Mark a document copy
Choose a PDF, enter watermark text, and download a marked copy.
Input
CONFIDENTIAL
Output
document-watermarked.pdf
PDF Tools
Watermark PDF
Add a simple PDF watermark locally in your browser without uploading the file.
Waiting
Runs in your browser. Files do not leave your device.
Input
Watermark PDF. Process files locally in your browser. Nothing is uploaded.
Drop files hereUp to 25MB each and 75MB per batch.
Guide
How to use Watermark PDF
Step-by-step
- Choose or enter pdf in the workbench.
- Run the edit tool locally in your browser.
- Download the pdf result and review it before sharing or archiving.
- Use the related tools on this page for cleanup, validation, conversion, or the next step in the workflow.
Questions
Is Watermark PDF free to use?
Yes. The public tool is free to use in your browser.
Are my files uploaded?
No. This tool runs locally in your browser, so selected files or pasted input are not uploaded to Convurter.
What should I check before using the pdf result?
The output is a new PDF copy. Review the final output before using it in production work.
What can I do after this?
Good next steps include PDF Metadata Viewer, Merge PDF, and Split PDF.
Workflow fit
Use Watermark PDF in the right place
If you are unsure, start from the PDF chooser and pick by task: inspect, organize, compress, convert, print, compare, or flatten.
Best for
- PDF workflows where page order, hidden document signals, output size, or final sharing quality matters.
- Preparing a review, upload, print, or archive copy without turning the page into a generic article detour.
- A focused edit task where the expected output is pdf.
Before you start
- This tool runs in the browser, so keep the tab open until the result is created and downloaded or copied.
- Keep an original PDF copy outside the workbench before creating edited, flattened, compressed, or converted outputs.
- If the document has passwords, unusual permissions, forms, annotations, or scripts, inspect those signals before finalizing a sharing copy.
- Finish page-order changes before adding page numbers, watermarks, compression, or other final-copy operations.
- Confirm the exact input and output expectation before running the tool.
Quality checks
- Review the output before sharing, publishing, submitting, or using it as a final artifact.
- Open the output PDF in a reader after processing; PDF structure can change even when the visible pages look similar.
- Check page count, page order, orientation, metadata, and file size against the actual destination requirement.
- Use checksums when the exact final copy needs to be referenced later.
- Download and open the file output before leaving the page or deleting the source copy.
Common mistakes
- Compressing a PDF before deleting, extracting, or reordering pages creates extra throwaway versions.
- Assuming visible page content is the whole document misses metadata, links, attachments, actions, annotations, and permissions.
- Using text extraction on scanned pages will not create OCR text. Treat no-text results as a scan signal.
- Closing the tab before downloading or copying a browser-generated result.
- Treating the first result as final without checking the destination requirement.
Continue the workflow
Use these when the current result is only one step in a longer task.
Verify or clean up
Use these when the output needs checking, cleanup, comparison, compression, or a final share-ready pass.