Create preview file
Main resource to add a preview. It stores the preview file and generates three picture files (thumbnails) matching preview when it's possible, a square thumbnail, a rectangle thumbnail and a midsize file.
POST
/pictures/preview-files/{instance_id}
curl \
--request POST 'http://api.example.com/pictures/preview-files/a24a6ea4-ce75-4665-a070-57453082c25' \
--header "Authorization: $API_KEY"
Response examples (201)
{
"id": "a24a6ea4-ce75-4665-a070-57453082c25",
"extension": "png",
"file_size": 1024000
}