I am looking for an effective method to automate the conversion of multiple images to WebP image format. I am particularly interested in a method that saves metadata or allows me to add or edit metadata.
The easiest way: <cfexecute> with cwebp https://developers.google.com/speed/webp/docs/precompiled
<cfexecute>
cwebp
Regarding metadata ...
WebP format supports EXIF / XMP metadata. The next version of the WebP library (libwebp) will have corresponding APIs that support EXIF / XMP Metadata processing, as well as binary files support for converting JPEG / PNG to WebP format, preserving metadata from the source files.
Quote from WebP Google Group. Meanwhile, complete release 52 for the latest updates? https://code.google.com/p/webp/issues/detail?id=52