The Media Settings page controls the various settings related to images and other media that are used in writing posts and pages.
Click on Media link, under Settings menu:
Once the opens, you can edit the media settings for your web blog:
1. Enter the width and the height for the thumbnail image size. The default value is 200 x 115 pixels.
2. Check the box if you want to crop the thumbnail to exact dimensions.
3. Enter here the maximum width and the height for the medium image size. The default value is 930 x 362 pixels.
4. Enter here the maximum width and the height for the large image size. The default value is 800 x 800 pixels.
5. Click here to save all changes made in this page.