Check4Change

Name: Check4Change
Rating: 3.5328 (122 reviews)
Author: Ronen Zilberman

Check4Change (aka C4C) is a simple extension that allows you to select a part of a web-page, and get notified when it changes.

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Features & Capabilities

Check4Change (C4C) is a lightweight browser extension designed to effortlessly monitor webpage content changes. Simply select the text area you want to track, choose how often to check for updates, and let C4C handle the rest. When a change is detected, you'll get notified via tab icon animations, pop-up alerts, flashing tabs, sound notifications, or even email alerts. This saves you from constantly refreshing pages manually, perfect for tracking price changes, news updates, or any dynamic content.

Currently, Check4Change works on open tabs without remembering jobs between browser restarts or monitoring closed tabs, but upcoming versions will add these features. Its simple setup and variety of notifications make it an essential tool for users needing timely webpage change alerts.

User Growth & Download Statistics

Add-on Communication

By:

Daily users:

Rating:

Version:

2.4 Last updated: 2024-11-26

Version code:

5850385

Creation date:

2006-07-25

Risk:

Permissions:

Size:

958.16KB

Email:

su*****@check4change.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-15

Compare stats and ranking:

Ranking

# 1,308 ▲ 5

Other rankings

#31 in Alerts & Updates

#51 in Shopping ▲ 2

#13 in exchange keyword 11 ▼ 1

#29 in change color keyword 18

#37 in range keyword 13

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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:

Ronen Zilberman

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/check4change/

Email:

su*****@check4change.com

Website:

http://check4change.com

User Reviews

Check4Change is appreciated for its basic functionality to monitor webpage changes and being free in 2023. Users successfully use it for tracking tickets and sales updates. However, multiple users report false positives and inaccurate change detections, a poor user interface, and limited free features. Additionally, unexpected sounds and tab openings during auto-update have been criticized. Overall, it fulfills its purpose but has noteworthy reliability and usability issues.

Pros

Effectively monitors changes on web pages as intended.
Free to use and works well in 2023 per some users.
Helpful for tracking specific content changes such as ticket listings or sales figures.
Simple and straightforward to use out of the box.

Cons

Produces false positives and reports changes when there are none.
The user interface is poor and outdated.
Paid interface limits features in the free version.
Plays unexpected sounds and opens tabs upon auto-updating, causing user discomfort.

Recent reviews

I've used this add-on for many, many years. Great for checking stock on shopping deals, waiting for new forum posts, monitoring live market data, or alerting me to election-night data updates. I'm surprised how often I find it useful, tbh. And It's been consistently reliable for years and it's always worked well for me.

by Fi*****, 2026-06-11

by ch*****, 2025-06-26

by 全民*****, 2025-03-23

View all user reviews ›

Is Check4Change 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.

Check4Change 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.

Check4Change 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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