Authorization and access Authorization process is described here. Each API request must also consist of unique Api-key obtained during application registration together with client_id and client_secret. Headers Accept: multipart/form-data Content-type: multipart/form-data Authorization: Bearer {access_token} Api-key: {unique_app_api-key} Available file types JPG, GIF, PNG, BMP, PDF, ODT, DOC, TXT, DOCX, TIFF, ODS, XLS, XLSX, PPT, RTF Uploading …