# Check4Change

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

Canonical page: [https://chrome-stats.com/d/check4change](https://chrome-stats.com/d/check4change)

## Overview

- **ID:** `check4change`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ronen Zilberman
- **Category:** alerts-updates,shopping
- **Daily users:** 3,980
- **Weekly downloads:** 55
- **Rating:** 3.54 / 5 (123 ratings)
- **Version:** 2.4
- **Last updated:** 2024-11-26
- **First published:** 2006-07-25
- **Size:** 958 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/check4change/)
- **Website:** [http://check4change.com](http://check4change.com/)

## Description

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.

## Rankings

- #1,370 — Overall
- #36 — Alerts & Updates
- #54 — Shopping
- #15 — exchange
- #27 — change color
- #40 — range

## Permissions and access

### Permissions

- `activeTab`
- `contextMenus`
- `tabs`
- `webNavigation`
- `<all_urls>`
- `notifications`
- `storage`
- `cookies`
- `webRequest`
- `webRequestBlocking`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

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

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.

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- [PageWatch & Refresh](https://chrome-stats.com/d/pagewatch-refresh) — 1 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/check4change)