As well as image storage Flickr also records all of the camera settings. The Flickr engine " improves " the image in the way that it is rendered so I use it to check multiple shots of the same subject to see the one that I like the best. By using a screenshot you can copy the Flickr images to create a collage.

Flickr can be used for third party hosting here and on other platforms. This Flickr screenshot has been uploaded again as a collage.

Screenshot_2021-05-10 Nicholas Chipchase by Nicholas Chipchase, on Flickr

To add the Flickr image use the BB Code and select the image size. Above is medium.

Screenshot_2021-05-10 Nicholas Chipchase(2) by Nicholas Chipchase, on Flickr

The above screenshot image is the largest size.