About Watermark PDF
Overlay a diagonal “DRAFT”, “CONFIDENTIAL”, or any custom text across every page, with adjustable opacity and size. The original content stays fully readable underneath. Everything happens locally in your browser: nothing is uploaded, stored, or logged. This focused Watermark PDF page is designed for teams marking drafts, proofs, internal documents, or confidential material before circulation. It opens directly to the working tool, rather than hiding the function inside a general converter or account dashboard.
The PDF is parsed in memory by browser-loaded document libraries. Pages, text objects, images, and metadata are handled locally before a new download is assembled. Your filename and file contents stay on the device. There is no upload queue, temporary cloud copy, account record, or server-side conversion job to delete later. That makes the tool practical for personal records, work material, and drafts that should not be handed to an unknown processing service.
The operation stays focused on add a diagonal text watermark. You can inspect the result immediately and repeat the task with different settings without a quota or watermark. Processing speed and maximum size depend on your browser and available device memory, which is the honest trade-off for doing the work locally.
FileForge charges nothing for this tool and does not add a watermark. Once the page and its processing engine have loaded, the operation can continue without sending the file over the network. Use the numbered steps below, download the result, and review it before replacing an original file.