Skipping the signup wall entirely
A signup wall on a "free" tool usually exists to capture an email address for marketing, not because the conversion technically requires it. PrivaPDF's free tier — 5 conversions a day — works from the first visit, with no signup form standing between you and the download button.
If you end up converting PDFs often enough to want more than 5 a day, upgrading to Pro is there, but it's an opt-in choice rather than a gate blocking basic use.