THE READER.ME JOURNAL

Notes on PDFs, privacy, and standards.

How the tools work, why your files never leave the browser, and the technical detail that matters.

PDF encryption explained: what AES-128 really protects

What it means to encrypt a PDF, how AES-128 works, the difference between an open password and permissions, and what password protection does and doesn't cover.

Antonia González · Jul 14, 2026 · 7 min read

PRIVACY

Freelancers: invoices and contracts in PDF, nothing uploaded

Jul 12, 2026 SECURITY

Finance and advisory firms: PDFs with bank data, kept private

Jul 10, 2026

Latest

Privacy

PDFs in education: privacy for teachers and schools

School PDFs carry data about minors: report cards, records, permission slips. Why they should never go to an upload site, and how to handle them locally.

Jul 8, 2026 · 7 min read Privacy

Real estate: sign and share contracts privately

Deposit agreements, reservations and leases are full of personal and bank data. Sign and send them without printing, and without uploading a client's file anywhere.

Jul 6, 2026 · 6 min read Security

Healthcare PDFs: clinical records and patient privacy

Clinical records are special-category data under GDPR. Why health PDFs should never touch an upload site, and how to handle them safely on your own machine.

Jul 4, 2026 · 7 min read

No spam. Just PDF craft.

Once in a while, a useful note on PDFs and privacy.