Updated to Adobe Photoshop Plug-In and Connection SDK 2021 v1 (2022).
Updated to libwebp 1.2.2.
Added a close button to the About WebP dialog.
Increased the Encoding Settings dialog dimensions (bigger preview).
Built with Microsoft Visual Studio Community 2019 16.11.10.
Tested on Windows Server 2016 Datacenter with Photoshop 2022 (v 23.2.0) x64, Release.