When it comes uploading your images... smaller is better!

Many of your students will be using older devices with slower network connections.

To get the best quality images in Boom Learning, upload images that are:

  • less than 300k file size and 
  • less than 1400 pixels wide and 1000 pixels tall

Any images that exceed these limits, will be compressed BEFORE they get uploaded. We use browser-based compression that will probably not compress as well as if you use your image editor to compress.

For backgrounds, 1400 x 1000px is the best image size.

For images used as content, you most likely will not want to exceed 500px in either direction.

And a special note about gifs. Gifs WILL animate, and they can produce some really nice value for students if you use them judiciously. But... if we compress a gif because it is too big, it will become a static picture.

On top of this, the Safari scaling engine prefers to blur images when shrinking them to fit into a smaller space. So using smaller native-sizes for your images and lower DPI will actually produce better looking images.