Media

To view/edit/delete image, navigate from the side menu by clicking Media
Media is the images & video you upload and use in your website. Media is typically uploaded and inserted into the content when writing a Post or Page.

The Media Library Screen allows you edit, delete or view Media previously uploaded to your website. Multiple Media objects can be selected for deletion. Search and filtering ability is also provided to allow you to find the desired Media.
Above of the library, "Add New" button will allow you to add new images & video.
Simply click to the image/video you want to make changes, "Attachment Details" will pop out.

The "Attachment Details" allows you to edit the information (title, caption, alt text, etc.) of media files uploaded to your website.
To make image SEO friendly, simply insert image keyword into "Alt Text" and insert image title into "Title".
Below the image, click "Edit Image" button for advance edit features (crop, resize/scale, rotate, etc.)
To delete the image, click "Delete Permeanently" on bottom right to delete the image forever.