I get tired of having to use command-line interface (CLI) tools to convert my PNG files to WEBP. The current process is a hassle: take a picture, open it in an editor to crop and, if needed, open another editor to resize it to a particular size. Then, save it as a PNG, open the CLI, and input 

cwebp -sns 70 -f 50 -size 60000 picture.png -o picture.webp 

before you can finally upload it.

So, I created a simple tool that helps me do what I need with most images: Resize, Crop, and save as WEBP."