Stamp a Text Watermark Across Every Page of a PDF
Sharing a document and worrying that someone will reuse it without permission? A text watermark such as DRAFT or CONFIDENTIAL makes the document's status obvious on every page, which discourages casual redistribution and keeps review copies clearly labeled. This tool stamps a text watermark onto each page of an uploaded PDF, with adjustable opacity and size and a diagonal placement option that makes the mark hard to crop out. Unlike desktop editors that bury watermark controls in menus, this tool runs entirely in the browser: you upload, adjust, and download in one pass with nothing to install.
Watermarks are especially common in professional workflows where documents change hands before they are final. A publisher stamps PROOF on files sent to reviewers, a design agency marks client previews with its name, and finance teams label internal drafts NOT FOR DISTRIBUTION. In every case the goal is the same: make the document's status visible at a glance without ruining readability. Because the tool renders the text as page content, the result is a normal PDF that opens in any viewer, prints correctly, and keeps working with other tools such as merge or compress.
How to Watermark a PDF
- Open the PDF Watermark tool and upload the PDF you want to mark.
- Type the watermark text, for example
CONFIDENTIALorFOR REVIEW ONLY. - Set the font size and opacity using the sliders; lower opacity keeps content readable underneath.
- Choose placement: diagonal across the page, or a centered or tiled layout.
- Preview the result on a sample page to confirm the mark is visible but not distracting.
- Download the watermarked PDF and check that every page received the stamp.
Real Example: Input and Output
A legal team sharing a settlement draft with opposing counsel marks it DRAFT v2 at 40 percent opacity, diagonal placement, so the text stays readable while the status is unmistakable.
| Input | Output |
|---|---|
watermark: "DRAFT v2", opacity 40%, diagonal | Every page carries a faint diagonal DRAFT v2 stamp |
watermark: "CONFIDENTIAL", opacity 80%, centered | Bold centered mark on each page, content still legible behind it |
Tips for Best Results
- Match opacity to purpose — use 25–40 percent for review drafts, 70 percent or more for strict confidentiality.
- Use diagonal placement for large text — a tilted mark covers more of the page and resists being cropped.
- Keep the text short — long phrases wrap awkwardly;
DRAFT,COPY, orCONFIDENTIALwork best. - Preview before downloading — confirm the mark does not cover body text or page numbers.
When to Use This Tool
- Review cycles — stamp
DRAFTso recipients know the version is not final. - Client deliverables — add your agency or firm name as a light background mark.
- Internal distribution — label budgets, contracts, or plans
CONFIDENTIALbefore sending.
Frequently Asked Questions
Does the watermark tool support images, or only text?
This tool stamps text only. The text is rendered as vector content on each page, so it stays sharp at any zoom level.
Can I remove a watermark added by this tool later?
Watermarks are burned into the page content, so there is no clean way to strip them. Add them only when you are ready to distribute.
Will the watermark cover my page numbers?
Only if they overlap. Keep opacity low or choose diagonal placement, which tends to avoid the top and bottom margins where page numbers live.
What is the difference between opacity and size?
Size controls how large the text renders; opacity controls how transparent it is. A small mark at high opacity is bold, while a large mark at low opacity is subtle.
Are my files uploaded to a server?
No. All processing happens locally in your browser, and the original file never leaves your device.
Does the tool handle multi-page documents?
Yes, the watermark is applied to every page of the uploaded PDF automatically.
Can I watermark only specific pages?
No, the current version stamps all pages. For selective changes, split the PDF first, watermark the part you need, and merge it back.
What is the best watermark for scanned documents?
Use a higher opacity and diagonal placement, because scanned pages have uneven backgrounds and a light mark can disappear into them.