Guides
Privacy, explained plainly.
Five short reads on what your files give away and how to stop it.
Why black-box PDF redaction failsDrawing a black rectangle over text hides it from the eye, not from the file. Here is what actually happens inside the PDF.
5 min read
What metadata your phone photos leakLocation, time, device, and sometimes a hidden thumbnail. A tour of what is inside a typical phone photo, and what to do about it.
5 min read
HEIC vs JPG: which should you use?HEIC makes smaller files with better quality, but JPG opens everywhere. How to decide, and when to convert.
4 min read
How to verify a website does not upload your filesAny site can claim "100% private". Your browser can show you whether it is true. A step-by-step guide to the Network tab.
5 min read
PDF metadata: what your documents revealAuthor names, software, timestamps, edit history and more. What is hidden in a PDF and how to remove it before sharing.
5 min read