Choose a cloud service provider:
Select the document file in the RTF format to convert to the OTS format, you can select a file from your computer or your Google Drive or Dropbox account.
Choose the OTS format from the drop-down list as the output format, and click the Convert button, you can convert up to 5 files at the same time and a maximum size of up to 500 MB.
Wait until your file is uploaded and converted into the OTS document format, you can download the converted file up to a maximum of 5 times, and can also delete the file from the Download page.