Add Watermark
Add text watermarks to your PDF. Customize position, opacity, color, and rotation.
Drag & drop your PDFs here
or click to browse your files
Max 100 MB per file
Select a PDF to add watermark
Capabilities and limits
- Accepts
- PDF, Watermark text
- Produces
- Watermarked PDF
- Limits
- 100 MB per file; Text watermarks only
What happens to your document
- 1. Browser inputYour browser reads the file you select. Document bytes are not sent to a LocalPDF processing API.
- 2. Local resultThe tool performs the operation in this tab and creates its result in browser memory.
- 3. Your downloadYou choose whether to download the result. Browser memory is cleared when the page is closed or reloaded.
Why Process PDFs Locally?
Supported workflows process document bytes in the browser without a document-byte upload to LocalPDF. Device, browser, extension, download, storage, and later-sharing risks remain separate boundaries.
Review the no-upload verification method →Related Guides & Articles
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