2022年4月11日 — Upload your PDF file to our Protect PDF tool. · Enter the password you want to use. · Click “Encrypt PDF” and let the tool work its magic!
2023年6月5日 — At Smallpdf, we use TLS encryption in our protected environment while you upload, convert, and download your files. These files are also removed ...
2021年6月2日 — First, head over to our Protect PDF tool. · Choose your file, or drag and drop it into the field. · Input your top-secret password, and click ' ...
You can use our Password Protect tool to protect your PDF file with a secure and nearly unbreakable password at no cost. We've written a few articles to guide ...
2021年11月1日 — Our popular Protect PDF tool allows you to encrypt your PDF files with a nearly unbreakable password, but of course, you'll need to remember it.