The response is HTML, with no clear way to identify when to stop. The URL of the index page is different from the remaining pages. If we scroll down, the next 8 products are loaded. You will notice that initially 8 products are loaded. Open Developer Tools by pressing F12 in your browser, go to the Network tab and then select XHR. The next example is of a website that requires some creativity to properly handle its pagination. Unfortunately, some websites do not provide structured responses and/or indications when there are no more pages to scrape, so one has to do more work to extract meaning from what is available. The example was fairly simple as the response had a clear indication of when the last page was reached. In the previous section, we looked at JSON responses to figure out when to stop scraping. Once we can use the information that even the browser uses to handle pagination, replicating it ourselves for web scraping is quite easy. You will notice that as you scroll down, more requests are sent to quotes?page=x, where x is the page number. Handling sites with JSON responseīefore you load the site, press F12 to open Developer Tools, head over to the Network tab, and select XHR. The actual data returned by the API can be HTML or JSON. In such cases, websites use an asynchronous call to an API to get more content and show this content on the page using JavaScript. Another important thing to note here is that the URL does not change as more pages are loaded. As you scroll down, it dynamically loads more items, a limited number at a time. This site shows a limited number of quotes when the page loads. Let’s take the Quotes to Scrape website as an example. This kind of pagination does not show page numbers or the next button. # Make links for and process the following pages. "" "Handling pages without the Next button" "" Scroll down to the bottom of the page and notice the pagination: Head over to the Books to Scrape web page. In this article, we will examine these scenarios while scraping web data. Types of paginationĮven though each website has its way of using pagination, most of these pagination implementations fall into one of these four categories: The actual implementation varies with every site. This pager can contain the links or buttons to move the next page, previous page, last page, first page, or a specific page. In the case of pagination in web design, a user interface component, often known as a pager, is placed at the bottom of the page. The solution is to show limited records per page and provide access to the remaining records by using pagination. Such a page takes longer to load and consumes more memory in the browser. Even if it is a small dataset, if all the records are displayed on one page, the page size becomes huge. It is not feasible to display all the data on one page. Most of the websites contain a huge amount of data. What is pagination in web design?īefore understanding how to handle pagination in web scraping, it is important to understand what pagination is in web development. This article will cover practical examples, along with code in Python to handle pagination. While implementation of pagination can vary a lot, fundamentally, they fall into four broad categories. Tackling pagination in web scraping can be challenging when building a web scraper.
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