How to Put a Background Picture in Your Tumblr Theme

Adding a background picture to your Tumblr can be a great way to make your blog look great and express your personality. These simple steps will teach you how to add any picture you want to your Tumblr background.

1. 
   Sign up or log in to your Tumblr. Go to your own blog by clicking on the title at the top of your dashboard.
2. 
   Click on "Customize theme" on the right side of the screen.
3. 
   Scroll down on the customization sidebar until you reach the "Background" section. Click on the "Upload" button.
4. 
   Select the image you wish to use for your background. It should be as large and as high-quality as possible, similar to the desktop background on your computer.
5. 
   Save your changes. When you have selected an image as your new background, you will see a preview of your new theme. Make sure that it looks how you want, and then click the green "Save" button.
6. Confirm your changes. After you click "Save", click "Close". This will take you back to your Dashboard page. Click on the name of your blog next to "Dashboard" at the top of the page. Then click "Open [name of your blog]" near the top right corner. This will show you your blog as it appears to other users. Make sure that your new background looks how you want it to.