Blog
Practical, privacy-first guides to working with PDFs — and why your files should never leave your device.
June 4, 2026 · 2 min read
PDF Metadata: The Hidden Data You're Sharing Without Knowing
Every PDF carries hidden metadata — author name, software, timestamps and more. Learn what it reveals, why it matters before you share, and how to remove it privately.
June 4, 2026 · 3 min read
How to Redact a PDF Properly (So the Text Is Actually Gone)
Drawing a black box over text does not redact it — the text is still there underneath. Learn how real PDF redaction works, how to verify it, and how to redact privately.
June 4, 2026 · 3 min read
How to Compress a PDF Without Uploading It
Shrink a PDF's file size without sending it to a server. Learn how in-browser compression works, when to use it, and how to get the smallest file while keeping quality.
June 4, 2026 · 4 min read
Are Online PDF Tools Safe? What Really Happens When You Upload a File
Most online PDF tools upload your file to a server. Here's what that actually means for your privacy, the real risks, and how to use PDF tools without uploading anything.