Image Optimization is a Galleries’ tool which is integrated with TinyPNG plugin. It optimizes website loading by using smart lossy compression techniques to reduce the file size of your PNG files.
First of all, you need to login in TinyPNG by entering API. To create your API key, you need:
- Open the site: https://tinypng.com/developers
- Enter your Name and E-mail
- Click on Get your API
- At your email you will receive letter with a link. Open it to find your personal TinyPNG API Key
Open Image Optimizer and click on Change Details to enter your API key.