Your file is processed on your device and is never sent to any server.
Stamp text diagonally across every page — great for "CONFIDENTIAL" or "DRAFT". Processed entirely on your device.
A watermark — CONFIDENTIAL, DRAFT, or your name — across each page signals how a document should be treated and discourages misuse. CorePDFTools adds watermarks in your browser.
Watermarking a sensitive draft on someone else's server defeats the purpose. Doing it locally keeps the document private. A medium, semi-transparent watermark stays readable over your content while clearly marking the document's status.
Stamp the status across every page to signal how it should be treated.
Place your name or company across pages to discourage misuse.
A flattened watermark becomes part of the page and is hard to remove cleanly. It's a strong deterrent, not encryption.
Set a medium opacity so the watermark is visible but your content stays readable underneath.
No. The watermark is applied in your browser.
A flattened watermark becomes part of the page and is hard to remove cleanly — it's a deterrent, not encryption.