# Set main preview **PUT /actions/preview-files/{preview_file_id}/set-main-preview** Set given preview as main preview of the related entity. This preview will be used to illustrate the entity. ## Servers - http://api.example.com: http://api.example.com () ## Authentication methods - Jwt authorization ## Parameters ### Path parameters - **preview_file_id** (string(uuid)) Preview file unique identifier ### Query parameters - **frame_number** (integer) Frame number for movie previews ## Responses ### 200 Preview set as main preview #### Body: application/json (object) - **id** (string(uuid)) Entity unique identifier - **preview_file_id** (string(uuid)) Preview file unique identifier ### 400 Cannot use frame number on non-movie preview [Powered by Bump.sh](https://bump.sh)