What tools are available for image optimization?

There are many tools available for image optimization, both online and desktop applications. Some popular online tools include TinyPNG, Kraken.io, and Squoosh.app. Desktop applications like ImageOptim, FileOptimizer, and XnConvert offer more advanced features and batch processing. For WordPress websites, plugins like Smush, Optimole, and Imagify can automatically optimize images during upload or on-demand. Web developers can also use build tools like Gulp or Webpack to optimize images during the build process.