It is no longer news that Google Reader can subscribe to any page updates. In short, Google Reader already supports subscribing to updates on any page. Even those websites that do not provide RSS output, Google Reader can detect changes in page content and generate an RSS Feed for users. In fact, in addition to Google Reader having this function, I also found several other websites and tools that have similar services, and I will share them with you now.
1. ChangeDetection
ChangeDetection.com is a website that provides website update monitoring services. Users only need to provide the URL of the website to be monitored and their own email (used to receive update emails) to monitor updates to any website in real time. This website promises to monitor most forms of content updates on the website, but does not include changes at the HTML level. The monitoring period is one day.
2. Website-Watcher
The software Website-Watcher can monitor the update status of the website in real time, and can monitor updates based on date or content changes.
Through Website-Watcher, we can import the websites in our favorites into the software in batches, and it supports favorites in IE, Firefox, Opera and other browsers. Website-Watcher not only supports manual checking for updates, but also supports "automatic monitoring". By customizing the monitoring time interval, you can get website updates in real time; moreover, automatic monitoring also provides three prompt methods: playing sound, opening the page, Send email. Very convenient.
3. TheBestLinks
The principle of TheBestLinks.com is similar to the ChangeDetection mentioned above. It also monitors website updates in real time and sends reminders to users in the form of emails. However, in addition to the above functions, TheBestLinks also provides a unique link for each update, such as the link in an update of my English blog GetBrowser on January 28. Through this link, users can view updated content from the monitored website (highlighted by TheBestLinks).
In addition, we also introduce to you 3 Firefox extensions (Check4Change, Update Scanner and Site Delta) for monitoring website updates.
Check4Change
Check4Change, or C4C for short, actually means Change for Change. After installing this extension, select the text that needs to be monitored for updates, and then select the time interval in Check4Change. For example, if you want to know the price of a certain product on Taobao at all times, after using Check4Change monitoring, it will continuously refresh the web page within the selected time interval, and notify you as soon as there is any change.
Update Scanner
This is also a highly used Firefox extension for monitoring website page updates, especially suitable for websites that do not provide Atom or RSS (including blogs, of course).
After installation, you only need to open Update Scanner, enter the title and URL of the website you want to monitor, set the monitoring period, and wait for Update Scanner's update prompts. In addition, it can highlight the last updated content of the tracked web page.
In the past, I used Simple RSS Reader to do some simple subscriptions (in fact, they were not really subscriptions). When I encountered blogs that did not provide RSS output, I was unable to do anything. Now with Update Scanner, you can finally abandon Simple RSS Reader.
Site Delta
This Firefox extension does much the same thing as Update Scanner, but displays updates differently. When this extension is installed, a triangle icon will appear on the right side of the browser status bar. If you want to monitor the updates of a certain web page, just open the web page and click the icon, Site Delta will automatically scan the web page. When the user visits this web page again, click the small triangle icon, Site Delta will highlight the updated page. Updated content.
Of course, Site Delta also provides a wealth of options, such as image scanning settings, information prompt sounds, etc., which are highly customizable.
These tools and plug-ins can be said to have their own characteristics and are very convenient to use. If you belong to the "lazy people" series, you might as well give it a try. Through them, you can save a lot of time.
Original address: http://www.duia.org/post/webpage-change-monitoring-services.html