Click the + button to browse and add your file from your computer. You're optional to click Add more file to add another file. A maximum of 2 files can be added at one time.
Choose your target format from the drop-down icon beside Convert to. Alternatively, you can select the output format for each item respectively.
Click the Convert button to start the conversion. It will take some time to upload and convert file(s) which depends on your Internet speed.
After the conversion finishes, you can click the Download All button to download the converted file(s) on your computer. Or click the drop-down icon beside the Download button to save converted files to Dropbox, Google Drive or One Drive.