Using fetch : const uploadResponse = await uploadPhotoAsync ( uris [ 0 ], newFileName . concat ( ext )) const uploadResult = await uploadResponse . text () let formData = new FormData () formData . append ( 'file' , { uri: localUri , name: filename , type }) const url = ` ${ UPLOAD_PHOTO_TOANDMAP_URL }${ newFileName } ` return await fetch ( url , { method: 'POST' , body: formData , header: { 'content-type' : 'multipart/form-data' } })