## How to build SEO friendly Single Page Applications?

In order to make your Ajax website SEO friendly, you should implement the [Dynamic Rendering recommendation](/content/faq/what-is-dynamic-rendering/index.html). This will give you a guarantee that contents will always be correctly retrieved and indexed. While the old Ajax crawling scheme specification was only supported by a limited number of bots, the new Dynamic Rendering recommendation allows you to serve HTML snapshots to any bot.

Google offers an open-source project called [RenderTron](https://github.com/GoogleChrome/rendertron) which is based on a headless version of Chrome. To use it, you have to install and maintain it yourself. An alternative is to use a service like SEO4Ajax which allows you to implement easily on your website the new Dynamic Rendering recommendation or the old [Ajax crawling scheme specification](/content/faq/what-is-the-ajax-crawling-scheme/index.html) without any hassle by copying/pasting the snippet of configuration provided in the site settings page.

If you have questions or comments about this FAQ, please contact us by [email](mailto:contact@seo4ajax.com).