When AI redacts your PDF, where does the file go?
We classified every data-redaction MCP server in the official registry by its declared architecture. Half send your file off your machine, and one box is empty.
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Privacy Blog
Learn how to protect your company's sensitive information and discover hidden web dangers.
How to audit a browser-based file tool without trusting its privacy claim
A reproducible checklist for checking whether a web tool sends selected file bytes, including canary data, Workers, dependencies, and honest exceptions.
Read article →How to redact a PDF permanently: a black rectangle is not enough
Covering visible data does not remove it from a PDF. Learn the difference between hiding, redacting, rasterizing, and sanitizing before sharing a sensitive document.
Read article →Your files are not uploaded: how local processing works in PriviTools
What happens after you choose a file, what remains in your browser, what network traffic still exists on a website, and how we test the no-upload claim.
Read article →Processing PDFs in the browser without freezing the UI: Web Workers and local data
What we move into Web Workers, how data moves back to the main thread, and what we verify—without turning a local test into a universal guarantee.
Read article →How we detected and retired orphan SEO variants
One URL per search intent sounded useful. An audit of our static generator showed that the variants had no consistent discovery path and multiplied maintenance work.
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