What is SEO?
Search engine optimisation is the art and science of ranking your web page on the top of the search results for relevant searches on search engines like Google and Bing. All the search engines use a combination of techniques to determine which web page should be listed first for a particular search query. There are a lot of parameters including but not limited to the content, the code, and the number of links from external sites that point to one particular site. The external links acts as democratic factors in determining the value and popularity of a page.
How Does It Happen?
When a new page is created, the search engine spiders crawl the web page and take a note of the URL and the code. The code is then processed and it is stored as meta data which contains information about the theme of the content on the web page. After all the information is taken, it is indexed on servers, ready to be presented as a search results.
The Way Out
Pre-rendering basically tells search engines that this is the content that will be displayed to the user after a certain pattern of interaction takes place. In essence, you are revealing to the search engine what the user is likely to experience. This might not affect the user in anyway! You retain the way in which a user interacts with your page but at the same time, inform search engines about what the pages!
It is quite known that the heaviness of the page also contributes negatively when it comes to the performance on search engines. Therefore, it is important to keep your web page as light as possible, irrespective of the technology that you have used to build your mobile app.