Watermark PDF
Add a text watermark to every PDF page, with adjustable opacity and size.
Your document starts here.
Drop PDF files here, or choose from your device.
100 MB per file · 250 MB per workspace · No uploads
Leave your own mark.
Add a text watermark to every PDF page, with adjustable opacity and size. PDFapp runs this tool entirely in your browser, so you can work without creating an account or uploading documents.
How to use Watermark PDF
- Choose your PDF files from your device.
- Review the file order or adjust the available settings.
- Run the tool and download your result. Clear the workspace when you are finished.
Is this tool free?
Yes. All tools in this MVP are free, with no registration or paid tier.
Where are my files processed?
On your device, inside the browser. Documents are never sent to our server. The host may log ordinary requests for website assets.
Which files are supported?
Unencrypted PDFs and, for image conversion, JPG and PNG files. Large or complex documents may exceed your device's memory. Password-protected PDFs, OCR, signatures and PDF forms are outside this MVP's guarantees. Editing can invalidate digital signatures.
Keep working
Merge PDFSplit PDFRotate PDFReorder PDFDelete PDF pagesJPG / PNG to PDFPDF to JPGPage numbers