For example, users take pictures with iPhone and upload them to Mattermost. The file size of the photo data is easily 5MB - 9MB.
For mobile users, I think that this is also a large amount of packets.
When attaching images with e-mail software, e-mail software has a function to compress and edit images and attach them. Is there a way to have a function to compress and attach images when uploading images with Mattermost? Or forcibly change to prescribed size by basic setting etc.