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Problem:
After installing and then deleting WPML, you noticed duplicated images in your library and are seeking a way to eliminate these duplicates.
Solution:
If you're experiencing duplicated images in your library after uninstalling WPML, we recommend reinstalling WPML and following our guide to remove second language data, which might help in clearing out duplicates. You can find the guide here: Deleting Languages and Plugin Data by Doing a WPML Reset on Your Site.
If this does not resolve the issue, the remaining solution would be to manually select and delete the duplicate images.

Please note that the solution might be irrelevant if it's outdated or not applicable to your case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the problem persists, please open a new support ticket at WPML Support Forum.