Watermark PDF

Browser-local

Fast action

wave 3

Add a diagonal watermark with opacity, angle, and page selection control.

Files

Source

No PDF selected

Size

0 B

InputsWatermark PDF0 filesLive

Switch PDF actionShow

Merge Split Extract Delete Duplicate Rotate Reorder Compress Image to PDF Page numbers Text extract OCR Pro Fill & sign Editor Pro Bates Watermark Header/footer

PDF workflow rail

17 actions

Merge Split Extract Delete Duplicate Rotate Reorder Compress Image to PDF Page numbers Text extract OCR Pro Fill & sign Editor Pro Bates Watermark Header/footer

Input file

Local only

Drop a PDF file here or browseSingle file workflow with browser-local processing.

No files queuedBrowser-local workflowPDF input

Watermark text

Target pages

Opacity (0.05 - 0.9)

Angle

Flow

Set watermark text, opacity, angle, and target range.
Draw centered diagonal watermark on selected pages.
Export a watermarked output copy.

Example

Worked example: confidential deck

1 Upload board-deck.pdf.
2 Set text to CONFIDENTIAL, opacity to 0.2, and range to all.
3 Run watermark and download result.

Selected pages carry a visible but readable watermark.

How

Upload one PDF.
Set watermark text, opacity, and angle.
Run action and download output.

Cases

Mark confidential board materials.
Tag training packs as INTERNAL.
Differentiate draft vs final artifacts.

Avoid

Choosing opacity too high and reducing readability.
Using very long watermark text that gets clipped.
Applying watermark without final visual QA on mobile view.

FAQ

Does watermark pdf upload files to a server?

No. Watermark PDF keeps the lightweight PDF workflow in your browser by default, so files are not sent to Calctrove servers for routine edits. For Watermark PDF, verify your workplace policy before handling sensitive documents.

Can I process confidential documents here?

For Watermark PDF, use caution on shared devices and verify your organization policy before handling sensitive files.

Why can watermark pdf change output size?

For Watermark PDF, output size depends on the PDF structure, embedded fonts, image compression, and the mode options selected before export.