How do you set image size so they remain static and do not change when published?

[Efleda Brophy]

When editing a document, I select the image size that ensures image content is legible. However, when I publish the doc, image sizes change randomly. Those that take up only 1/4 of the full image size allowed, become full-sized images, so the fonts in the image appear 72 pts in size. Even when I try to make sure image sizes are consistent in a document, the published version may show some which remain the same size; and others, radically enlarged.

[Andy Gladstone]

@Efleda Brophy can you post a screen shot to help us troubleshoot? Maybe one of what you see in edit mode, and a second of how it looks when published?

[Efleda Brophy]

Here are some screen captures of figures before publication and then after publication.
Before: both sections are aligned and the same size

After: Top figure remained the same but the bottom expanded

Before: Both figures are the same size

After: top figure expanded a lot; bottom, just a little (I'm going by their positions and sizes in relation to the text above.

[Efleda Brophy]

Before publication. Note size compared to text above the figure.

After publication, the same figure expands to fill the width of the cell.