Can I replace filename and size label on the page after upload to a custom text?

uploadcare-widget-file-name and uploadcare-widget-file-size are CSS classes that interest you. You want to modify their content, so add following to your style sheets: 


.uploadcare-widget-file-name:before {
content: "Edit"; 
visibility:visible;

}

.uploadcare-widget-file-name {

visibility: hidden;

}
.uploadcare-widget-file-size:before {
content: ""; 
visibility:visible;

}

.uploadcare-widget-file-size {

visibility: hidden;

}