> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.blab.co/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Built-in Site Optimization

Optimizing is an ongoing practice at Book Like A Boss. We continue to stay up to date and implement changes to ensure continuous improvements.

Here’s an overview of the built-in optimizations that occur automatically. While this list highlights many key processes, it's not exhaustive.

* Image Optimization (for more information, see [Built-in Image Optimization](https://help.booklikeaboss.com/en/articles/10390919-media-guidelines-and-specifications#h_1c62c6659b))
* Video Optimization
* Lazy load images (for more information, see [Lazy Loading and Fonts](https://help.booklikeaboss.com/en/articles/10377094-site-seo-settings#h_cea2b18fee))
* Lazy load heavy widgets
* CDN Static Resources
* Defer non-critical CSS
* Minify CSS
* Extract Critical CSS
* Avoid invisible text during font loading
* Optimize WebFont loading and rendering
* Reduce WebFont Size
* Reduce JavaScript payloads with code splitting
* Minify and compress network payloads
* Preload critical assets to improve loading speed
* Serve static assests with efficient cache policy
* Preconnect to required origins
* Initial server response time is short; <250 ms
* Avoid multiple page redirects
* Preload key requests
* Avoids enourmous network payloads (files larger than 5mb)
* Minimize third-party usage
* Third-party code blocked the main thread for 180 ms
* Avoid large layout shifts
* Use passive listerners to improve scrolling performance
* WebP images (all images have a WebP generated version)
* Brotoli compression
* Continued improvements of lazy loading for new widgets
* Improvement in how custom widgets load
* Videos with auto compress
* Moved nearly all assets to CDN
* Concatenating CSS files (fewer requests)
* Continued Critical CSS improvements