Optimizing an image means reducing the file size as much as possible without sacrificing the quality. This will lead to a faster load time for your online course and happier students. In this tutorial, you will learn 3 methods to optimize images.

Optimal file size for web images is:

Pixel size: 400px X 600px

File Size: 20K - 200K

Preferred file format: JPEG

Method 1: Make the image smaller

reduce the file size by making the image dimension smaller. You can do this with the following software:

• Photoshop Express
  • How do I resize images using Photoshop Express
• Photoshop
• GIMP
• https://picresize.com/en/batch

Method 2: Use a online image optimization generator 

• TinyPNG
• TinyJPG

Method 3: Use Photoshop

When saving your image

1. File > Export > Save as Web (Legacy)
2. Tweak until file size is around 20-200K
3. Save