:

197.54KB

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-13

Ranking

# 1,162 ▼ 11

Other rankings

#38 in Bookmarks

#52 in Feeds, News & Blogging ▲ 1

#1 in update keyword 10

#12 in scan keyword 18

#13 in winner keyword 3

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User reviews

Update Scanner is praised for its usefulness, simplicity, and reliability in tracking webpage changes, making it indispensable for many users. However, its development has been abandoned for years, resulting in compatibility problems such as blank pages and missing updates on many websites. Users also desire shorter scan intervals and more granular monitoring options. Despite these issues, it remains a valued tool integrated with other extensions and continues to be a main reason some users prefer Firefox.

Pros

Highly useful for monitoring webpage updates, especially for contests or important notices
Simple, effective, and free add-on
Reliable and has been used daily by some users for years
Integrates well with other Firefox add-ons like Notification Sound
Helps users stay informed without manual page checks

Cons

Development and maintenance have been abandoned for over 5 years leading to compatibility issues
Fails to display changes properly on many sites, often showing blank pages
Lacks option to set refresh intervals shorter than 5 minutes
Occasionally deletes alerts without cause
No support for partial page monitoring, problematic with pages having frequently changing elements like ads

Recent reviews

This would be 5 stars, but reducing the rating as time marches on. Development was abandoned 5 years ago. Over time more sites break and show blank pages. As Firefox moves away from open source, it's what you should expect.

by TF*****, 2025-06-25

estensione meravigliosa e utilissima,speriamo continui a funzionare. Indispensabile per monitarare pagine in attesa di aggiornamenti,tipo concorsi o avvisi

by gu*****, 2025-05-22

Because of the negative reviews I see, I want to confirm that this addon is still working as intended (actually with FF 128.10.0esr). I don't experience the problems others are referring to. So, this remains one of my favourite addons, and the main reason for staying with FF. Just wished a Chromium version would exist

by Da*****, 2025-05-13

View all user reviews ›

Extension safety

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.

Update Scanner requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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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 Browser Add-ons, 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.

Update Scanner has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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