CloudConvert
Stamp text or image watermarks onto PDF files online for free. Protect intellectual property with custom opacity, position, and rotation.
or drop files here
Accepted formats: .pdf
Follow these simple visual instructions to convert and process your documents effortlessly.
Select the PDF document you want to stamp with a custom watermark.
Choose Text or Image mode, enter text or upload logo, adjust rotation (45°), opacity slider, 9-grid position, or enable Mosaic tile mode.
Click "Add Watermark" to render the watermark across your pages and save your protected document.
Powerful features engineered for speed, privacy, and flawless document conversion.
Stamp text strings (e.g., "CONFIDENTIAL", "DRAFT") or upload transparent PNG logo images.
Control transparency from subtle watermark overlays to bold stamps with custom rotation.
Repeat the watermark across the entire page surface to prevent unauthorized cropping.
Stamp watermarks over or under existing document content.
Everything you need to know about using our online Add watermark tool.
Need to perform other file modifications? Combine Add watermark with our other free online processing tools.
Add text, shapes, freehand drawing, highlights, and images directly onto PDF pages.
Rotate individual pages or your whole PDF document in any direction.
Insert page numbers with custom positions, fonts, formatting, and colors.
Trim margins or crop specific areas of your PDF pages visually.
Detect, fill interactive AcroForms, and flatten field values into PDF.
Combine multiple PDFs into one unified document in your preferred order.
Separate one page or a whole set for easy conversion into independent PDF files.
Delete unwanted pages from your PDF document in just a few clicks.
Sort, add, rotate, and delete PDF pages in any custom order.
Capture photo scans, apply edge detection, and convert to digital PDF.
Convert JPG, PNG, and WebP images into high-resolution PDF documents.
Convert Microsoft Word (DOCX/DOC) documents into pristine PDF format.
Convert PPT and PPTX presentations into easy-to-view PDF files.