I have tried the PDF Champ PDF Password Remover Tool recently, and I think it performs great when it comes to removing protections from protected PDF files and not changing their original format. In case your PDF document is protected for printing, modification, copying and commenting, you can unlock these functions and will not have any trouble with fonts, images and tables from the initial file. I believe it is great for all kinds of reports, invoices, legal papers, study materials and office documents, which require fast unlocking and do not cause any quality loss at all. Furthermore, it allows unlocking 128-bit and 256-bit AES encrypted PDF files too. The software operates fully offline; thus, your files remain safe and confidential. Also, you can operate the program on all versions of Windows, including 7, 8, 10 and 11. Besides, you might consider trying its free demo version as well.