About the PDF Watermark Tool (English)
A watermark stamped across the pages of a PDF does real work. It marks a document as a draft so nobody mistakes it for the final version; it flags a file as confidential or internal-only before it is shared more widely than intended; and it places a name or logo across the page to discourage unauthorised copying or to reinforce branding on a proposal, quotation, invoice or report. Applying that mark by hand to every page of a long document would be slow and error-prone — and it is exactly the repetitive job this tool automates in a few clicks, entirely inside your browser.
With the ApneSoftware PDF Watermark tool you can add either a text watermark — such as “CONFIDENTIAL”, “DRAFT”, “SAMPLE”, “PAID”, or a company name — or an image watermark like a logo saved as a PNG, JPG or SVG. Text watermarks can use a sans-serif, serif or monospace font, be made bold, italic or underlined, carry a soft drop shadow, and take any colour you choose through a colour picker or a precise hex code. Image watermarks keep their transparency, so a logo with a see-through background sits cleanly over your pages without an ugly white box around it. Whichever type you pick, you control the opacity so the mark can be a faint tint that never obscures the text underneath or a bold statement that dominates the page.
Positioning is handled by a simple nine-point grid: top-left, top-centre, top-right, the three middle positions, and the three along the bottom. A margin slider nudges the mark away from the very edge of the page, and a rotation control — with quick presets at 0°, 45°, 90° and −45° plus a full 0–360° slider — lets you set the classic diagonal draft angle or lay the text flat. If you want the watermark to blanket the whole page rather than sit in one spot, a tile / repeat option stamps it in a light, evenly spaced grid, which is a popular look for protecting sample documents and photographs shared as PDFs.
One feature that sets a professional watermark apart is layering. By default the watermark is drawn above the page content, which is right for a bold stamp. But you can also place it behind the content, so existing text and images sit on top of the mark exactly like a printed letterhead or a background seal. The tool achieves this by rebuilding each targeted page with the watermark drawn first and the original page content layered over it, giving a genuine background watermark rather than a translucent overlay.
You rarely want the same treatment on every single page, so the tool includes flexible page targeting. Apply the watermark to all pages, only the first page (handy for a cover stamp), only the last page, all odd or all even pages, or a precise custom range typed as 1-3, 5, 8-10. A live preview renders the actual page with the watermark drawn exactly where it will land, and you can page through the document and zoom in to check the result before committing — no guessing, and no need to process the whole file just to see whether the size and angle look right.
When you are happy, the output options give you the final polish. Rename the downloaded file, choose whether to preserve or remove the document metadata (title, author and similar fields), and optionally compress the output using object streams to keep the file size down. You can download the watermarked PDF instantly or send it straight to your printer. Password-protected PDFs are handled locally so you can still add a watermark to a document you have the right to open, and large multi-hundred-page files are processed page by page to keep memory use reasonable.
Above all, the tool is built around privacy. Every step — reading the PDF, rendering previews, drawing the watermark and saving the result — happens on your own device using JavaScript in the browser. Your document is never transmitted to any server, which matters when the underlying content is sensitive even before a watermark is added: contracts, medical records, financial statements, unreleased designs, exam papers and internal reports can all be marked without leaving your computer. There is nothing to install, no account to create, and we never add our own branding to your file. The only change to your PDF is the watermark you chose to apply; every other byte of your document stays exactly as it was.
Typical users include legal and accounting firms marking drafts before a document is finalised, photographers and designers protecting proofs shared with clients before payment, businesses stamping internal reports as confidential before circulating them, educators and students distinguishing working drafts from final submissions, and small businesses adding a logo to quotations and invoices for a professional finish. Because it runs offline once loaded, it is equally at home on a laptop with a patchy connection or on a shared computer where installing software is not an option.