Private by default
Watermark a PDF Without Uploading It
Add a watermark to PDFs and images entirely in your browser. Your file never leaves your device.
Why no-upload tools matter for sensitive documents
ID cards, bank statements, offer letters, and rental or visa documents are sensitive. Tools that upload your file to a server create copies you cannot control. A local-only tool avoids that risk entirely.
How Watermark works locally
Watermark processes your document in your browser using local rendering. There is no server upload, no storage, and no account needed for the core tool.
Standard PDF
Default output that keeps editable PDF text and layers where supported. Fast and lightweight.
Secure Flatten PDF (Pro)
Bakes the watermark into the page image so it is harder to remove in PDF editors. Text may not be selectable, files can be larger, and generation can be slower.
Secure Flatten PDF WatermarkGood watermark text examples
Clear, purpose-bound text discourages misuse. Use a variable like {date} to stamp the current date:
- For verification only, {date}
- For rental verification only, {date}
- For visa application only, {date}
- For salary verification only, {date}
Local-only by design
- Runs locally in your browser.
- No uploads — your file never leaves your device.
- No account required for the core tool.
- Document contents, filenames, and watermark text are never sent to analytics.