Changing the homepage slider images is very simple. Just edit that particular featured post then replace its featured image. That’s it.
If you are new to WordPress and are not familiar with the featured image feature, here’s a step-by-step guide on how to remove or change the homepage slider images.
1 Login to WordPress.
2 While logged in, go to your blog’s homepage.
3 On the homepage, click the link of the slider image you want to change. It will redirect you to the post page.
4 On the post’s page, click either of the “Edit Post” links. It will redirect you to Edit Post area on your WordPress dashboard.
5 Now, find the “Featured Image” box. It is located below the right sidebar, usually you need to scroll down.
6 Click “Remove featured image” link. The image will be removed.
7 To replace removed image, click “Set featured image” link. This will bring up Featured Image popup box.
8 On the Featured Image popup box, you may use existing image from “Media Library” or upload a new slider.
9 To upload a new slider image, click the “Upload Files” tab.
10 Click “Select Files” button to upload the new image slider from your computer. The recommended slider image size is 800pixels by 375pixels. You may use 800px by 400px.
11 When your new image file is uploaded, click “Set featured image” button.
12 Your new featured image is set for this post.
13 Don’t forget to click “Update” button located at the right upper most of the Edit Post page.
14 Check your homepage. The new image slider should be working.
15 That’s it. Repeat steps 1-14 if you want to change the other slider image.