There are a few settings for this field which are:
1. Only add images if the product has no image & Skip existing images and import new images (✔️ Update)
By default, it will only add images if the product has no image. If selected the second option, it will import new instead of the existing images.
2. Image Alt Column Mapping
If Stock Sync could not load or find the images that have been specified in the product images column mapping. Map the Image Alt to display text as a replacement.
3. URL prefix
It helps for adding a URL prefix to every image link. It can use when there are images not specified with domains and only have the file path or filename.
If image in feed file hello.jpg and want to add a URL prefix.
By using <image_file> to replace the file name in feed file.
URL prefix "https://www.image.com/images/large/<image_file>.jpg".
4. CDN/Proxy URL
Before enabling Modify image URL, make sure there is an image extension for the URL in the feed file and setup needed.
If enabled, it will deliver the image that is not retrievable via the link. Click here to know more about the setup.
image extesion hello.jpg
5. Default Image URL
It can set a default image URL when the product does not have any image in its column. It supports multiple default images, separated by a comma.
6. Image column Separator
To specify if the image field uses a different type of column separator. By default, it will using as auto selection.
7. URL Option
Unescape url will decode the URL by replacing some characters. If enabled, it will decode the URL by replacing some characters.
https%3A//www.utilities-online.info/ will change to https//www.utilities-online.info/ if enable it.
8. Clear matching product images before importing as new
This option will remove all the existing images. It will revert to disabled after the process to avoid deleting and adding more images.
It will only clear the images of the SKUs that match the feed file with the store.