How to Insert Thumbnails in WordPress

1. Sign into WordPress.
2. Click on 'Posts' or 'Pages,' depending on whether you want to insert a thumbnail into a post or a page.

3. Click 'Add New' to create a new article, or click on the title of an existing article you want to modify.
4. Click the 'Add an Image' icon above the text entry box. This icon is a small rectangle that resembles a photograph.
5. Click 'Choose File.'
6. Double-click on the image file on your computer that you want to insert.
7. Click the circle next to 'Thumbnail' in the 'Size' section.
8. Click 'Insert into Post/Page.' A thumbnail version of that image, linking to the full-sized version, now appears in your post or page.