To mass edit files (change their privacy, tags, watermark, etc.) navigate to
https://dashboard.publit.io/app/resources/files page:
- Click on checkbox on left side next to each file you wish to edit

- Actions menu will show up in top right part of the page (next to the filters)

- Click on Update files option
- Update Files modal will open up.
- Enter desired changes and click on Update to mass edit your files.