warning message from my anti-virus

Hi @duetltd!
Of course we’re not putting malware on computers ?? Avast just had a false-positive. It’s not the first time (won’t be the last), apparently A/V software is really good at flagging compression software as malware.

At least, that’s assuming you got the plugin from here on www.ads-software.com. If you got it elsewhere, someone might slip in something nasty.

However, you can compare cwebp.exe against the official download from Google to make sure: https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.2.0-windows-x64.zip