Guides

These are written to be the complete answer to a question people keep asking, not to sell a tool. Where one of our tools is relevant it is linked, but each guide stands on its own.

• How to check whether a website uploads your file.
  A five-minute method, using tools already in your browser, to see whether an online converter sends your file to a server. Works on any site.
• How PDF unlocking actually works.
  Why removing a PDF restriction is instant and needs no password cracking, what the two kinds of PDF password really are, and where the line is.