[WP] Image thumbnails are blank
This guide will help you If your WordPress thumbnails or large images are not displayed. Why it may happen:
- One of your plugins or theme itself overrides image resizing filter or does not map all media files.
- Your WordPress media folder doesn't have write permissions, or images weren't added in default WP way.
- Your server is missing a library that resizes photos, such as PHP GD or ImageMagick.
There are two ways to fix this problem:
Image optionssection, remove values from
Thumbnail height, this will make slider use default WordPress
thumbnail. Note that default
thumbnailimage size by default generates square image 150x150px, so you might need to change the size of
Thumbnailssection of slider options. If you wish to change this 150x150 size, you may define custom WordPress image size - https://rshelp.dimsemenov.com/wordpress-royalslider-advanced/wp-using-wordpress-image-sizes
If after you deactivated all third-party plugins and switched to default theme it still doesn't display images, make sure that
wp-content/uploads/ **folder has write permissions and PHP GD or ImageMagick are installed on a server.
RoyalSlider uses Aqua Resizer script for resizing of images, which uses default WordPress resizing functions.