WebP — first announced by Google in 2010 — is an open image format based on the VP8 video format and is a more efficient alternative to PNG, JPEG and GIF.

In general you can expect a 25–35% size reduction in images converted to WebP, but in real-world usage you can often see reduction of up to 90% without visible quality loss.

WebP Pros

  • Typically smaller file sizes than JPEG, PNG and GIF (still images)
  • Supports both lossy (removal of less visible image information) and lossless (visually identical the original image) modes
  • Supports transparency (unlike JPEG)
  • Supports animation (unlike JPEG or PNG)

WebP Cons

Dynamic rendering (and dynamic serving) is a technique where a web server, web app or website renders and serves its content in a form most discernable to the visitor.

In the context of SEO (Search Engine Optimization) and SMO (Social Media Optimization), dynamic rendering involves serving a statically rendered version of a page to search engines and social media bots in order to improve indexability.

Though Google and other search engines are now capable of rendering Javascript, it’s not perfect and is sometimes unsuccessful if the page fails to render (fully) in a timely manner.

This is especially important for…

Gordon the Gohper

Improve SEO & website performance by 50% or more · No coding required · Static Prerendering · Responsive Image Resizing & Optimization · Free HTTPS/SSL

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