Palleon has 2 versions (Started with version 2.0). The main difference between these two versions is; login is required for the back-end version, login is not required for the front-end version. Front-end version is optional and can be enabled or disabled from settings.
Documentation: https://palleon.website/documentation/
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Palleon - WordPress Photo Editor
Need an online photo/image editor which is integrated with your WordPress site? Meet Palleon.