Privacy as an architecture, not a policy
Most "privacy-focused" PDF tools express that as a set of policies — a promise not to sell your data, a commitment to delete files after some window, a privacy policy PDF nobody reads. Those are trust-based claims that could change with a new owner, a new business model, or just a bug.
PrivaPDF's approach is architectural instead: sign, merge, compress, and convert all run inside your browser tab using WebAssembly, so there's no server in the request path to make privacy promises about in the first place — you can verify this yourself in DevTools rather than take it on faith.