Adding an Image to the Header
Log in to your Tumblr dashboard, then click the arrow next to the name of your primary blog. Click the name of the blog to modify in the pop-up dialog box. The dashboard refreshes to display the timeline of the selected blog. Click the “Customize” link to open the Customize menu. Click the “Upload” button in the Header field in the Appearance section. Browse to and click on the picture to add to your theme. Click “Open” to upload the photo. The image uploads and displays on your theme in the Preview window. Click the “Save” button in the Customize menu, then click “Exit” to close the menu.
Adding an Image to the Description
Open the blog to edit in your dashboard, then click the “Customize” tab to open the Customize menu.
Insert the following code into the Description box in the Customize menu or click “Edit HTML,” then insert the code directly into the theme code using the HTML editor. Replace both instances of the URL with the URL to a hosted image.
Click “Update Preview,” if you are using the HTML editor, to preview the embedded image in your theme. If you edited the Description box in the Customize menu, the image will display after you save the page.
Click “Save” to save the theme with the inserted image. Click “Exit” to close the Customize menu.
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