Indexing image url in search api drupal 8
It looks like that should be available as a field.



If your field name is "field_image", you would select "field_image:entity:uri".  I think that would give you "public://path-to-file-in-public-directory.jpg"

You could add a custom field to your index in a custom module at src/Plugin/search_api/processor:

In this way, you can add any sort of custom value that's not available by default in the fields provided.