Navigate to Tumblr.com and log in to your account to get to your blog’s dashboard. You can control all aspects of the blog and also post images from the dashboard. Click the small arrowhead next to your blog’s name and then click your blog to navigate to it. Click the “Photo” icon at the top of the dashboard and then click the “Camera” icon to open the File Upload window. Select the pictures and click the “Open” button to submit them to Tumblr. To select multiple pictures, hold “Ctrl” and click each one. To select all pictures in the current folder, use the “Ctrl-A” keyboard shortcut. Hover the cursor over each image, click the “Caption” icon, write a photo caption and click the “Set Caption” button. Photo captions are optional. Enter the text for the blog post into the Caption text box. The caption is optional. Click the “Create Post” button to post your pictures to your blog.
