Is it possible to copy Firefox bookmarks with iOS Safari?
Export the Firefox Bookmarks


  
  On the menu bar, click Bookmarks and select Show All Bookmarks to    open the Library window.
  From the toolbar on the Library window, click Import and Backup    and choose Export Bookmarks to HTML....
  In the Export Bookmarks File window that opens, choose a location    to save the file, which is named bookmarks.html by default. The
  desktop is usually a good spot, but any place that is easy to
  remember will work.
  Click the Save button. The Export Bookmarks File window will       close. Close the Library window.
  
  Import the bookmarks.html file into Safari on the Mac by navigating
  to the File menu within Safari, choosing Import Bookmarks…, then
  selecting the file you saved.You may want to delete or archive the
  existing Safari bookmarks first.
  


You can now sync Safari on the Mac with Safari on your iOS devices. iCloud syncing will make this two-way and happen over the network, but you can also sync using USB and connecting to iTunes if the bookmarks will change rarely.