Zoho Docs Online Document Management supports multiple files formats and users can upload any file format to Zoho Docs, including ZIP and PDF. Also, you can Archive your files in the following ways.
Extracting Zip Files in Zoho Docs - you can have an online backup of your desktop files by uploading them as Zip. When the uploaded Zip file is extracted, the files inside get unzipped and stored in the defined folders.
Download Files in Zip Format - you can also Zip and Unzip files that are stored inside Zoho Docs. It makes easy to backup all your stored files from Zoho Docs to your desktop.