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How to know when there are changes to a web page (EJ: prices, comments, updates)

Cómo saber cuando hay cambios en una página web (EJ: precios, comentarios, actualizaciones)

Following a limited range of products on a website, following new blog comments, or the latest news from a certain category in an online newspaper are some of the reasons why you might want to monitor website changes on your phone. your mobile.

To be able to track or track changes made to a webpage on an Android mobile phone, simply install an app like Web alert (website monitoring), which can be downloaded from the Play Store, which generates notifications on the device each time it detects a new change in a user-indicated webpage.

This application allows you to monitor changes in an entire web page, as well as changes in a specific section of a page. For example, it allows you to track the full price page of a product on Amazon or Mercado Libre, but it can also help detect changes to a specific offer on that page to see if its price is low.

I know if I change the price on a page 1 I know if I change the price on a page 2 I know if I change the price on a page 3

Using the browser built into Web Alert, you need to go to the page you want to monitor. Touch approval at the top to mark the area, area, or section of the page you want to monitor, and click approval again to complete. If you want to monitor the entire page, just tap twice on the start.

Monitor only one section of the web page.

Monitor only one section of the webpage.

When there are changes to a page, the app warns by generating a notification on your Android mobile phone. These can also be seen by entering the application. By touching the page with new changes, you can see exactly what has changed on it: if the text has been deleted, it will appear in red and if the new text has been added to the page, it will appear in green.

Details of changes from a webpage.  Content removed in red and content added in green.

Details of changes from a webpage. Content removed in red and content added in green.

Web Alert also allows you to monitor URLs with an authentication between them, meaning the user can monitor changes in the mailbox or, in general, any page that needs to be entered using a username and password.

If the phone is connected via Wifi, the application monitors every 3 hours if there are changes in the web pages added by the user, but this frequency can be changed in the application settings. This parameter can also be adjusted separately for each page.