When you create a thumbnail using the Insert Image window, you have the option of specifying the height and width of the thumbnail image. However, the exact values you enter may not appear in the code. This is because the HTML Editor automatically maintains the image's aspect ratio. Here's how it works: Whichever value (the width or height) is larger is applied to the thumbnail, and the other value is adjusted to preserve the appearance of the image. This keeps the image from getting smooshed or stretched out.