Stamp a text watermark (CONFIDENTIAL, DRAFT, your name…) onto every page of a PDF. Customisable position, size, opacity, colour, rotation.
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PDF up to 50 MB (50 MB)
Combine multiple PDF files into a single document
Split a PDF document into separate files by page ranges
Extract text content from PDF documents
Convert images (JPG, PNG) to a PDF document
A watermark stamps every page of a PDF with text — typically labels like CONFIDENTIAL, DRAFT, INTERNAL ONLY, or your name and date. It signals ownership, marks documents as preliminary, or makes screenshots harder to repurpose. This PDF Watermark applies your chosen text to every page of an uploaded PDF in your browser using the pdf-lib library — no upload, no server processing, no watermark on a "free trial" sample output. Configure font size, opacity, colour, position (center, corners, diagonal), and rotation. The original PDF is not modified — a new file with "-watermarked" suffix is downloaded.
CONFIDENTIAL diagonal 45° 64pt 25% opacity grey → leaked-document deterrent DRAFT center 120pt 15% opacity red → unfinished version warning © Your Name 2026 bottom-right 10pt 80% opacity black → copyright on photo PDFs SAMPLE diagonal -45° 90pt 35% opacity amber → portfolio/sample marker