Add an open password to a PDF so it asks for the password before it can be viewed.
The protected copy uses the standard PDF password feature, so every common PDF reader (Adobe Acrobat, browsers, phone apps) asks for the password before showing the pages. After opening it, printing and copying are allowed. Your original file stays as it was.
To apply the password in the browser, each page is re-drawn as an image first. That means text in the protected file can't be selected or searched, and the file may be larger or smaller than the original depending on what's in it.
The encryption used here is the older 40-bit RC4 type from the original PDF standard, which is what the jsPDF library supports. It reliably stops someone from simply opening the file, but a person with password-cracking software and time could break it. For legal, medical or financial files where real security matters, use a desktop tool that offers AES-256 encryption, such as Adobe Acrobat.
A long password helps more than anything else. Our Password Generator can make one for you.
There's no recovery option, because we never see the password or the file. Keep your original, unprotected copy.
No, OneClickly doesn't have an unlock tool. If you know the password, open the PDF in your reader and print it to a new PDF without one.
The pages are turned into images before the password is applied. Keep the original if you need searchable text.
No. Both stay in your browser; the protected PDF is created on your device.
OneClickly is a set of 119 free tools for PDFs, images, text, everyday math and code. They run in your browser, so the files and text you work with stay on your device.