# PageSpeed Insights Rules

> [!CAUTION]
> **Deprecated** . This page was written for version 4 of the PageSpeed Insights API, which is deprecated and will be shut down in May 2019. [Version 5](https://developers.google.com/speed/docs/insights/v5/get-started) is the latest and provides both real-world data from the Chrome User Experience Report and lab data from Lighthouse.

- [Avoid landing page redirects](https://developers.google.com/speed/docs/insights/AvoidRedirects)
- [Enable compression](https://developers.google.com/speed/docs/insights/EnableCompression)
- [Improve server response time](https://developers.google.com/speed/docs/insights/Server)
- [Leverage browser caching](https://developers.google.com/speed/docs/insights/LeverageBrowserCaching)
- [Minify resources](https://developers.google.com/speed/docs/insights/MinifyResources)
- [Optimize images](https://developers.google.com/speed/docs/insights/OptimizeImages)
- [Optimize CSS Delivery](https://developers.google.com/speed/docs/insights/OptimizeCSSDelivery)
- [Prioritize visible content](https://developers.google.com/speed/docs/insights/PrioritizeVisibleContent)
- [Remove render-blocking JavaScript](https://developers.google.com/speed/docs/insights/BlockingJS)