Feature Description

Once an image attachment has more than one type of image available we need to make sure the correct images are rendered:

Scenario 1 - Render WebP by default

• If the requested browser support WebP continue with the flow, otherwise render a JPEG version.
• If the attachment has a WebP version of the image replace any JPEG version with the exact WebP version of the image.
• If no WebP version exists keep serving the JPEG version

Scenario 2 - Render JPEG version

• If the browser does not accepts WebP version render a JPEG version
• if the current attachment does not have an exact WebP version for the requested image deliver the JPEG version
• If the WebP is disabled via a filter keep rendering JPEG by default.

This filter would be placed in the_content so when the article or articles are rendered the delivered content to the users uses the appropriate image format.

This work is a subsequent step for:

• When uploading, generate both WebP and jpeg format images by default #142