the pictures are never ever the same size-- screen shots from websites, not always the same websites, not always the same width (however, they are always the same height). I had made a version of this with a text box, but the department came back to me and showed how the text box is too limiting and inconsistent because of the width differences every time.

Is there not a way to standardize the distribution between images? Like, how if you click "distribute horizontally", it makes the two white spaces between the three images equal. Is there no way to distribute horizontally to a defined value?