Fotor will provide the print service in the future. So if you want to get higher quality images for printing now, it is recommended to downloads high resolution images in Fotor firstly.
1. In the Edit interface, you can only save images in jpg or png The png format has a higher resolution for downloading.
Click on "Export" above the image > Select the file format as png, it is along with "High" resolution service. 
2. In the Design interface, you can save images as jpg, png or pdf, with pdf being the highest definition and the resolution supporting printing.
Click on "Export" above the image > Select the file format as "High Resolution PDF" 
3. In the Collage interface, you can save images as jpg, png or pdf, of which pdf format is the highest resolution, and the resolution supports printing.
Click "Save" above the image > Select the file format as "PDF(CMYK)" 
If you still have other questions or advice, just contact: support@fotor.com. Or submit your question here.