Are document calculated as one 'credit'?

Yes, but there are some exceptions

In general, converting or merging your file will cost one 'credit'. There are a number of exceptions where more 'credits' are calculated. Below you can see which actions these are.

pdfen documents

  • PDF/A: Document x 2
  • Ocr: Pages x 2
  • Compress: Document x 2
  • PST: Documents x 2
  • Per 10 Pages an extra document
  • Per 5 MB an extra document