Add text or a logo as a watermark — on every page or only on the ones you choose.
The watermark is added to the PDF without converting it to an image: the original content, selectable text and quality stay intact. Text with non-Latin characters is inserted as an image, in the watermark only.
Choose the document you want to watermark.
Type the text (e.g. "CONFIDENTIAL" or "DRAFT") or upload an image/logo, and adjust the size, angle, position, color and opacity.
The watermark is applied to all the pages you chose, and the resulting PDF is ready to download.
It doesn't have to — you can adjust the opacity so it's clearly visible without making the text underneath unreadable, and choose whichever position you prefer (diagonal, centered, corner).
Yes, besides text you can also upload an image (such as a PNG logo) to use as a watermark.
Yes, you can choose to apply it to all pages or only to a specific range.
No. All processing happens inside your own browser — the file never leaves your computer or passes through any external server. You can confirm this by disconnecting from the internet once the page has loaded: the tool keeps working normally.
No. PDFsy doesn't ask for sign-up, an account or payment — just open the page and use the tool.
Yes. PDFsy offers PDF tools equivalent to iLovePDF's — merge, convert, compress, protect and much more — available in 25 languages, with no usage limits, no need to create an account, and 100% local processing in your browser, without uploading any file to any server.