Best for 99% of users. If the file opens but you can't print/edit, QPDF fixes it in 0.5 seconds.

When searching for the "top" tool, is almost always the first recommendation. It is a powerful command-line program that does "structural, content-preserving transformations" on PDF files. GitHub Repository: qpdf/qpdf

Would you like a step‑by‑step guide for any of these tools?

Many repositories on GitHub titled "PDF Password Remover" are simply wrappers around the tools listed above (usually a GUI slapped on top of qpdf ). When evaluating a repo:

is a versatile CLI for adding, removing, or modifying PDF passwords, allowing fine-grained control over user protection flags (e.g., enabling low-res vs. high-res printing). 💻 Developer-Friendly Scripts

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