I am currently having difficulties with a locked PDF file and want to insert additional pages into this document. However, due to the security restrictions of the document, I cannot access the content or make changes to it. Despite several attempts to use the password, the document remains inaccessible. This has proven to be a significant obstacle in my work, as I cannot make the necessary changes to the PDF file. Thus, I need an efficient tool that would allow me to unlock the locked PDF document and add the desired pages.

The online tool Unlock PDF from PDF24 is exactly what you need. This allows you to unlock secured PDF files with ease, even if you don't know the password. As the tool is web-based, there is no need for downloads or installations. You just upload your locked PDF file and the tool will remove any security restrictions and give you full access to the file. Now you can make any changes, including adding additional pages to the document. The unlocked file can be downloaded immediately and all uploaded files are not saved for security reasons. This effectively and safely removes the barriers that obstruct your work.