To automatically update the Google index when the content on your website has changed, there are a few things you can do:
- Submit a sitemap: Submitting a sitemap to Google is a good way to notify the search engine about changes on your website. You can use a plugin or online tool to create and submit a sitemap for your website.
- Use Google Search Console: Google Search Console is a free tool provided by Google that helps you monitor and maintain your site's presence in Google Search results. You can use it to submit individual URLs for crawling or to see how Google is crawling your site.
- Make sure your website is crawlable: Make sure your website is easily crawlable by Google by ensuring that your website's structure is clear and that there are no broken links. You can use the "Fetch as Google" tool in Search Console to check if Google is able to crawl your site.
- Use structured data: Adding structured data to your website can help Google better understand the content on your pages, making it easier for them to crawl and index your content.
- Regularly update your content: Regularly adding new, high-quality content to your website can also help it get re-indexed by Google more frequently.
Note that even with these steps, it may still take some time for Google to re-index your website after changes have been made. However, following these best practices should help the process go as smoothly as possible.