YouTube video and Blogger image uploading and formatting specifications. [Note: These instructions are written for the classic Blogger post editor, composing in the Edit Html tab.] Instructions for posting wide screen YouTube videos. To embed wide screen videos, go to the video's url on YouTube . To the right of the Embed code, click on the Customize button. In the menu that expands below the Embed code, select 640x385 . Copy the Embed code and paste it into your post. Instructions for uploading images to be 640 pixels wide. [Note: These instructions work for images that are wider than they are tall.] In the image uploader, Choose a layout: "None", Image size: "Medium" To upsize images, double the width and height specifications of the image (width: 640px; height: XXXpx;) and change s320 to s640 in the image url. Advanced Image Editing: To place two "Medium" images side-by-side, delete the return break between them. Blogger's picture uploader d...