CodeASystem PDF tools
Put your mark on every PDF page.
Add text, adjust its appearance, and download a new PDF with the same watermark on each page.
Watermark PDF pages
Add the same text mark to every page, then download the updated PDF.
Text size uses points. Opacity ranges from 0.05 to 1, and angle uses degrees.
Your file stays in this browser tab. It is not uploaded to CodeASystem.
How it works
Set it once. Apply it everywhere.
Choose your text, size, opacity, and angle. The tool draws the text in the centre of each page, then saves a new PDF without uploading your file. It is intended for ordinary, unlocked PDFs, so check the download before sharing or relying on it.